--- annotations_creators: - derived language: - eng license: unknown multilinguality: monolingual source_datasets: - KaLM-Embedding/LMEB task_categories: - text-retrieval task_ids: - multiple-choice-qa dataset_info: - config_name: content_time_qs-corpus features: - name: id dtype: string - name: text dtype: string - name: title dtype: string splits: - name: test num_bytes: 2055421 num_examples: 7463 download_size: 846368 dataset_size: 2055421 - config_name: content_time_qs-qrels features: - name: query-id dtype: string - name: corpus-id dtype: string - name: score dtype: int64 splits: - name: test num_bytes: 9909 num_examples: 190 download_size: 4070 dataset_size: 9909 - config_name: content_time_qs-queries features: - name: id dtype: string - name: text dtype: string splits: - name: test num_bytes: 16560 num_examples: 177 download_size: 8835 dataset_size: 16560 - config_name: content_time_qs-top_ranked features: - name: query-id dtype: string - name: corpus-ids list: string splits: - name: test num_bytes: 3244612 num_examples: 177 download_size: 3244940 dataset_size: 3244612 - config_name: date_span_time_qs-corpus features: - name: id dtype: string - name: text dtype: string - name: title dtype: string splits: - name: test num_bytes: 2055421 num_examples: 7463 download_size: 846368 dataset_size: 2055421 - config_name: date_span_time_qs-qrels features: - name: query-id dtype: string - name: corpus-id dtype: string - name: score dtype: int64 splits: - name: test num_bytes: 658543 num_examples: 12488 download_size: 46675 dataset_size: 658543 - config_name: date_span_time_qs-queries features: - name: id dtype: string - name: text dtype: string splits: - name: test num_bytes: 13766 num_examples: 180 download_size: 4735 dataset_size: 13766 - config_name: date_span_time_qs-top_ranked features: - name: query-id dtype: string - name: corpus-ids list: string splits: - name: test num_bytes: 3298485 num_examples: 180 download_size: 3298785 dataset_size: 3298485 - config_name: dates_time_qs-corpus features: - name: id dtype: string - name: text dtype: string - name: title dtype: string splits: - name: test num_bytes: 2055421 num_examples: 7463 download_size: 846368 dataset_size: 2055421 - config_name: dates_time_qs-qrels features: - name: query-id dtype: string - name: corpus-id dtype: string - name: score dtype: int64 splits: - name: test num_bytes: 397274 num_examples: 7463 download_size: 53134 dataset_size: 397274 - config_name: dates_time_qs-queries features: - name: id dtype: string - name: text dtype: string splits: - name: test num_bytes: 18937 num_examples: 330 download_size: 4962 dataset_size: 18937 - config_name: dates_time_qs-top_ranked features: - name: query-id dtype: string - name: corpus-ids list: string splits: - name: test num_bytes: 6188594 num_examples: 330 download_size: 6187792 dataset_size: 6188594 - config_name: day_span_time_qs-corpus features: - name: id dtype: string - name: text dtype: string - name: title dtype: string splits: - name: test num_bytes: 2055421 num_examples: 7463 download_size: 846368 dataset_size: 2055421 - config_name: day_span_time_qs-qrels features: - name: query-id dtype: string - name: corpus-id dtype: string - name: score dtype: int64 splits: - name: test num_bytes: 75005 num_examples: 1416 download_size: 7837 dataset_size: 75005 - config_name: day_span_time_qs-queries features: - name: id dtype: string - name: text dtype: string splits: - name: test num_bytes: 2776 num_examples: 24 download_size: 2267 dataset_size: 2776 - config_name: day_span_time_qs-top_ranked features: - name: query-id dtype: string - name: corpus-ids list: string splits: - name: test num_bytes: 439790 num_examples: 24 download_size: 441125 dataset_size: 439790 - config_name: earlier_today_time_qs-corpus features: - name: id dtype: string - name: text dtype: string - name: title dtype: string splits: - name: test num_bytes: 2055421 num_examples: 7463 download_size: 846368 dataset_size: 2055421 - config_name: earlier_today_time_qs-qrels features: - name: query-id dtype: string - name: corpus-id dtype: string - name: score dtype: int64 splits: - name: test num_bytes: 13112 num_examples: 248 download_size: 3454 dataset_size: 13112 - config_name: earlier_today_time_qs-queries features: - name: id dtype: string - name: text dtype: string splits: - name: test num_bytes: 1358 num_examples: 12 download_size: 2057 dataset_size: 1358 - config_name: earlier_today_time_qs-top_ranked features: - name: query-id dtype: string - name: corpus-ids list: string splits: - name: test num_bytes: 219895 num_examples: 12 download_size: 221336 dataset_size: 219895 - config_name: last_named_day_time_qs-corpus features: - name: id dtype: string - name: text dtype: string - name: title dtype: string splits: - name: test num_bytes: 2055421 num_examples: 7463 download_size: 846368 dataset_size: 2055421 - config_name: last_named_day_time_qs-qrels features: - name: query-id dtype: string - name: corpus-id dtype: string - name: score dtype: int64 splits: - name: test num_bytes: 16332 num_examples: 308 download_size: 3864 dataset_size: 16332 - config_name: last_named_day_time_qs-queries features: - name: id dtype: string - name: text dtype: string splits: - name: test num_bytes: 1268 num_examples: 12 download_size: 2062 dataset_size: 1268 - config_name: last_named_day_time_qs-top_ranked features: - name: query-id dtype: string - name: corpus-ids list: string splits: - name: test num_bytes: 219895 num_examples: 12 download_size: 221336 dataset_size: 219895 - config_name: month_time_qs-corpus features: - name: id dtype: string - name: text dtype: string - name: title dtype: string splits: - name: test num_bytes: 2055421 num_examples: 7463 download_size: 846368 dataset_size: 2055421 - config_name: month_time_qs-qrels features: - name: query-id dtype: string - name: corpus-id dtype: string - name: score dtype: int64 splits: - name: test num_bytes: 392653 num_examples: 7463 download_size: 51424 dataset_size: 392653 - config_name: month_time_qs-queries features: - name: id dtype: string - name: text dtype: string splits: - name: test num_bytes: 10219 num_examples: 100 download_size: 3417 dataset_size: 10219 - config_name: month_time_qs-top_ranked features: - name: query-id dtype: string - name: corpus-ids list: string splits: - name: test num_bytes: 1867002 num_examples: 100 download_size: 1867814 dataset_size: 1867002 - config_name: rel_day_time_qs-corpus features: - name: id dtype: string - name: text dtype: string - name: title dtype: string splits: - name: test num_bytes: 2055421 num_examples: 7463 download_size: 846368 dataset_size: 2055421 - config_name: rel_day_time_qs-qrels features: - name: query-id dtype: string - name: corpus-id dtype: string - name: score dtype: int64 splits: - name: test num_bytes: 397274 num_examples: 7463 download_size: 53039 dataset_size: 397274 - config_name: rel_day_time_qs-queries features: - name: id dtype: string - name: text dtype: string splits: - name: test num_bytes: 33380 num_examples: 317 download_size: 6349 dataset_size: 33380 - config_name: rel_day_time_qs-top_ranked features: - name: query-id dtype: string - name: corpus-ids list: string splits: - name: test num_bytes: 5956078 num_examples: 317 download_size: 5955395 dataset_size: 5956078 - config_name: rel_month_time_qs-corpus features: - name: id dtype: string - name: text dtype: string - name: title dtype: string splits: - name: test num_bytes: 2055421 num_examples: 7463 download_size: 846368 dataset_size: 2055421 - config_name: rel_month_time_qs-qrels features: - name: query-id dtype: string - name: corpus-id dtype: string - name: score dtype: int64 splits: - name: test num_bytes: 392653 num_examples: 7463 download_size: 51424 dataset_size: 392653 - config_name: rel_month_time_qs-queries features: - name: id dtype: string - name: text dtype: string splits: - name: test num_bytes: 10560 num_examples: 100 download_size: 3280 dataset_size: 10560 - config_name: rel_month_time_qs-top_ranked features: - name: query-id dtype: string - name: corpus-ids list: string splits: - name: test num_bytes: 1867002 num_examples: 100 download_size: 1867814 dataset_size: 1867002 - config_name: rel_session_time_qs-corpus features: - name: id dtype: string - name: text dtype: string - name: title dtype: string splits: - name: test num_bytes: 2055421 num_examples: 7463 download_size: 846368 dataset_size: 2055421 - config_name: rel_session_time_qs-qrels features: - name: query-id dtype: string - name: corpus-id dtype: string - name: score dtype: int64 splits: - name: test num_bytes: 397274 num_examples: 7463 download_size: 53134 dataset_size: 397274 - config_name: rel_session_time_qs-queries features: - name: id dtype: string - name: text dtype: string splits: - name: test num_bytes: 43185 num_examples: 330 download_size: 7142 dataset_size: 43185 - config_name: rel_session_time_qs-top_ranked features: - name: query-id dtype: string - name: corpus-ids list: string splits: - name: test num_bytes: 6188594 num_examples: 330 download_size: 6187792 dataset_size: 6188594 - config_name: session_span_time_qs-corpus features: - name: id dtype: string - name: text dtype: string - name: title dtype: string splits: - name: test num_bytes: 2055421 num_examples: 7463 download_size: 846368 dataset_size: 2055421 - config_name: session_span_time_qs-qrels features: - name: query-id dtype: string - name: corpus-id dtype: string - name: score dtype: int64 splits: - name: test num_bytes: 932775 num_examples: 17571 download_size: 64030 dataset_size: 932775 - config_name: session_span_time_qs-queries features: - name: id dtype: string - name: text dtype: string splits: - name: test num_bytes: 31029 num_examples: 258 download_size: 6409 dataset_size: 31029 - config_name: session_span_time_qs-top_ranked features: - name: query-id dtype: string - name: corpus-ids list: string splits: - name: test num_bytes: 4869152 num_examples: 258 download_size: 4868969 dataset_size: 4869152 - config_name: session_time_qs-corpus features: - name: id dtype: string - name: text dtype: string - name: title dtype: string splits: - name: test num_bytes: 2055421 num_examples: 7463 download_size: 846368 dataset_size: 2055421 - config_name: session_time_qs-qrels features: - name: query-id dtype: string - name: corpus-id dtype: string - name: score dtype: int64 splits: - name: test num_bytes: 358906 num_examples: 6751 download_size: 48274 dataset_size: 358906 - config_name: session_time_qs-queries features: - name: id dtype: string - name: text dtype: string splits: - name: test num_bytes: 34530 num_examples: 294 download_size: 6642 dataset_size: 34530 - config_name: session_time_qs-top_ranked features: - name: query-id dtype: string - name: corpus-ids list: string splits: - name: test num_bytes: 5528873 num_examples: 294 download_size: 5528298 dataset_size: 5528873 configs: - config_name: content_time_qs-corpus data_files: - split: test path: content_time_qs-corpus/test-* - config_name: content_time_qs-qrels data_files: - split: test path: content_time_qs-qrels/test-* - config_name: content_time_qs-queries data_files: - split: test path: content_time_qs-queries/test-* - config_name: content_time_qs-top_ranked data_files: - split: test path: content_time_qs-top_ranked/test-* - config_name: date_span_time_qs-corpus data_files: - split: test path: date_span_time_qs-corpus/test-* - config_name: date_span_time_qs-qrels data_files: - split: test path: date_span_time_qs-qrels/test-* - config_name: date_span_time_qs-queries data_files: - split: test path: date_span_time_qs-queries/test-* - config_name: date_span_time_qs-top_ranked data_files: - split: test path: date_span_time_qs-top_ranked/test-* - config_name: dates_time_qs-corpus data_files: - split: test path: dates_time_qs-corpus/test-* - config_name: dates_time_qs-qrels data_files: - split: test path: dates_time_qs-qrels/test-* - config_name: dates_time_qs-queries data_files: - split: test path: dates_time_qs-queries/test-* - config_name: dates_time_qs-top_ranked data_files: - split: test path: dates_time_qs-top_ranked/test-* - config_name: day_span_time_qs-corpus data_files: - split: test path: day_span_time_qs-corpus/test-* - config_name: day_span_time_qs-qrels data_files: - split: test path: day_span_time_qs-qrels/test-* - config_name: day_span_time_qs-queries data_files: - split: test path: day_span_time_qs-queries/test-* - config_name: day_span_time_qs-top_ranked data_files: - split: test path: day_span_time_qs-top_ranked/test-* - config_name: earlier_today_time_qs-corpus data_files: - split: test path: earlier_today_time_qs-corpus/test-* - config_name: earlier_today_time_qs-qrels data_files: - split: test path: earlier_today_time_qs-qrels/test-* - config_name: earlier_today_time_qs-queries data_files: - split: test path: earlier_today_time_qs-queries/test-* - config_name: earlier_today_time_qs-top_ranked data_files: - split: test path: earlier_today_time_qs-top_ranked/test-* - config_name: last_named_day_time_qs-corpus data_files: - split: test path: last_named_day_time_qs-corpus/test-* - config_name: last_named_day_time_qs-qrels data_files: - split: test path: last_named_day_time_qs-qrels/test-* - config_name: last_named_day_time_qs-queries data_files: - split: test path: last_named_day_time_qs-queries/test-* - config_name: last_named_day_time_qs-top_ranked data_files: - split: test path: last_named_day_time_qs-top_ranked/test-* - config_name: month_time_qs-corpus data_files: - split: test path: month_time_qs-corpus/test-* - config_name: month_time_qs-qrels data_files: - split: test path: month_time_qs-qrels/test-* - config_name: month_time_qs-queries data_files: - split: test path: month_time_qs-queries/test-* - config_name: month_time_qs-top_ranked data_files: - split: test path: month_time_qs-top_ranked/test-* - config_name: rel_day_time_qs-corpus data_files: - split: test path: rel_day_time_qs-corpus/test-* - config_name: rel_day_time_qs-qrels data_files: - split: test path: rel_day_time_qs-qrels/test-* - config_name: rel_day_time_qs-queries data_files: - split: test path: rel_day_time_qs-queries/test-* - config_name: rel_day_time_qs-top_ranked data_files: - split: test path: rel_day_time_qs-top_ranked/test-* - config_name: rel_month_time_qs-corpus data_files: - split: test path: rel_month_time_qs-corpus/test-* - config_name: rel_month_time_qs-qrels data_files: - split: test path: rel_month_time_qs-qrels/test-* - config_name: rel_month_time_qs-queries data_files: - split: test path: rel_month_time_qs-queries/test-* - config_name: rel_month_time_qs-top_ranked data_files: - split: test path: rel_month_time_qs-top_ranked/test-* - config_name: rel_session_time_qs-corpus data_files: - split: test path: rel_session_time_qs-corpus/test-* - config_name: rel_session_time_qs-qrels data_files: - split: test path: rel_session_time_qs-qrels/test-* - config_name: rel_session_time_qs-queries data_files: - split: test path: rel_session_time_qs-queries/test-* - config_name: rel_session_time_qs-top_ranked data_files: - split: test path: rel_session_time_qs-top_ranked/test-* - config_name: session_span_time_qs-corpus data_files: - split: test path: session_span_time_qs-corpus/test-* - config_name: session_span_time_qs-qrels data_files: - split: test path: session_span_time_qs-qrels/test-* - config_name: session_span_time_qs-queries data_files: - split: test path: session_span_time_qs-queries/test-* - config_name: session_span_time_qs-top_ranked data_files: - split: test path: session_span_time_qs-top_ranked/test-* - config_name: session_time_qs-corpus data_files: - split: test path: session_time_qs-corpus/test-* - config_name: session_time_qs-qrels data_files: - split: test path: session_time_qs-qrels/test-* - config_name: session_time_qs-queries data_files: - split: test path: session_time_qs-queries/test-* - config_name: session_time_qs-top_ranked data_files: - split: test path: session_time_qs-top_ranked/test-* tags: - mteb - text ---

TMD

An MTEB dataset
Massive Text Embedding Benchmark
LMEB dialogue-memory retrieval task based on the Temporal Memory Dataset, evaluating date, session, and relative-time retrieval over dialogues. | | | |---------------|---------------------------------------------| | Task category | Retrieval (text-to-text) | | Domains | Social, Spoken | | Reference | [LMEB: Long-horizon Memory Embedding Benchmark](https://github.com/Zyphra/TemporalMemoryDataset) | Source datasets: - [KaLM-Embedding/LMEB](https://huggingface.co/datasets/KaLM-Embedding/LMEB) ## How to evaluate on this task You can evaluate an embedding model on this dataset using the following code: ```python import mteb task = mteb.get_task("TMD") model = mteb.get_model(YOUR_MODEL) mteb.evaluate(model, task) ``` To learn more about how to run models on `mteb` task check out the [GitHub repository](https://github.com/embeddings-benchmark/mteb). ## Citation If you use this dataset, please cite the dataset as well as [mteb](https://github.com/embeddings-benchmark/mteb), as this dataset likely includes additional processing as a part of the [MMTEB Contribution](https://github.com/embeddings-benchmark/mteb/tree/main/docs/mmteb). ```bibtex @misc{zhao2026lmeb, archiveprefix = {arXiv}, author = {Zhao, Xinping and Hu, Xinshuo and Xu, Jiaxin and Tang, Danyu and Zhang, Xin and Zhou, Mengjia and Zhong, Yan and Zhou, Yao and Shan, Zifei and Zhang, Meishan and Hu, Baotian and Zhang, Min}, eprint = {2603.12572}, primaryclass = {cs.CL}, title = {LMEB: Long-horizon Memory Embedding Benchmark}, url = {https://arxiv.org/abs/2603.12572}, year = {2026}, } @article{enevoldsen2025mmtebmassivemultilingualtext, title={MMTEB: Massive Multilingual Text Embedding Benchmark}, author={Kenneth Enevoldsen and Isaac Chung and Imene Kerboua and Márton Kardos and Ashwin Mathur and David Stap and Jay Gala and Wissam Siblini and Dominik Krzemiński and Genta Indra Winata and Saba Sturua and Saiteja Utpala and Mathieu Ciancone and Marion Schaeffer and Gabriel Sequeira and Diganta Misra and Shreeya Dhakal and Jonathan Rystrøm and Roman Solomatin and Ömer Çağatan and Akash Kundu and Martin Bernstorff and Shitao Xiao and Akshita Sukhlecha and Bhavish Pahwa and Rafał Poświata and Kranthi Kiran GV and Shawon Ashraf and Daniel Auras and Björn Plüster and Jan Philipp Harries and Loïc Magne and Isabelle Mohr and Mariya Hendriksen and Dawei Zhu and Hippolyte Gisserot-Boukhlef and Tom Aarsen and Jan Kostkan and Konrad Wojtasik and Taemin Lee and Marek Šuppa and Crystina Zhang and Roberta Rocca and Mohammed Hamdy and Andrianos Michail and John Yang and Manuel Faysse and Aleksei Vatolin and Nandan Thakur and Manan Dey and Dipam Vasani and Pranjal Chitale and Simone Tedeschi and Nguyen Tai and Artem Snegirev and Michael Günther and Mengzhou Xia and Weijia Shi and Xing Han Lù and Jordan Clive and Gayatri Krishnakumar and Anna Maksimova and Silvan Wehrli and Maria Tikhonova and Henil Panchal and Aleksandr Abramov and Malte Ostendorff and Zheng Liu and Simon Clematide and Lester James Miranda and Alena Fenogenova and Guangyu Song and Ruqiya Bin Safi and Wen-Ding Li and Alessia Borghini and Federico Cassano and Hongjin Su and Jimmy Lin and Howard Yen and Lasse Hansen and Sara Hooker and Chenghao Xiao and Vaibhav Adlakha and Orion Weller and Siva Reddy and Niklas Muennighoff}, publisher = {arXiv}, journal={arXiv preprint arXiv:2502.13595}, year={2025}, url={https://arxiv.org/abs/2502.13595}, doi = {10.48550/arXiv.2502.13595}, } @article{muennighoff2022mteb, author = {Muennighoff, Niklas and Tazi, Nouamane and Magne, Loïc and Reimers, Nils}, title = {MTEB: Massive Text Embedding Benchmark}, publisher = {arXiv}, journal={arXiv preprint arXiv:2210.07316}, year = {2022} url = {https://arxiv.org/abs/2210.07316}, doi = {10.48550/ARXIV.2210.07316}, } ``` # Dataset Statistics
Dataset Statistics The following code contains the descriptive statistics from the task. These can also be obtained using: ```python import mteb task = mteb.get_task("TMD") desc_stats = task.metadata.descriptive_stats ``` ```json { "test": { "num_samples": 91690, "number_of_characters": 21569954, "documents_text_statistics": { "total_text_length": 21394356, "min_text_length": 75, "average_text_length": 238.8936084684443, "max_text_length": 5436, "unique_texts": 7463 }, "documents_image_statistics": null, "documents_audio_statistics": null, "queries_text_statistics": { "total_text_length": 175598, "min_text_length": 34, "average_text_length": 82.28584817244611, "max_text_length": 120, "unique_texts": 2009 }, "queries_image_statistics": null, "queries_audio_statistics": null, "relevant_docs_statistics": { "num_relevant_docs": 76287, "min_relevant_docs_per_query": 1, "average_relevant_docs_per_query": 35.748359887535145, "max_relevant_docs_per_query": 217, "unique_relevant_docs": 56754 }, "top_ranked_statistics": { "num_top_ranked": 1353477, "min_top_ranked_per_query": 432, "average_top_ranked_per_query": 634.2441424554827, "max_top_ranked_per_query": 715 } } } ```
--- *This dataset card was automatically generated using [MTEB](https://github.com/embeddings-benchmark/mteb)*