# WEC-Eng
A large-scale dataset for cross-document event coreference extracted from English Wikipedia. </br>

- **Repository (Code for generating WEC):** https://github.com/AlonEirew/extract-wec
- **Paper:** https://aclanthology.org/2021.naacl-main.198/

### Languages

English

## Dataset Structure

### Data Instances


```json
{
        "coref_chain": 2293469,
        "coref_link": "Family Values Tour 1998",
        "doc_id": "House of Pain",
        "mention_context": [
            "From",
            "then",
            "on",
            ",",
            "the",
            "members",
            "continued",
            "their"
  ],
  "mention_head": "Tour",
  "mention_head_lemma": "Tour",
  "mention_head_pos": "PROPN",
  "mention_id": "108172",
  "mention_index": 1,
  "mention_ner": "UNK",
  "mention_type": 8,
  "predicted_coref_chain": null,
  "sent_id": 2,
  "tokens_number": [
    50,
    51,
    52,
    53
  ],
  "tokens_str": "Family Values Tour 1998",
  "topic_id": -1
}
```

### Data Fields

|Field|Value Type|Value|
|---|:---:|---|
|coref_chain|Numeric|Coreference chain/cluster ID|
|coref_link|String|Coreference link wikipeida page/article title|
|doc_id|String|Mention page/article title|
|mention_context|List[String]|Tokenized mention paragraph (including mention)|
|mention_head|String|Mention span head token|
|mention_head_lemma|String|Mention span head token lemma|
|mention_head_pos|String|Mention span head token POS|
|mention_id|String|Mention id|
|mention_index|Numeric|Mention index in json file|
|mention_ner|String|Mention NER|
|tokens_number|List[Numeric]|Mentions tokens ids within the context|
|tokens_str|String|Mention span text|
|topic_id|Ignore|Ignore|
|mention_type|Ignore|Ignore|
|predicted_coref_chain|Ignore|Ignore|
|sent_id|Ignore|Ignore|


### Data Splits

- Train - Train_Event_gold_mentions.json 
- Dev - Dev_Event_gold_mentions_validated.json
- Test - Test_Event_gold_mentions_validated.json
- All (without automatic filtering) - All_Event_gold_mentions_unfiltered.json 

|                             | Train   | Valid | Test |
| -----                       | ------ | ----- | ----  |
| Clusters                    | 7,042  |  233  | 322   |
| Event Mentions              | 40,529 |  1250 | 1,893 |