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--- |
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license: apache-2.0 |
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language: |
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- en |
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pretty_name: Wiki DPR - Lance example |
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--- |
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# Wiki-DPR (first 10k samples of the "multiset" version) |
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## Overview |
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This is the wikipedia split used to evaluate the Dense Passage Retrieval (DPR) model. |
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The original dataset contains 21M passages from wikipedia along with their DPR embeddings. |
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The wikipedia articles were split into multiple, disjoint text blocks of 100 words as passages. |
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## Embeddings |
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Passages are embedded using this model: |
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https://huggingface.co/sentence-transformers/facebook-dpr-ctx_encoder-multiset-base |
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Questions should embedded using this model: |
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https://huggingface.co/sentence-transformers/facebook-dpr-question_encoder-multiset-base |
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## Dataset format |
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The dataset is in Lance format and contains an index over the `embeddings` column, created using |
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```python |
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>>> table.create_index(metric="dot", vector_column_name="embeddings") |
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``` |
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## Usage example |
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```python |
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>>> import lance |
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>>> from sentence_transformers import SentenceTransformer |
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>>> ds = lance.dataset("hf://datasets/lhoestq/wiki-dpr-lance-example/dummy-multiset.lance") |
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>>> ds.has_index |
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True |
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>>> q = embeddings = model.encode(["In what year did ABBA start ?"])[0] |
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>>> df = ds.to_table(nearest={"column": "embeddings", "q": embeddings, "k": 5}).to_pandas() |
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>>> df |
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embeddings id text title _distance |
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0 [-0.18065824, 0.25305566, 0.1199052, -0.571353... 9929 numbers from respective albums, but the lukewa... ABBA -71.944893 |
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1 [-0.40663224, 0.22715698, 0.06069667, -0.33584... 9934 small label like Playboy Records did not have ... ABBA -71.606918 |
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2 [-0.11441193, -0.08622038, 0.1414486, -0.53792... 9931 into the mainstream international market with ... ABBA -71.264702 |
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3 [-0.10480262, 0.24277505, 0.0049878294, -0.406... 9930 on her own. Frequent recording sessions brough... ABBA -71.059311 |
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4 [-0.013585132, 0.010848946, 0.29921767, -0.283... 9933 credited to Björn & Benny, Agnetha & Anni-Fri... ABBA -71.030861 |
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>>> df.iloc[0].text[435:544] |
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"It was during 1971 that the four artists began working together more, adding vocals to the others' recordings" |
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``` |
