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Upload fine-tuned Chronos-2 model with model card and initial metrics

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README.md ADDED
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+ ---
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+ license: apache-2.0
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+ tags:
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+ - time-series-forecasting
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+ - solar-energy
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+ - chronos
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+ - autogluon
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+ - lora
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+ - australia
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+ library_name: autogluon
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+ base_model: amazon/chronos-2
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+ datasets:
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+ - codenhenhe/volta-solar-daily-v1
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+ ---
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+
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+ # Chronos-2 Fine-tuned for Australian Solar Generation Forecasting
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+
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+ This repository contains a fine-tuned Chronos-2 model for daily solar generation forecasting in Australia. The model was fine-tuned using AutoGluon TimeSeriesPredictor and saved as an AutoGluon predictor directory.
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+
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+ ## Model Details
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+
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+ - Base model: `amazon/chronos-2`
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+ - Framework: AutoGluon TimeSeriesPredictor
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+ - Fine-tuning method: LoRA
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+ - Forecasting task: Daily solar generation forecasting
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+ - Prediction length: 365 days
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+ - Context length: 730 days
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+ - Target variable: Daily solar generation
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+ - Evaluation metric during training: MSE
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+
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+ ## Input Features
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+
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+ The model uses historical solar generation together with temporal and weather-related covariates.
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+
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+ Known covariates include:
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+
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+ - `day_of_year`
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+ - `month`
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+ - `ALLSKY_SFC_SW_DWN`
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+ - `T2M`
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+ - `WS2M`
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+ - `RH2M`
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+
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+ ## Initial Metrics
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+
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+ The following metrics were obtained from the initial evaluation after fine-tuning. The model was evaluated on the 2024 and 2025 test periods.
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+
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+ ### Point Forecast Accuracy
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+
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+ | Model | Period | MAE | MSE | RMSE | sMAPE (%) | R2 |
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+ |---|---:|---:|---:|---:|---:|---:|
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+ | Chronos Fine-Tuned | 2024 | 2.374061 | 11.042445 | 3.323017 | 10.768443 | 0.889873 |
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+ | Chronos Fine-Tuned | 2025 | 2.468275 | 12.076611 | 3.475142 | 11.053124 | 0.883387 |
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+ | Chronos Fine-Tuned | Overall | 2.421168 | 11.559528 | 3.399931 | 10.910783 | 0.886614 |
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+
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+ ### Probabilistic Metrics
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+
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+ | Model | Period | Q_0.1 | Q_0.9 | Avg_Q_Loss |
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+ |---|---:|---:|---:|---:|
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+ | Chronos Fine-Tuned | 2024 | 0.601763 | 0.500016 | 0.550889 |
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+ | Chronos Fine-Tuned | 2025 | 0.635956 | 0.506356 | 0.571156 |
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+ | Chronos Fine-Tuned | Overall | 0.618859 | 0.503186 | 0.561023 |
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+
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+ ## Baseline Comparison
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+
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+ The fine-tuned model was also compared against a seasonal naive baseline.
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+
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+ | Model | MAE | RMSE | MAPE (%) | R2 |
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+ |---|---:|---:|---:|---:|
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+ | Chronos2-Volta AI | 2.600748 | 3.640213 | 12.897249 | 0.870021 |
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+ | Seasonal Naive Baseline | 6.080324 | 8.468857 | 29.693408 | 0.296490 |
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+
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+ ## Loading the Model
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+
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+ This model is stored as an AutoGluon TimeSeriesPredictor directory. After downloading the repository, it can be loaded as follows:
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+
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+ ```python
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+ from autogluon.timeseries import TimeSeriesPredictor
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+
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+ predictor = TimeSeriesPredictor.load("path_to_downloaded_model")
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+ ```
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+
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+ ## Intended Use
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+
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+ This model is intended for postcode-based daily solar generation forecasting in Australia. It can be used as part of a pipeline that maps a user postcode to a representative solar reference point, retrieves or simulates weather covariates, and forecasts future solar generation.
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+
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+ ## Limitations
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+
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+ The model depends on the quality of postcode mapping, weather covariates, and historical solar generation data. Forecast accuracy may vary across regions, seasons, and unusual weather conditions.
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logs/predictor_log.txt ADDED
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+ Beginning AutoGluon training... Time limit = 3600s
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+ AutoGluon will save models to '/content/drive/MyDrive/TT/finetuned_model/chronos_2/weather_vars_6_1e_6_300_8'
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+ =================== System Info ===================
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+ AutoGluon Version: 1.5.0
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+ Python Version: 3.12.13
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+ Operating System: Linux
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+ Platform Machine: x86_64
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+ Platform Version: #1 SMP Thu Apr 30 18:17:14 UTC 2026
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+ CPU Count: 2
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+ Pytorch Version: 2.9.1+cu128
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+ CUDA Version: 12.8
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+ GPU Memory: GPU 0: 14.55/14.56 GB
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+ Total GPU Memory: Free: 14.55 GB, Allocated: 0.02 GB, Total: 14.56 GB
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+ GPU Count: 1
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+ Memory Avail: 8.75 GB / 12.67 GB (69.1%)
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+ Disk Space Avail: 3.38 GB / 15.00 GB (22.5%)
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+ WARNING: Available disk space is low and there is a risk that AutoGluon will run out of disk during fit, causing an exception.
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+ We recommend a minimum available disk space of 10 GB, and large datasets may require more.
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+ ===================================================
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+
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+ Fitting with arguments:
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+ {'enable_ensemble': False,
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+ 'eval_metric': MSE,
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+ 'hyperparameters': {'Chronos2': [{'ag_args': {'name_suffix': '_ZeroShot'}},
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+ {'ag_args': {'name_suffix': '_FineTuned'},
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+ 'eval_during_fine_tune': True,
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+ 'fine_tune': True,
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+ 'fine_tune_batch_size': 8,
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+ 'fine_tune_context_length': 730,
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+ 'fine_tune_lora_config': {'lora_alpha': 64,
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+ 'r': 32},
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+ 'fine_tune_lr': 1e-06,
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+ 'fine_tune_mode': 'lora',
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+ 'fine_tune_steps': 300}]},
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+ 'known_covariates_names': ['day_of_year',
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+ 'month',
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+ 'ALLSKY_SFC_SW_DWN',
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+ 'T2M',
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+ 'WS2M',
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+ 'RH2M'],
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+ 'num_val_windows': 1,
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+ 'prediction_length': 365,
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+ 'quantile_levels': [0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9],
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+ 'random_seed': 123,
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+ 'refit_every_n_windows': 1,
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+ 'refit_full': False,
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+ 'skip_model_selection': False,
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+ 'target': 'target',
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+ 'time_limit': 3600,
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+ 'verbosity': 2}
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+
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+ Inferred time series frequency: 'D'
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+ Provided train_data has 1278500 rows, 500 time series. Median time series length is 2557 (min=2557, max=2557).
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+ Tuning data is provided. Setting num_val_windows = (1,). Validation scores will be computed on a single window of tuning_data.
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+ Provided tuning_data has 1461000 rows, 500 time series. Median time series length is 2922 (min=2922, max=2922).
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+
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+ Provided data contains following columns:
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+ target: 'target'
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+ known_covariates:
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+ categorical: []
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+ continuous (float): ['day_of_year', 'month', 'ALLSKY_SFC_SW_DWN', 'T2M', 'WS2M', 'RH2M']
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+
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+ To learn how to fix incorrectly inferred types, please see documentation for TimeSeriesPredictor.fit
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+
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+ AutoGluon will gauge predictive performance using evaluation metric: 'MSE'
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+ This metric's sign has been flipped to adhere to being higher_is_better. The metric score can be multiplied by -1 to get the metric value.
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+ ===================================================
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+
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+ Starting training. Start time is 2026-05-15 07:25:02
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+ Models that will be trained: ['Chronos2_ZeroShot', 'Chronos2_FineTuned']
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+ Training timeseries model Chronos2_ZeroShot. Training for up to 1799.4s of the 3598.7s of remaining time.
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+ -11.5679 = Validation score (-MSE)
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+ 1.38 s = Training runtime
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+ 70.42 s = Validation (prediction) runtime
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+ Training timeseries model Chronos2_FineTuned. Training for up to 3526.6s of the 3526.6s of remaining time.
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+ -11.5228 = Validation score (-MSE)
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+ 144.65 s = Training runtime
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+ 75.15 s = Validation (prediction) runtime
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+ Training complete. Models trained: ['Chronos2_ZeroShot', 'Chronos2_FineTuned']
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+ Total runtime: 292.53 s
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+ Best model: Chronos2_FineTuned
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+ Best model score: -11.5228
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+ Loading predictor from path /content/drive/MyDrive/TT/finetuned_model/chronos_2/weather_vars_6_1e_6_300_8
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+ Loading predictor from path /content/drive/MyDrive/TT/finetuned_model/chronos_2/weather_vars
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+ Loading predictor from path /content/drive/MyDrive/TT/finetuned_model/chronos_2/weather_vars_6_1e_6_300_8
models/Chronos2_FineTuned/checkpoint-300/README.md ADDED
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+ ---
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+ base_model: autogluon/chronos-2
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+ library_name: peft
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+ tags:
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+ - base_model:adapter:autogluon/chronos-2
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+ - lora
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+ - transformers
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+ ---
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+
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+ # Model Card for Model ID
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+
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+ <!-- Provide a quick summary of what the model is/does. -->
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+
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+
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+
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+ ## Model Details
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+
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+ ### Model Description
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+
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+ <!-- Provide a longer summary of what this model is. -->
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+
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+
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+
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+ - **Developed by:** [More Information Needed]
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+ - **Funded by [optional]:** [More Information Needed]
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+ - **Shared by [optional]:** [More Information Needed]
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+ - **Model type:** [More Information Needed]
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+ - **Language(s) (NLP):** [More Information Needed]
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+ - **License:** [More Information Needed]
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+ - **Finetuned from model [optional]:** [More Information Needed]
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+
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+ ### Model Sources [optional]
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+
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+ <!-- Provide the basic links for the model. -->
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+
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+ - **Repository:** [More Information Needed]
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+ - **Paper [optional]:** [More Information Needed]
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+ - **Demo [optional]:** [More Information Needed]
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+
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+ ## Uses
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+
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+ <!-- Address questions around how the model is intended to be used, including the foreseeable users of the model and those affected by the model. -->
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+
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+ ### Direct Use
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+
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+ <!-- This section is for the model use without fine-tuning or plugging into a larger ecosystem/app. -->
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+
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+ [More Information Needed]
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+
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+ ### Downstream Use [optional]
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+
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+ <!-- This section is for the model use when fine-tuned for a task, or when plugged into a larger ecosystem/app -->
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+
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+ [More Information Needed]
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+
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+ ### Out-of-Scope Use
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+
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+ <!-- This section addresses misuse, malicious use, and uses that the model will not work well for. -->
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+
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+ [More Information Needed]
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+
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+ ## Bias, Risks, and Limitations
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+
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+ <!-- This section is meant to convey both technical and sociotechnical limitations. -->
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+
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+ [More Information Needed]
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+
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+ ### Recommendations
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+
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+ <!-- This section is meant to convey recommendations with respect to the bias, risk, and technical limitations. -->
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+
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+ Users (both direct and downstream) should be made aware of the risks, biases and limitations of the model. More information needed for further recommendations.
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+
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+ ## How to Get Started with the Model
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+
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+ Use the code below to get started with the model.
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+
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+ [More Information Needed]
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+
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+ ## Training Details
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+
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+ ### Training Data
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+
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+ <!-- This should link to a Dataset Card, perhaps with a short stub of information on what the training data is all about as well as documentation related to data pre-processing or additional filtering. -->
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+
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+ [More Information Needed]
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+
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+ ### Training Procedure
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+
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+ <!-- This relates heavily to the Technical Specifications. Content here should link to that section when it is relevant to the training procedure. -->
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+
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+ #### Preprocessing [optional]
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+
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+ [More Information Needed]
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+
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+
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+ #### Training Hyperparameters
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+
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+ - **Training regime:** [More Information Needed] <!--fp32, fp16 mixed precision, bf16 mixed precision, bf16 non-mixed precision, fp16 non-mixed precision, fp8 mixed precision -->
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+
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+ #### Speeds, Sizes, Times [optional]
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+
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+ <!-- This section provides information about throughput, start/end time, checkpoint size if relevant, etc. -->
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+
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+ [More Information Needed]
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+
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+ ## Evaluation
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+
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+ <!-- This section describes the evaluation protocols and provides the results. -->
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+
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+ ### Testing Data, Factors & Metrics
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+
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+ #### Testing Data
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+
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+ <!-- This should link to a Dataset Card if possible. -->
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+
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+ [More Information Needed]
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+
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+ #### Factors
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+
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+ <!-- These are the things the evaluation is disaggregating by, e.g., subpopulations or domains. -->
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+
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+ [More Information Needed]
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+
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+ #### Metrics
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+
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+ <!-- These are the evaluation metrics being used, ideally with a description of why. -->
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+
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+ [More Information Needed]
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+
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+ ### Results
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+
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+ [More Information Needed]
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+
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+ #### Summary
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+
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+
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+
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+ ## Model Examination [optional]
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+
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+ <!-- Relevant interpretability work for the model goes here -->
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+
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+ [More Information Needed]
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+
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+ ## Environmental Impact
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+
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+ <!-- Total emissions (in grams of CO2eq) and additional considerations, such as electricity usage, go here. Edit the suggested text below accordingly -->
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+
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+ Carbon emissions can be estimated using the [Machine Learning Impact calculator](https://mlco2.github.io/impact#compute) presented in [Lacoste et al. (2019)](https://arxiv.org/abs/1910.09700).
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+
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+ - **Hardware Type:** [More Information Needed]
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+ - **Hours used:** [More Information Needed]
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+ - **Cloud Provider:** [More Information Needed]
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+ - **Compute Region:** [More Information Needed]
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+ - **Carbon Emitted:** [More Information Needed]
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+
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+ ## Technical Specifications [optional]
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+
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+ ### Model Architecture and Objective
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+
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+ [More Information Needed]
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+
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+ ### Compute Infrastructure
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+
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+ [More Information Needed]
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+
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+ #### Hardware
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+
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+ [More Information Needed]
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+
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+ #### Software
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+
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+ [More Information Needed]
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+
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+ ## Citation [optional]
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+
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+ <!-- If there is a paper or blog post introducing the model, the APA and Bibtex information for that should go in this section. -->
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+
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+ **BibTeX:**
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+
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+ [More Information Needed]
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+
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+ **APA:**
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+
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+ [More Information Needed]
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+
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+ ## Glossary [optional]
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+
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+ <!-- If relevant, include terms and calculations in this section that can help readers understand the model or model card. -->
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+
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+ [More Information Needed]
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+
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+ ## More Information [optional]
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+
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+ [More Information Needed]
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+
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+ ## Model Card Authors [optional]
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+
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+ [More Information Needed]
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+
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+ ## Model Card Contact
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+
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+ [More Information Needed]
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+ ### Framework versions
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+
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+ - PEFT 0.17.1
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+ ---
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+ base_model: autogluon/chronos-2
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+ library_name: peft
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+ tags:
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+ - base_model:adapter:autogluon/chronos-2
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+ - lora
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+ - transformers
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+ ---
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+
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+ # Model Card for Model ID
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+
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+ <!-- Provide a quick summary of what the model is/does. -->
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+
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+
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+
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+ ## Model Details
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+
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+ ### Model Description
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+
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+ <!-- Provide a longer summary of what this model is. -->
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+
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+
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+
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+ - **Developed by:** [More Information Needed]
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+ - **Funded by [optional]:** [More Information Needed]
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+ - **Shared by [optional]:** [More Information Needed]
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+ - **Model type:** [More Information Needed]
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+ - **Language(s) (NLP):** [More Information Needed]
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+ - **License:** [More Information Needed]
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+ - **Finetuned from model [optional]:** [More Information Needed]
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+
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+ ### Model Sources [optional]
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+
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+ <!-- Provide the basic links for the model. -->
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+
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+ - **Repository:** [More Information Needed]
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+ - **Paper [optional]:** [More Information Needed]
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+ - **Demo [optional]:** [More Information Needed]
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+
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+ ## Uses
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+
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+ <!-- Address questions around how the model is intended to be used, including the foreseeable users of the model and those affected by the model. -->
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+
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+ ### Direct Use
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+
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+ <!-- This section is for the model use without fine-tuning or plugging into a larger ecosystem/app. -->
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+
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+ [More Information Needed]
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+
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+ ### Downstream Use [optional]
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+
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+ <!-- This section is for the model use when fine-tuned for a task, or when plugged into a larger ecosystem/app -->
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+
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+ [More Information Needed]
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+
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+ ### Out-of-Scope Use
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+
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+ <!-- This section addresses misuse, malicious use, and uses that the model will not work well for. -->
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+
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+ [More Information Needed]
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+
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+ ## Bias, Risks, and Limitations
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+
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+ <!-- This section is meant to convey both technical and sociotechnical limitations. -->
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+
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+ [More Information Needed]
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+
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+ ### Recommendations
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+
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+ <!-- This section is meant to convey recommendations with respect to the bias, risk, and technical limitations. -->
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+
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+ Users (both direct and downstream) should be made aware of the risks, biases and limitations of the model. More information needed for further recommendations.
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+
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+ ## How to Get Started with the Model
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+
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+ Use the code below to get started with the model.
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+
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+ [More Information Needed]
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+
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+ ## Training Details
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+
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+ ### Training Data
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+
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+ <!-- This should link to a Dataset Card, perhaps with a short stub of information on what the training data is all about as well as documentation related to data pre-processing or additional filtering. -->
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+
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+ [More Information Needed]
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+
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+ ### Training Procedure
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+
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+ <!-- This relates heavily to the Technical Specifications. Content here should link to that section when it is relevant to the training procedure. -->
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+
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+ #### Preprocessing [optional]
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+
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+ [More Information Needed]
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+
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+
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+ #### Training Hyperparameters
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+
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+ - **Training regime:** [More Information Needed] <!--fp32, fp16 mixed precision, bf16 mixed precision, bf16 non-mixed precision, fp16 non-mixed precision, fp8 mixed precision -->
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+
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+ #### Speeds, Sizes, Times [optional]
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+
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+ <!-- This section provides information about throughput, start/end time, checkpoint size if relevant, etc. -->
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+
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+ [More Information Needed]
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+
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+ ## Evaluation
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+
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+ <!-- This section describes the evaluation protocols and provides the results. -->
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+
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+ ### Testing Data, Factors & Metrics
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+
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+ #### Testing Data
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+
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+ <!-- This should link to a Dataset Card if possible. -->
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+
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+ [More Information Needed]
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+
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+ #### Factors
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+
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+ <!-- These are the things the evaluation is disaggregating by, e.g., subpopulations or domains. -->
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+
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+ [More Information Needed]
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+
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+ #### Metrics
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+
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+ <!-- These are the evaluation metrics being used, ideally with a description of why. -->
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+
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+ [More Information Needed]
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+
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+ ### Results
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+
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+ [More Information Needed]
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+
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+ #### Summary
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+
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+
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+
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+ ## Model Examination [optional]
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+
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+ <!-- Relevant interpretability work for the model goes here -->
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+
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+ [More Information Needed]
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+
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+ ## Environmental Impact
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+
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+ <!-- Total emissions (in grams of CO2eq) and additional considerations, such as electricity usage, go here. Edit the suggested text below accordingly -->
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+
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+ Carbon emissions can be estimated using the [Machine Learning Impact calculator](https://mlco2.github.io/impact#compute) presented in [Lacoste et al. (2019)](https://arxiv.org/abs/1910.09700).
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+
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+ - **Hardware Type:** [More Information Needed]
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+ - **Hours used:** [More Information Needed]
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+ - **Cloud Provider:** [More Information Needed]
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+ - **Compute Region:** [More Information Needed]
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+ - **Carbon Emitted:** [More Information Needed]
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+
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+ ## Technical Specifications [optional]
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+
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+ ### Model Architecture and Objective
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+
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+ [More Information Needed]
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+
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+ ### Compute Infrastructure
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+
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+ [More Information Needed]
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+
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+ #### Hardware
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+
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+ [More Information Needed]
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+
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+ #### Software
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+
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+ [More Information Needed]
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+
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+ ## Citation [optional]
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+
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+ <!-- If there is a paper or blog post introducing the model, the APA and Bibtex information for that should go in this section. -->
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+
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+ **BibTeX:**
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+
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+ [More Information Needed]
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+
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+ **APA:**
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+
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+ [More Information Needed]
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+
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+ ## Glossary [optional]
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+
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+ <!-- If relevant, include terms and calculations in this section that can help readers understand the model or model card. -->
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+
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+ [More Information Needed]
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+
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+ ## More Information [optional]
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+
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+ [More Information Needed]
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+
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+ ## Model Card Authors [optional]
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+
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+ [More Information Needed]
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+
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+ ## Model Card Contact
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+
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+ [More Information Needed]
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+ ### Framework versions
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+
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+ - PEFT 0.17.1
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+ "parent_library": "chronos.chronos2.model"
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+ }
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