Datasets:

siddharthmb
/

2026.mechaptcha.linear-probe-experiments-giant-20260525

experiment stringclasses 13 values	target_distortion stringclasses 12 values	control_type stringclasses 3 values	id int32 0 100k	text stringlengths 5 5	font stringclasses 20 values	split stringclasses 1 value	a_blur bool 2 classes	a_bold bool 2 classes	a_dots bool 2 classes	a_easy_line bool 2 classes	a_hard_line bool 2 classes	a_italic bool 2 classes	a_rotation bool 2 classes	a_salt_pepper bool 2 classes	a_two_lines bool 2 classes	a_wave bool 2 classes	a_wavy_line bool 2 classes	a_char_jitter bool 2 classes	a_spacing_jitter bool 2 classes	b_blur bool 2 classes	b_bold bool 2 classes	b_dots bool 2 classes	b_easy_line bool 2 classes	b_hard_line bool 2 classes	b_italic bool 2 classes	b_rotation bool 2 classes	b_salt_pepper bool 2 classes	b_two_lines bool 2 classes	b_wave bool 2 classes	b_wavy_line bool 2 classes	b_char_jitter bool 2 classes	b_spacing_jitter bool 2 classes
blur	blur	controlled_distortion	0	uyait	quicksand	train	true	false	true	false	false	true	false	true	false	true	false	true	false	false	false	true	false	false	true	false	true	false	true	false	true	false
blur	blur	controlled_distortion	1	asvev	pt_mono	train	true	true	true	false	false	true	false	true	true	true	false	false	true	false	true	true	false	false	true	false	true	true	true	false	false	true
blur	blur	controlled_distortion	2	gymds	nunito	train	true	false	false	false	false	false	false	true	false	false	false	true	true	false	false	false	false	false	false	false	true	false	false	false	true	true
blur	blur	controlled_distortion	3	qodjg	roboto_mono	train	true	false	false	false	false	false	false	true	false	true	false	true	false	false	false	false	false	false	false	false	true	false	true	false	true	false
blur	blur	controlled_distortion	4	gxsgf	ubuntu	train	true	false	false	false	false	false	true	false	false	false	false	false	false	false	false	false	false	false	false	true	false	false	false	false	false	false
blur	blur	controlled_distortion	5	fkztr	arvo	train	true	true	true	false	true	true	true	true	false	true	false	true	true	false	true	true	false	true	true	true	true	false	true	false	true	true
blur	blur	controlled_distortion	6	evufm	roboto_mono	train	true	true	true	false	false	true	true	false	false	false	true	false	true	false	true	true	false	false	true	true	false	false	false	true	false	true
blur	blur	controlled_distortion	7	hufbv	playfair_display	train	true	true	false	false	false	true	false	true	false	false	false	false	true	false	true	false	false	false	true	false	true	false	false	false	false	true
blur	blur	controlled_distortion	10	nzuiv	quicksand	train	true	false	true	true	false	true	false	true	false	true	false	false	true	false	false	true	true	false	true	false	true	false	true	false	false	true
blur	blur	controlled_distortion	11	sxsvo	pt_serif	train	true	false	true	false	false	true	false	true	false	false	false	false	false	false	false	true	false	false	true	false	true	false	false	false	false	false
blur	blur	controlled_distortion	12	kssnf	noto_sans	train	true	false	false	false	false	false	true	false	true	true	false	false	false	false	false	false	false	false	false	true	false	true	true	false	false	false
blur	blur	controlled_distortion	13	brrjt	lato	train	true	true	true	false	false	false	false	true	false	true	false	true	true	false	true	true	false	false	false	false	true	false	true	false	true	true
blur	blur	controlled_distortion	14	ztlwh	libre_baskerville	train	true	true	true	false	false	true	true	false	false	true	false	false	true	false	true	true	false	false	true	true	false	false	true	false	false	true
blur	blur	controlled_distortion	15	wkjrg	open_sans	train	true	true	true	false	true	true	false	false	false	true	false	false	false	false	true	true	false	true	true	false	false	false	true	false	false	false
blur	blur	controlled_distortion	16	yxjgv	pt_serif	train	true	true	true	false	false	false	true	false	false	true	false	false	false	false	true	true	false	false	false	true	false	false	true	false	false	false
blur	blur	controlled_distortion	17	xswox	cabin	train	true	true	false	true	false	true	false	false	false	false	false	true	true	false	true	false	true	false	true	false	false	false	false	false	true	true
blur	blur	controlled_distortion	20	tdpfm	ubuntu	train	true	false	true	true	false	true	false	false	false	false	false	false	false	false	false	true	true	false	true	false	false	false	false	false	false	false
blur	blur	controlled_distortion	21	ubidp	inconsolata	train	true	false	false	false	false	false	false	true	false	false	false	true	false	false	false	false	false	false	false	false	true	false	false	false	true	false
blur	blur	controlled_distortion	22	faqaa	nunito	train	true	true	true	false	false	false	true	false	false	false	false	false	false	false	true	true	false	false	false	true	false	false	false	false	false	false
blur	blur	controlled_distortion	23	ggqpc	arvo	train	true	true	true	false	false	false	false	true	false	false	false	true	true	false	true	true	false	false	false	false	true	false	false	false	true	true
blur	blur	controlled_distortion	24	egyfm	roboto	train	true	true	true	true	false	true	true	false	false	false	false	false	false	false	true	true	true	false	true	true	false	false	false	false	false	false
blur	blur	controlled_distortion	25	fwcvj	lato	train	true	false	false	false	false	true	false	false	false	true	false	false	false	false	false	false	false	false	true	false	false	false	true	false	false	false
blur	blur	controlled_distortion	26	djgda	pt_serif	train	true	true	true	false	false	true	false	true	false	false	false	false	false	false	true	true	false	false	true	false	true	false	false	false	false	false
blur	blur	controlled_distortion	27	qiutw	inconsolata	train	true	false	false	false	false	false	true	false	true	true	false	false	false	false	false	false	false	false	false	true	false	true	true	false	false	false
blur	blur	controlled_distortion	30	gfbav	nunito	train	true	false	true	false	false	true	true	true	false	true	false	false	true	false	false	true	false	false	true	true	true	false	true	false	false	true
blur	blur	controlled_distortion	31	uimfy	pt_serif	train	true	true	false	false	false	true	true	false	false	true	false	false	true	false	true	false	false	false	true	true	false	false	true	false	false	true
blur	blur	controlled_distortion	32	sgoqv	playfair_display	train	true	true	false	false	false	false	true	true	true	true	false	false	true	false	true	false	false	false	false	true	true	true	true	false	false	true
blur	blur	controlled_distortion	33	ezqdx	source_code_pro	train	true	true	true	false	false	true	true	true	false	true	false	false	true	false	true	true	false	false	true	true	true	false	true	false	false	true
blur	blur	controlled_distortion	34	cqvjv	ubuntu	train	true	false	false	false	false	true	false	true	false	true	false	false	false	false	false	false	false	false	true	false	true	false	true	false	false	false
blur	blur	controlled_distortion	35	eqoun	lato	train	true	true	true	false	true	false	false	false	false	true	false	true	false	false	true	true	false	true	false	false	false	false	true	false	true	false
blur	blur	controlled_distortion	36	dgdjc	merriweather	train	true	false	false	false	true	true	false	true	false	true	false	false	true	false	false	false	false	true	true	false	true	false	true	false	false	true
blur	blur	controlled_distortion	37	iwzmo	noto_sans	train	true	true	true	false	false	false	true	false	false	true	false	true	false	false	true	true	false	false	false	true	false	false	true	false	true	false
blur	blur	controlled_distortion	40	pjzqn	playfair_display	train	true	false	true	false	false	false	false	true	false	true	true	true	false	false	false	true	false	false	false	false	true	false	true	true	true	false
blur	blur	controlled_distortion	41	fbmtc	source_code_pro	train	true	false	true	false	false	false	true	true	false	false	true	false	true	false	false	true	false	false	false	true	true	false	false	true	false	true
blur	blur	controlled_distortion	42	mxpxf	roboto_mono	train	true	true	true	false	false	true	false	false	false	false	false	true	true	false	true	true	false	false	true	false	false	false	false	false	true	true
blur	blur	controlled_distortion	43	ktgzu	quicksand	train	true	false	true	false	false	true	true	true	false	false	true	true	true	false	false	true	false	false	true	true	true	false	false	true	true	true
blur	blur	controlled_distortion	44	kpnfc	ubuntu	train	true	false	false	false	true	false	false	false	false	false	false	true	true	false	false	false	false	true	false	false	false	false	false	false	true	true
blur	blur	controlled_distortion	45	nvrli	raleway	train	true	false	false	false	false	false	false	true	false	true	true	false	false	false	false	false	false	false	false	false	true	false	true	true	false	false
blur	blur	controlled_distortion	46	ljiwm	oswald	train	true	false	false	false	true	false	false	true	false	false	false	true	false	false	false	false	false	true	false	false	true	false	false	false	true	false
blur	blur	controlled_distortion	47	pjusa	merriweather	train	true	true	false	false	false	false	false	true	true	false	false	false	true	false	true	false	false	false	false	false	true	true	false	false	false	true
blur	blur	controlled_distortion	50	znkhn	roboto_mono	train	true	true	false	false	false	true	false	false	false	true	false	false	false	false	true	false	false	false	true	false	false	false	true	false	false	false
blur	blur	controlled_distortion	51	cpvph	libre_baskerville	train	true	false	true	false	false	false	true	false	false	false	false	false	false	false	false	true	false	false	false	true	false	false	false	false	false	false
blur	blur	controlled_distortion	52	meopc	oswald	train	true	false	true	false	true	false	false	true	false	true	false	false	true	false	false	true	false	true	false	false	true	false	true	false	false	true
blur	blur	controlled_distortion	53	goumv	playfair_display	train	true	true	false	false	false	true	true	true	false	true	false	true	true	false	true	false	false	false	true	true	true	false	true	false	true	true
blur	blur	controlled_distortion	54	dbgpa	inconsolata	train	true	true	true	false	true	false	true	false	false	true	false	true	true	false	true	true	false	true	false	true	false	false	true	false	true	true
blur	blur	controlled_distortion	55	rxnaq	lato	train	true	true	false	false	false	true	true	true	false	false	true	true	false	false	true	false	false	false	true	true	true	false	false	true	true	false
blur	blur	controlled_distortion	56	gynkh	source_code_pro	train	true	true	true	false	false	true	true	true	false	true	false	false	true	false	true	true	false	false	true	true	true	false	true	false	false	true
blur	blur	controlled_distortion	57	maykc	oswald	train	true	false	false	false	false	true	true	false	true	true	false	false	true	false	false	false	false	false	true	true	false	true	true	false	false	true
blur	blur	controlled_distortion	60	tctiv	roboto_mono	train	true	false	true	false	true	true	false	true	false	true	false	true	false	false	false	true	false	true	true	false	true	false	true	false	true	false
blur	blur	controlled_distortion	61	bawdk	roboto_mono	train	true	true	false	false	false	false	false	false	false	false	false	false	true	false	true	false	false	false	false	false	false	false	false	false	false	true
blur	blur	controlled_distortion	62	ecmfk	ubuntu	train	true	true	false	false	true	false	true	false	false	true	false	false	true	false	true	false	false	true	false	true	false	false	true	false	false	true
blur	blur	controlled_distortion	63	mhjwm	merriweather	train	true	true	true	false	false	true	true	false	false	false	false	true	false	false	true	true	false	false	true	true	false	false	false	false	true	false
blur	blur	controlled_distortion	64	hsxqv	cabin	train	true	false	true	false	false	false	false	false	false	true	true	true	false	false	false	true	false	false	false	false	false	false	true	true	true	false
blur	blur	controlled_distortion	65	jyrhp	merriweather	train	true	false	true	false	true	false	true	true	false	false	false	true	true	false	false	true	false	true	false	true	true	false	false	false	true	true
blur	blur	controlled_distortion	66	rbdvm	playfair_display	train	true	true	false	false	false	false	false	false	false	true	false	true	false	false	true	false	false	false	false	false	false	false	true	false	true	false
blur	blur	controlled_distortion	67	ltrew	cabin	train	true	false	false	false	false	true	true	false	false	true	false	true	true	false	false	false	false	false	true	true	false	false	true	false	true	true
blur	blur	controlled_distortion	70	vdikz	oswald	train	true	false	false	false	false	true	false	true	false	false	false	false	false	false	false	false	false	false	true	false	true	false	false	false	false	false
blur	blur	controlled_distortion	71	suyqn	raleway	train	true	false	true	false	true	false	true	true	false	true	false	true	true	false	false	true	false	true	false	true	true	false	true	false	true	true
blur	blur	controlled_distortion	72	hlimp	raleway	train	true	true	true	false	false	false	true	true	false	true	false	false	true	false	true	true	false	false	false	true	true	false	true	false	false	true
blur	blur	controlled_distortion	73	pcpoi	nunito	train	true	false	true	false	false	true	false	true	false	true	false	true	false	false	false	true	false	false	true	false	true	false	true	false	true	false
blur	blur	controlled_distortion	74	lvmcu	libre_baskerville	train	true	false	true	false	false	true	true	false	false	false	false	false	true	false	false	true	false	false	true	true	false	false	false	false	false	true
blur	blur	controlled_distortion	75	qjzml	libre_baskerville	train	true	true	false	false	false	false	true	false	true	true	false	true	false	false	true	false	false	false	false	true	false	true	true	false	true	false
blur	blur	controlled_distortion	76	wervw	pt_serif	train	true	true	false	false	true	false	true	false	false	false	false	true	false	false	true	false	false	true	false	true	false	false	false	false	true	false
blur	blur	controlled_distortion	77	gadgw	roboto	train	true	true	false	false	false	true	false	false	false	false	false	false	false	false	true	false	false	false	true	false	false	false	false	false	false	false
blur	blur	controlled_distortion	80	xtzmi	inconsolata	train	true	true	false	false	true	true	true	true	false	false	false	true	false	false	true	false	false	true	true	true	true	false	false	false	true	false
blur	blur	controlled_distortion	81	naxgi	pt_serif	train	true	true	true	false	false	false	true	false	false	true	false	true	false	false	true	true	false	false	false	true	false	false	true	false	true	false
blur	blur	controlled_distortion	82	bmqzu	roboto	train	true	false	false	false	false	true	false	true	false	false	false	true	true	false	false	false	false	false	true	false	true	false	false	false	true	true
blur	blur	controlled_distortion	83	gkwdb	quicksand	train	true	false	false	false	false	true	false	false	true	false	false	true	false	false	false	false	false	false	true	false	false	true	false	false	true	false
blur	blur	controlled_distortion	84	yoqns	oswald	train	true	false	true	true	false	true	false	false	false	false	false	false	false	false	false	true	true	false	true	false	false	false	false	false	false	false
blur	blur	controlled_distortion	85	uqevh	playfair_display	train	true	true	false	false	false	true	false	true	false	false	false	true	true	false	true	false	false	false	true	false	true	false	false	false	true	true
blur	blur	controlled_distortion	86	vkyrd	noto_sans	train	true	true	true	false	true	false	true	false	false	false	false	false	true	false	true	true	false	true	false	true	false	false	false	false	false	true
blur	blur	controlled_distortion	87	pahtr	pt_serif	train	true	false	false	false	false	true	false	false	false	true	false	true	true	false	false	false	false	false	true	false	false	false	true	false	true	true
blur	blur	controlled_distortion	90	itojx	libre_baskerville	train	true	false	true	false	false	false	false	false	false	true	false	true	false	false	false	true	false	false	false	false	false	false	true	false	true	false
blur	blur	controlled_distortion	91	yvobu	oswald	train	true	true	false	false	false	false	false	true	true	true	false	false	true	false	true	false	false	false	false	false	true	true	true	false	false	true
blur	blur	controlled_distortion	92	zlaro	inconsolata	train	true	true	false	false	false	false	true	false	false	false	true	true	false	false	true	false	false	false	false	true	false	false	false	true	true	false
blur	blur	controlled_distortion	93	ssopd	ubuntu	train	true	true	false	false	false	true	false	false	false	true	false	true	false	false	true	false	false	false	true	false	false	false	true	false	true	false
blur	blur	controlled_distortion	94	zunds	libre_baskerville	train	true	true	false	true	false	true	false	false	false	true	false	true	false	false	true	false	true	false	true	false	false	false	true	false	true	false
blur	blur	controlled_distortion	95	lymyq	roboto	train	true	true	false	false	false	true	false	true	true	true	false	true	false	false	true	false	false	false	true	false	true	true	true	false	true	false
blur	blur	controlled_distortion	96	kxxpa	open_sans	train	true	false	true	true	false	false	false	true	false	false	false	true	false	false	false	true	true	false	false	false	true	false	false	false	true	false
blur	blur	controlled_distortion	97	czjam	source_code_pro	train	true	false	true	false	false	true	false	false	false	false	false	true	true	false	false	true	false	false	true	false	false	false	false	false	true	true
blur	blur	controlled_distortion	100	weeyo	ubuntu	train	true	false	true	false	false	false	false	false	false	true	false	true	true	false	false	true	false	false	false	false	false	false	true	false	true	true
blur	blur	controlled_distortion	101	lfcay	courier_prime	train	true	true	false	false	false	false	true	true	false	false	true	false	true	false	true	false	false	false	false	true	true	false	false	true	false	true
blur	blur	controlled_distortion	102	glhnl	arvo	train	true	false	true	false	false	true	true	true	false	false	false	false	true	false	false	true	false	false	true	true	true	false	false	false	false	true
blur	blur	controlled_distortion	103	jkcey	open_sans	train	true	true	false	false	false	true	true	true	false	false	false	false	false	false	true	false	false	false	true	true	true	false	false	false	false	false
blur	blur	controlled_distortion	104	iyxca	raleway	train	true	false	false	false	false	true	true	false	false	true	false	true	false	false	false	false	false	false	true	true	false	false	true	false	true	false
blur	blur	controlled_distortion	105	gltpb	open_sans	train	true	true	true	false	false	false	true	true	false	true	false	false	true	false	true	true	false	false	false	true	true	false	true	false	false	true
blur	blur	controlled_distortion	106	ucsad	merriweather	train	true	false	false	false	false	false	false	false	false	false	false	true	false	false	false	false	false	false	false	false	false	false	false	false	true	false
blur	blur	controlled_distortion	107	ckhqt	inconsolata	train	true	true	false	false	false	false	true	true	false	false	false	false	true	false	true	false	false	false	false	true	true	false	false	false	false	true
blur	blur	controlled_distortion	110	fyhvt	nunito	train	true	true	false	true	false	true	false	true	false	false	false	true	true	false	true	false	true	false	true	false	true	false	false	false	true	true
blur	blur	controlled_distortion	111	wfrap	noto_sans	train	true	false	true	false	false	true	true	false	true	true	false	true	false	false	false	true	false	false	true	true	false	true	true	false	true	false
blur	blur	controlled_distortion	112	ldvdi	pt_serif	train	true	true	true	true	false	false	false	true	false	true	false	true	true	false	true	true	true	false	false	false	true	false	true	false	true	true
blur	blur	controlled_distortion	113	dythf	lato	train	true	false	false	false	false	false	true	false	false	false	false	true	false	false	false	false	false	false	false	true	false	false	false	false	true	false
blur	blur	controlled_distortion	114	xvvze	pt_mono	train	true	true	false	false	false	false	false	true	false	false	false	false	false	false	true	false	false	false	false	false	true	false	false	false	false	false
blur	blur	controlled_distortion	115	lixrh	libre_baskerville	train	true	true	true	false	false	false	false	true	false	false	false	false	true	false	true	true	false	false	false	false	true	false	false	false	false	true
blur	blur	controlled_distortion	116	ytyer	inconsolata	train	true	false	false	false	false	false	false	false	false	true	true	false	true	false	false	false	false	false	false	false	false	false	true	true	false	true
blur	blur	controlled_distortion	117	nxsfw	nunito	train	true	false	true	false	false	false	true	true	false	false	false	false	false	false	false	true	false	false	false	true	true	false	false	false	false	false
blur	blur	controlled_distortion	120	oodsi	oswald	train	true	false	false	true	false	false	false	true	false	true	false	false	false	false	false	false	true	false	false	false	true	false	true	false	false	false
blur	blur	controlled_distortion	121	ouvgt	playfair_display	train	true	true	true	false	false	false	true	false	false	true	false	false	true	false	true	true	false	false	false	true	false	false	true	false	false	true
blur	blur	controlled_distortion	122	jvigo	courier_prime	train	true	true	false	false	false	true	true	false	false	false	false	false	false	false	true	false	false	false	true	true	false	false	false	false	false	false
blur	blur	controlled_distortion	123	yfatl	libre_baskerville	train	true	false	true	false	true	false	true	true	false	true	false	true	true	false	false	true	false	true	false	true	true	false	true	false	true	true

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siddharthmb/2026.mechaptcha.linear-probe-experiments-giant-20260525

Paired CAPTCHA image experiments for linear probes over a trained Mechaptcha CNN. Each example contains a matched image_a and image_b pair generated from the same seed pool.

Intended Use

This dataset is designed for linear probe experiments that compare activations from Batch A against Batch B. Use label 1 for image_a and label 0 for image_b.

Recommended checkpoint:

siddharthmb/2026.mechaptcha.full-accuracy-target-90p-val-distortion-stats-20260525

Example command:

uv run python -m probe.run \
    --checkpoint siddharthmb/2026.mechaptcha.full-accuracy-target-90p-val-distortion-stats-20260525 \
    --experiments siddharthmb/2026.mechaptcha.linear-probe-experiments-giant-20260525 \
    --activations probe_results/activations \
    --output probe

Dataset Structure

Columns:

experiment: experiment name, such as easy_line, blur, or dumb_control.
target_distortion: distortion being isolated for controlled experiments; empty for controls.
control_type: controlled_distortion, dumb_control, or variation_control.
id, text, font, split: seed metadata shared by the pair.
image_a, image_b: paired CAPTCHA images.
a_*, b_*: boolean distortion flags used for each batch.

Splits

Split	Rows
`train`	1,040,000
`val`	130,000
`test`	130,000

Experiments

Experiment	Rows
`blur`	100,000
`bold`	100,000
`dots`	100,000
`dumb_control`	100,000
`easy_line`	100,000
`hard_line`	100,000
`italic`	100,000
`rotation`	100,000
`salt_pepper`	100,000
`two_lines`	100,000
`variation_control`	100,000
`wave`	100,000
`wavy_line`	100,000

Generated controlled distortions:

easy_line, hard_line, wavy_line, two_lines, dots, wave, blur, salt_pepper, rotation, italic, bold

Control experiments:

dumb_control: Batch A and Batch B are identical images.
variation_control: Batch A and Batch B are independent samples from the same distribution.

Provenance

Source directory at upload time: data/experiments/siddharthmb/2026.mechaptcha.linear-probe-experiments-giant-20260525
Seed pairs per experiment requested: 100000
Generated at: 2026-05-26T00:58:37.644049+00:00

Additional machine-readable metadata is in experiment_metadata.json.

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