character stringlengths 1 1 | grade int64 1 9 |
|---|---|
一 | 1 |
七 | 1 |
三 | 1 |
上 | 1 |
下 | 1 |
中 | 1 |
九 | 1 |
二 | 1 |
五 | 1 |
人 | 1 |
休 | 1 |
先 | 1 |
入 | 1 |
八 | 1 |
六 | 1 |
円 | 1 |
出 | 1 |
力 | 1 |
十 | 1 |
千 | 1 |
口 | 1 |
右 | 1 |
名 | 1 |
四 | 1 |
土 | 1 |
夕 | 1 |
大 | 1 |
天 | 1 |
女 | 1 |
子 | 1 |
字 | 1 |
学 | 1 |
小 | 1 |
山 | 1 |
川 | 1 |
左 | 1 |
年 | 1 |
手 | 1 |
文 | 1 |
日 | 1 |
早 | 1 |
月 | 1 |
木 | 1 |
本 | 1 |
村 | 1 |
林 | 1 |
校 | 1 |
森 | 1 |
正 | 1 |
気 | 1 |
水 | 1 |
火 | 1 |
犬 | 1 |
玉 | 1 |
王 | 1 |
生 | 1 |
田 | 1 |
男 | 1 |
町 | 1 |
白 | 1 |
百 | 1 |
目 | 1 |
石 | 1 |
空 | 1 |
立 | 1 |
竹 | 1 |
糸 | 1 |
耳 | 1 |
花 | 1 |
草 | 1 |
虫 | 1 |
見 | 1 |
貝 | 1 |
赤 | 1 |
足 | 1 |
車 | 1 |
金 | 1 |
雨 | 1 |
青 | 1 |
音 | 1 |
万 | 2 |
丸 | 2 |
交 | 2 |
京 | 2 |
今 | 2 |
会 | 2 |
体 | 2 |
何 | 2 |
作 | 2 |
元 | 2 |
兄 | 2 |
光 | 2 |
公 | 2 |
内 | 2 |
冬 | 2 |
刀 | 2 |
分 | 2 |
切 | 2 |
前 | 2 |
北 | 2 |
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Japanese Character Difficulty Dataset
A comprehensive dataset of 3,003 Japanese kanji characters with their educational difficulty grades, sourced from official Japanese educational standards and kanjiapi.dev.
Dataset Overview
- Total Characters: 3,003 kanji
- Source: Japanese Ministry of Education (MEXT) Joyo Kanji list + kanjiapi.dev
- Coverage: Elementary grades 1-6, plus secondary education and advanced characters
- Format: Character-grade pairs for easy lookup and analysis
Grade System
The dataset uses the Japanese educational grade system:
- Grades 1-6: Elementary school kanji (Joyo Kanji for primary education)
- Grade 8: Secondary school kanji (middle/high school level)
- Grade 9: Advanced kanji (beyond standard education, JLPT levels, Jinmeiyō kanji)
Grade Distribution
| Grade | Count | Description |
|---|---|---|
| 1 | 80 | First grade elementary |
| 2 | 160 | Second grade elementary |
| 3 | 200 | Third grade elementary |
| 4 | 200 | Fourth grade elementary |
| 5 | 185 | Fifth grade elementary |
| 6 | 181 | Sixth grade elementary |
| 8 | 1,134 | Secondary school level |
| 9 | 863 | Advanced/specialized characters |
Usage Examples
from datasets import load_dataset
# Load the dataset
dataset = load_dataset("ronantakizawa/japanese-character-difficulty")
df = dataset['train'].to_pandas()
# Find elementary school kanji (grades 1-6)
elementary_kanji = df[df['grade'] <= 6]
print(f"Elementary kanji count: {len(elementary_kanji)}")
# Get all grade 1 kanji
grade1_kanji = df[df['grade'] == 1]['character'].tolist()
print(f"Grade 1 kanji: {''.join(grade1_kanji)}")
# Check difficulty of a specific character
char_grade = df[df['character'] == '漢']['grade'].iloc[0]
print(f"漢 is grade {char_grade}")
Applications
- Language Learning: Curriculum design and progression planning
- Text Analysis: Automatic difficulty assessment of Japanese texts
- Educational Tools: Kanji learning applications and games
- Research: Japanese language complexity studies
Data Quality
- Sourced from official Japanese educational standards
- Cross-referenced with kanjiapi.dev comprehensive database
- Includes both Joyo (常用) and Jinmeiyō (人名用) kanji
- Covers JLPT levels N5-N1 characters
Related Datasets
- Japanese Text Difficulty Dataset - Full text analysis using this character data
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