| --- |
| pretty_name: MathMentorDB (labeled subset) |
| license: cc-by-nc-sa-4.0 |
| language: |
| - en |
| task_categories: |
| - text-classification |
| tags: |
| - education |
| - tutoring |
| - mathematics |
| - dialogue |
| - discourse-analysis |
| size_categories: |
| - 100K<n<1M |
| extra_gated_prompt: >- |
| MathMentorDB Data Use Agreement. By requesting access you agree to the |
| following terms, which supplement the CC BY-NC-SA 4.0 license: (1) you will |
| use the data for non-commercial research purposes only; (2) you will not |
| attempt to identify, de-anonymize, or contact any individual represented in |
| the data; (3) you will not redistribute the raw data (point others to this |
| repository instead); (4) any models or publications derived from the data |
| must not expose personally identifying information; (5) you will report any |
| privacy concerns you discover to the dataset maintainers via the community |
| tab so affected content can be removed. |
| extra_gated_fields: |
| Affiliation: text |
| Intended research use (one sentence): text |
| I agree to the Data Use Agreement above: checkbox |
| extra_gated_button_content: Request access under the DUA |
| --- |
| |
| # MathMentorDB (labeled subset) |
|
|
| MathMentorDB is a large-scale dataset of authentic, multi-party mathematics |
| tutoring dialogues collected from a public online mathematics community. The |
| full corpus comprises 5.4M messages across 200,332 conversations and 43,249 |
| pseudonymized users. This repository releases the **labeled subset** described |
| in the accompanying paper (under review; citation withheld for anonymity): |
|
|
| - **7,000 conversations / 165,275 messages**, every message labeled with a |
| 24-move hierarchical discourse taxonomy (classifier: Gemini 2.5 Flash, |
| two-pass hierarchical classification) |
| - **Conversation-level resolution labels** (resolved / abandoned / unclear) |
| assigned by an independent classifier reading only the raw text |
| - Canonical splits used in the paper's analyses |
|
|
| The full 200K-conversation corpus will be released under the same gated DUA |
| mechanism upon publication. |
|
|
| ## Files and splits |
|
|
| | File | Conversations | Messages | Tutor tier | |
| |---|---|---|---| |
| | `data/expert_train.jsonl` | 2,500 | 59,124 | high-activity (top 50 by composite activity score) | |
| | `data/expert_heldout.jsonl` | 1,000 | 24,228 | high-activity, held out | |
| | `data/nonexpert_train.jsonl` | 2,500 | 58,444 | occasional (rank 51+) | |
| | `data/nonexpert_heldout.jsonl` | 1,000 | 23,479 | occasional, held out | |
|
|
| Tier note: the high-activity / occasional split reflects participation volume, |
| not verified tutoring skill. |
|
|
| ## Schema |
|
|
| One conversation per JSONL line: |
|
|
| ```json |
| { |
| "conversation_id": 393, |
| "tutor_id": "user_00001", // opaque pseudonym, consistent across splits |
| "tutor_tier": "expert", // activity tier (see note above) |
| "tutor_score": 0.66, |
| "student_id": "user_00002", // opaque pseudonym |
| "resolution": "resolved", // resolved | abandoned | unclear |
| "resolution_confidence": "high", |
| "n_messages": 8, |
| "messages": [ |
| { |
| "idx": 0, |
| "role": "student", |
| "category": "Student-Academic", |
| "move": "Knowledge-Gap", |
| "category_confidence": "high", // high | medium | low |
| "move_confidence": "high", |
| "message_text": "..." // emails, platform tags, and user |
| } // mentions redacted |
| ] |
| } |
| ``` |
|
|
| ## 24-move discourse taxonomy |
|
|
| Four macro-categories, 24 moves, no residual "Other" class: |
|
|
| - **Tutor-Academic (7):** Knowledge-Check, Guidance-Direct, |
| Guidance-Scaffolding, Tutor-Question, Correction, Confirm-Positive, |
| Confirm-Negative |
| - **Student-Academic (9):** Knowledge-Gap, Knowledge-Recall, |
| Inference-Attempt, Inference-Understanding, Breakthrough, Explain-Problem, |
| Explain-Reasoning, Student-Question, Student-Confirm |
| - **Socio-Emotional (4):** Encouragement, Frustration, Empathy-Rapport, |
| Confidence-Express |
| - **Non-Academic (4):** Greeting-Closing, Platform-Command, Small-Talk, |
| Acknowledgment |
|
|
| Taxonomy provenance, construction process, and reliability evidence are |
| documented in the paper appendix. Classification prompts are included in the |
| paper's appendix; the full per-category prompt set ships with the code release. |
|
|
| ## Loading |
|
|
| ```python |
| from datasets import load_dataset |
| ds = load_dataset("mathmentordb/MathMentorDB", |
| data_files={"expert_train": "data/expert_train.jsonl", |
| "expert_heldout": "data/expert_heldout.jsonl", |
| "nonexpert_train": "data/nonexpert_train.jsonl", |
| "nonexpert_heldout": "data/nonexpert_heldout.jsonl"}) |
| ``` |
|
|
| ## Provenance and processing |
|
|
| Conversations were extracted from public help channels of a large online |
| mathematics community (chat exports, January 2023), segmented using platform |
| close markers (two-annotator segmentation check, kappa = 0.94), and |
| pseudonymized. Move and resolution labels were produced by independent LLM |
| classifiers; run-to-run consistency on a 30-conversation held-out set is 95.0% |
| (move level) and 98.1% (category level). |
|
|
| ## Ethics and privacy |
|
|
| Usernames are replaced with pseudonyms; the release excludes images and |
| attachments. Collection and release were reviewed by the authors' institutional |
| review board (exempt determination; details withheld for anonymous review). |
| The data are shared under CC BY-NC-SA 4.0 plus the Data Use Agreement above, |
| which prohibits de-anonymization and redistribution. If you find content that |
| should be removed (personal information, identifying details), open a |
| discussion in the community tab and it will be removed. |
|
|
| ## Citation |
|
|
| Paper under review; citation will be added upon publication. Until then, |
| please cite this repository. |
|
|
