| { |
| "@context": { |
| "@language": "en", |
| "@vocab": "https://schema.org/", |
| "citeAs": "cr:citeAs", |
| "column": "cr:column", |
| "conformsTo": "dct:conformsTo", |
| "cr": "http://mlcommons.org/croissant/", |
| "rai": "http://mlcommons.org/croissant/RAI/", |
| "data": {"@id": "cr:data", "@type": "@json"}, |
| "dataType": {"@id": "cr:dataType", "@type": "@vocab"}, |
| "dct": "http://purl.org/dc/terms/", |
| "examples": {"@id": "cr:examples", "@type": "@json"}, |
| "extract": "cr:extract", |
| "field": "cr:field", |
| "fileProperty": "cr:fileProperty", |
| "fileObject": "cr:fileObject", |
| "fileSet": "cr:fileSet", |
| "format": "cr:format", |
| "includes": "cr:includes", |
| "isLiveDataset": "cr:isLiveDataset", |
| "jsonPath": "cr:jsonPath", |
| "key": "cr:key", |
| "md5": "cr:md5", |
| "parentField": "cr:parentField", |
| "path": "cr:path", |
| "recordSet": "cr:recordSet", |
| "references": "cr:references", |
| "regex": "cr:regex", |
| "repeated": "cr:repeated", |
| "replace": "cr:replace", |
| "sc": "https://schema.org/", |
| "separator": "cr:separator", |
| "source": "cr:source", |
| "subField": "cr:subField", |
| "transform": "cr:transform" |
| }, |
| "@type": "sc:Dataset", |
| "name": "PolyCAT", |
| "description": "PolyCAT (Polygon-Aperture Eye-Tracking Dataset) is a public eye-tracking dataset for studying visual attention on natural images viewed through irregular polygon apertures. 30 participants viewed 600 CAT2000 images through 27 polygon shapes while their eye movements were recorded with an EyeLink 1000+ at 500 Hz binocular. The dataset includes sample-level gaze streams, fixation events, empirical saliency maps, scanpath sequences, and comprehensive metadata.", |
| "conformsTo": "http://mlcommons.org/croissant/1.0", |
| "license": "https://creativecommons.org/licenses/by/4.0/", |
| "url": "https://github.com/TBD/PolyCAT", |
| "version": "1.0.0", |
| "datePublished": "2026-03-05", |
| "keywords": [ |
| "eye tracking", |
| "saliency", |
| "visual attention", |
| "gaze prediction", |
| "fixation density", |
| "polygon aperture", |
| "CAT2000" |
| ], |
| "creator": { |
| "@type": "sc:Organization", |
| "name": "TBD" |
| }, |
| "citeAs": "TBD (2026). PolyCAT: A Polygon-Aperture Eye-Tracking Dataset. In Proceedings of ETRA 2026.", |
| "distribution": [ |
| { |
| "@type": "cr:FileObject", |
| "@id": "participants-csv", |
| "name": "participants.csv", |
| "description": "Per-participant metadata including demographics, dominant eye, trial counts, and inclusion status.", |
| "contentUrl": "data/metadata/participants.csv", |
| "encodingFormat": "text/csv", |
| "sha256": "TBD" |
| }, |
| { |
| "@type": "cr:FileObject", |
| "@id": "sessions-csv", |
| "name": "sessions.csv", |
| "description": "Per-session metadata including session labels (primary, split_primary, extra), trial counts, and inclusion flags.", |
| "contentUrl": "data/metadata/sessions.csv", |
| "encodingFormat": "text/csv", |
| "sha256": "TBD" |
| }, |
| { |
| "@type": "cr:FileObject", |
| "@id": "trials-csv", |
| "name": "trials.csv", |
| "description": "Source-of-truth trial table with one row per trial. Contains stimulus assignments, polygon definitions, cue positions, and drift-check metrics.", |
| "contentUrl": "data/metadata/trials.csv", |
| "encodingFormat": "text/csv", |
| "sha256": "TBD" |
| }, |
| { |
| "@type": "cr:FileObject", |
| "@id": "quality-metrics-csv", |
| "name": "quality_metrics.csv", |
| "description": "Per-participant quality metrics: tracking ratio, fixation statistics, calibration error, data loss.", |
| "contentUrl": "data/metadata/quality_metrics.csv", |
| "encodingFormat": "text/csv", |
| "sha256": "TBD" |
| }, |
| { |
| "@type": "cr:FileObject", |
| "@id": "fixations-all-csv", |
| "name": "fixations_all.csv", |
| "description": "All fixation events across all participants and trials. Each row is one fixation with position (pixels and degrees), duration, pupil size, and stimulus metadata.", |
| "contentUrl": "data/fixations/fixations_all.csv", |
| "encodingFormat": "text/csv", |
| "sha256": "TBD" |
| }, |
| { |
| "@type": "cr:FileObject", |
| "@id": "fixations-mat", |
| "name": "fixations.mat", |
| "description": "Fixation data in CAT2000-compatible MATLAB format with fields: x, y, dur, subj, img, polygon.", |
| "contentUrl": "data/fixations/fixations.mat", |
| "encodingFormat": "application/x-matlab-data", |
| "sha256": "TBD" |
| }, |
| { |
| "@type": "cr:FileObject", |
| "@id": "polygon-geometry-csv", |
| "name": "polygon_geometry.csv", |
| "description": "Polygon shape definitions with polygon ID, group, and JSON filename.", |
| "contentUrl": "data/manifests/polygon_geometry.csv", |
| "encodingFormat": "text/csv", |
| "sha256": "TBD" |
| }, |
| { |
| "@type": "cr:FileObject", |
| "@id": "stimulus-manifest-csv", |
| "name": "stimulus_manifest.csv", |
| "description": "Fixed stimulus-polygon-cue assignment table (702 trial slots shared by all participants).", |
| "contentUrl": "data/manifests/stimulus_manifest.csv", |
| "encodingFormat": "text/csv", |
| "sha256": "TBD" |
| }, |
| { |
| "@type": "cr:FileObject", |
| "@id": "baseline-results-csv", |
| "name": "baseline_results.csv", |
| "description": "Saliency benchmark results for baseline models (Uniform, Center Bias, Gold Standard LOO).", |
| "contentUrl": "benchmarks/baseline_results.csv", |
| "encodingFormat": "text/csv", |
| "sha256": "TBD" |
| }, |
| { |
| "@type": "cr:FileSet", |
| "@id": "gaze-tsv-files", |
| "name": "Gaze TSV files", |
| "description": "Sample-level gaze streams. One TSV file per session with timestamp, eye, gaze position, pupil size, and validity.", |
| "containedIn": {"@id": "gaze-directory"}, |
| "includes": "*.tsv", |
| "encodingFormat": "text/tab-separated-values" |
| }, |
| { |
| "@type": "cr:FileObject", |
| "@id": "gaze-directory", |
| "name": "gaze/", |
| "description": "Directory containing per-session gaze TSV files.", |
| "contentUrl": "data/gaze/", |
| "encodingFormat": "application/x-directory" |
| }, |
| { |
| "@type": "cr:FileSet", |
| "@id": "saliency-map-files", |
| "name": "Saliency map files", |
| "description": "Empirical fixation density maps per polygon-image combination. Gaussian-smoothed (sigma=1 deg) at native 3840x2160 resolution.", |
| "containedIn": {"@id": "saliency-maps-directory"}, |
| "includes": "**/*_fixmap.npy", |
| "encodingFormat": "application/octet-stream" |
| }, |
| { |
| "@type": "cr:FileObject", |
| "@id": "saliency-maps-directory", |
| "name": "saliency_maps/by_polygon/", |
| "description": "Directory containing saliency maps organized by polygon ID.", |
| "contentUrl": "data/saliency_maps/by_polygon/", |
| "encodingFormat": "application/x-directory" |
| }, |
| { |
| "@type": "cr:FileSet", |
| "@id": "scanpath-files", |
| "name": "Scanpath files", |
| "description": "Per-trial fixation sequences. One CSV per trial with fixation index, timing, position, and duration.", |
| "containedIn": {"@id": "scanpaths-directory"}, |
| "includes": "**/*.csv", |
| "encodingFormat": "text/csv" |
| }, |
| { |
| "@type": "cr:FileObject", |
| "@id": "scanpaths-directory", |
| "name": "scanpaths/", |
| "description": "Directory containing per-trial scanpath CSVs organized by participant.", |
| "contentUrl": "data/scanpaths/", |
| "encodingFormat": "application/x-directory" |
| } |
| ], |
| "recordSet": [ |
| { |
| "@type": "cr:RecordSet", |
| "@id": "participants", |
| "name": "participants", |
| "description": "One record per participant with demographics, eye dominance, trial counts, and inclusion status.", |
| "key": {"@id": "participants/participant_id"}, |
| "field": [ |
| { |
| "@type": "cr:Field", |
| "@id": "participants/participant_id", |
| "name": "participant_id", |
| "description": "Participant identifier (e.g., P01).", |
| "dataType": "sc:Text", |
| "source": { |
| "fileObject": {"@id": "participants-csv"}, |
| "extract": {"column": "participant_id"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "participants/age", |
| "name": "age", |
| "description": "Age at time of recording (years).", |
| "dataType": "sc:Integer", |
| "source": { |
| "fileObject": {"@id": "participants-csv"}, |
| "extract": {"column": "age"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "participants/gender", |
| "name": "gender", |
| "description": "Self-reported gender (Male/Female).", |
| "dataType": "sc:Text", |
| "source": { |
| "fileObject": {"@id": "participants-csv"}, |
| "extract": {"column": "gender"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "participants/dominant_eye", |
| "name": "dominant_eye", |
| "description": "Dominant eye (left/right).", |
| "dataType": "sc:Text", |
| "source": { |
| "fileObject": {"@id": "participants-csv"}, |
| "extract": {"column": "dominant_eye"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "participants/included_in_release", |
| "name": "included_in_release", |
| "description": "Whether participant is included in the released dataset.", |
| "dataType": "sc:Boolean", |
| "source": { |
| "fileObject": {"@id": "participants-csv"}, |
| "extract": {"column": "included_in_release"} |
| } |
| } |
| ] |
| }, |
| { |
| "@type": "cr:RecordSet", |
| "@id": "trials", |
| "name": "trials", |
| "description": "One record per trial across all participants. Source-of-truth trial table linking participants, stimuli, and polygon apertures.", |
| "key": {"@id": "trials/trial_uid"}, |
| "field": [ |
| { |
| "@type": "cr:Field", |
| "@id": "trials/participant_id", |
| "name": "participant_id", |
| "description": "Participant identifier.", |
| "dataType": "sc:Text", |
| "references": {"field": {"@id": "participants/participant_id"}}, |
| "source": { |
| "fileObject": {"@id": "trials-csv"}, |
| "extract": {"column": "participant_id"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "trials/trial_uid", |
| "name": "trial_uid", |
| "description": "Unique trial ID: {pid}_{part}_b{block:02d}_t{trial:02d}.", |
| "dataType": "sc:Text", |
| "source": { |
| "fileObject": {"@id": "trials-csv"}, |
| "extract": {"column": "trial_uid"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "trials/part", |
| "name": "part", |
| "description": "Experiment part (A or B).", |
| "dataType": "sc:Text", |
| "source": { |
| "fileObject": {"@id": "trials-csv"}, |
| "extract": {"column": "part"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "trials/image_id", |
| "name": "image_id", |
| "description": "CAT2000 image identifier (e.g., A_Random_169).", |
| "dataType": "sc:Text", |
| "source": { |
| "fileObject": {"@id": "trials-csv"}, |
| "extract": {"column": "image_id"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "trials/category", |
| "name": "category", |
| "description": "CAT2000 image category.", |
| "dataType": "sc:Text", |
| "source": { |
| "fileObject": {"@id": "trials-csv"}, |
| "extract": {"column": "category"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "trials/polygon_id", |
| "name": "polygon_id", |
| "description": "Polygon aperture identifier (e.g., polygon_25).", |
| "dataType": "sc:Text", |
| "source": { |
| "fileObject": {"@id": "trials-csv"}, |
| "extract": {"column": "polygon_id"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "trials/trial_type", |
| "name": "trial_type", |
| "description": "Trial type: image or empty.", |
| "dataType": "sc:Text", |
| "source": { |
| "fileObject": {"@id": "trials-csv"}, |
| "extract": {"column": "trial_type"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "trials/stimulus_duration_s", |
| "name": "stimulus_duration_s", |
| "description": "Stimulus presentation duration in seconds (4.0).", |
| "dataType": "sc:Float", |
| "source": { |
| "fileObject": {"@id": "trials-csv"}, |
| "extract": {"column": "stimulus_duration_s"} |
| } |
| } |
| ] |
| }, |
| { |
| "@type": "cr:RecordSet", |
| "@id": "fixations", |
| "name": "fixations", |
| "description": "One record per fixation event. Fixations detected by EyeLink's built-in algorithm (velocity 30 deg/s, acceleration 8000 deg/s²). Positions computed from raw gaze samples.", |
| "field": [ |
| { |
| "@type": "cr:Field", |
| "@id": "fixations/participant_id", |
| "name": "participant_id", |
| "description": "Participant identifier.", |
| "dataType": "sc:Text", |
| "references": {"field": {"@id": "participants/participant_id"}}, |
| "source": { |
| "fileObject": {"@id": "fixations-all-csv"}, |
| "extract": {"column": "participant_id"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "fixations/trial_uid", |
| "name": "trial_uid", |
| "description": "Unique trial ID linking to trials table.", |
| "dataType": "sc:Text", |
| "references": {"field": {"@id": "trials/trial_uid"}}, |
| "source": { |
| "fileObject": {"@id": "fixations-all-csv"}, |
| "extract": {"column": "trial_uid"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "fixations/fixation_index", |
| "name": "fixation_index", |
| "description": "Fixation order within trial and eye (1-indexed).", |
| "dataType": "sc:Integer", |
| "source": { |
| "fileObject": {"@id": "fixations-all-csv"}, |
| "extract": {"column": "fixation_index"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "fixations/eye", |
| "name": "eye", |
| "description": "Eye (L or R).", |
| "dataType": "sc:Text", |
| "source": { |
| "fileObject": {"@id": "fixations-all-csv"}, |
| "extract": {"column": "eye"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "fixations/start_time_ms", |
| "name": "start_time_ms", |
| "description": "Fixation start time relative to stimulus onset (ms).", |
| "dataType": "sc:Float", |
| "source": { |
| "fileObject": {"@id": "fixations-all-csv"}, |
| "extract": {"column": "start_time_ms"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "fixations/duration_ms", |
| "name": "duration_ms", |
| "description": "Fixation duration (ms).", |
| "dataType": "sc:Float", |
| "source": { |
| "fileObject": {"@id": "fixations-all-csv"}, |
| "extract": {"column": "duration_ms"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "fixations/x_px", |
| "name": "x_px", |
| "description": "Fixation X position in screen pixels (top-left origin, 3840x2160 display).", |
| "dataType": "sc:Float", |
| "source": { |
| "fileObject": {"@id": "fixations-all-csv"}, |
| "extract": {"column": "x_px"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "fixations/y_px", |
| "name": "y_px", |
| "description": "Fixation Y position in screen pixels (top-left origin, 3840x2160 display).", |
| "dataType": "sc:Float", |
| "source": { |
| "fileObject": {"@id": "fixations-all-csv"}, |
| "extract": {"column": "y_px"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "fixations/x_deg", |
| "name": "x_deg", |
| "description": "Fixation X position in degrees from screen center.", |
| "dataType": "sc:Float", |
| "source": { |
| "fileObject": {"@id": "fixations-all-csv"}, |
| "extract": {"column": "x_deg"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "fixations/y_deg", |
| "name": "y_deg", |
| "description": "Fixation Y position in degrees from screen center.", |
| "dataType": "sc:Float", |
| "source": { |
| "fileObject": {"@id": "fixations-all-csv"}, |
| "extract": {"column": "y_deg"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "fixations/pupil_size", |
| "name": "pupil_size", |
| "description": "Mean pupil size during fixation (EyeLink arbitrary area units).", |
| "dataType": "sc:Float", |
| "source": { |
| "fileObject": {"@id": "fixations-all-csv"}, |
| "extract": {"column": "pupil_size"} |
| } |
| } |
| ] |
| }, |
| { |
| "@type": "cr:RecordSet", |
| "@id": "gaze_samples", |
| "name": "gaze_samples", |
| "description": "Sample-level gaze data at 500 Hz per eye. One record per sample across all sessions. Data is distributed across per-session TSV files.", |
| "field": [ |
| { |
| "@type": "cr:Field", |
| "@id": "gaze_samples/participant_id", |
| "name": "participant_id", |
| "description": "Participant identifier.", |
| "dataType": "sc:Text", |
| "references": {"field": {"@id": "participants/participant_id"}}, |
| "source": { |
| "fileSet": {"@id": "gaze-tsv-files"}, |
| "extract": {"column": "participant_id"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "gaze_samples/trial_uid_raw", |
| "name": "trial_uid_raw", |
| "description": "Raw trial UID from EDF messages (e.g., B_MB01_T001).", |
| "dataType": "sc:Text", |
| "source": { |
| "fileSet": {"@id": "gaze-tsv-files"}, |
| "extract": {"column": "trial_uid_raw"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "gaze_samples/timestamp_rel_ms", |
| "name": "timestamp_rel_ms", |
| "description": "Time relative to stimulus onset (ms).", |
| "dataType": "sc:Float", |
| "source": { |
| "fileSet": {"@id": "gaze-tsv-files"}, |
| "extract": {"column": "timestamp_rel_ms"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "gaze_samples/eye", |
| "name": "eye", |
| "description": "Eye (L or R).", |
| "dataType": "sc:Text", |
| "source": { |
| "fileSet": {"@id": "gaze-tsv-files"}, |
| "extract": {"column": "eye"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "gaze_samples/x_px", |
| "name": "x_px", |
| "description": "Gaze X position in screen pixels.", |
| "dataType": "sc:Float", |
| "source": { |
| "fileSet": {"@id": "gaze-tsv-files"}, |
| "extract": {"column": "x_px"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "gaze_samples/y_px", |
| "name": "y_px", |
| "description": "Gaze Y position in screen pixels.", |
| "dataType": "sc:Float", |
| "source": { |
| "fileSet": {"@id": "gaze-tsv-files"}, |
| "extract": {"column": "y_px"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "gaze_samples/pupil_size", |
| "name": "pupil_size", |
| "description": "Pupil size (EyeLink arbitrary area units).", |
| "dataType": "sc:Float", |
| "source": { |
| "fileSet": {"@id": "gaze-tsv-files"}, |
| "extract": {"column": "pupil_size"} |
| } |
| }, |
| { |
| "@type": "cr:Field", |
| "@id": "gaze_samples/validity", |
| "name": "validity", |
| "description": "Sample validity (0 = valid gaze, 1 = missing/out-of-range).", |
| "dataType": "sc:Integer", |
| "source": { |
| "fileSet": {"@id": "gaze-tsv-files"}, |
| "extract": {"column": "validity"} |
| } |
| } |
| ] |
| } |
| ] |
| } |
|
|
