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31k
686k
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53.7k
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28.4k
o_pioneers!_24
en
"PART I. The Wild Land \n I \n One January day , thirty years ago , the little town of Hanover , anc(...TRUNCATED)
67,069
[{"COREF":"Emil Bergson","onset":1836,"offset":1854,"type":"PER"},{"COREF":"Emil Bergson","onset":18(...TRUNCATED)
[[0,169],[169,308],[308,536],[536,644],[644,863],[863,1055],[1055,1239],[1239,1425],[1425,1567],[156(...TRUNCATED)
the_mayor_of_casterbridge_143
en
"I. One evening of late summer , before the nineteenth century had reached one - third of its span ,(...TRUNCATED)
142,409
[{"COREF":"Newson","onset":1787,"offset":1794,"type":"PER"},{"COREF":"Elizabeth-Jane Newson","onset"(...TRUNCATED)
[[0,238],[238,451],[451,605],[605,836],[836,1017],[1017,1405],[1405,1612],[1612,1954],[1954,2245],[2(...TRUNCATED)
sense_and_sensibility_161
en
"CHAPTER I. The family of Dashwood had long been settled in Sussex . Their estate was large , and th(...TRUNCATED)
142,856
[{"COREF":"Mrs. Dashwood","onset":833,"offset":838,"type":"PER"},{"COREF":"Mrs. Dashwood","onset":18(...TRUNCATED)
[[0,68],[68,316],[316,494],[494,800],[800,913],[913,952],[952,1234],[1234,1330],[1330,1507],[1507,15(...TRUNCATED)
the_prince_and_the_pauper_1837
en
"CHAPTER I. The birth of the Prince and the Pauper . In the ancient city of London , on a certain au(...TRUNCATED)
81,619
[{"COREF":"Edward Tudor, Prince of Wales","onset":1060,"offset":1072,"type":"PER"},{"COREF":"Edward (...TRUNCATED)
[[0,52],[52,235],[235,341],[341,370],[370,521],[521,581],[581,748],[748,882],[882,1020],[1020,1288],(...TRUNCATED)
the_jungle_140
en
"CHAPTER I \n It was four o’clock when the ceremony was over and the carriages began to arrive . T(...TRUNCATED)
177,294
[{"COREF":"Marija Berczynskas","onset":169,"offset":187,"type":"PER"},{"COREF":"Marija Berczynskas",(...TRUNCATED)
[[0,95],[95,190],[190,581],[581,716],[716,984],[984,1285],[1285,1357],[1357,1565],[1565,1767],[1767,(...TRUNCATED)
emma_158
en
"VOLUME I \n CHAPTER I \n Emma Woodhouse , handsome , clever , and rich , with a comfortable home an(...TRUNCATED)
194,176
[{"COREF":"Emma Woodhouse","onset":23,"offset":37,"type":"PER"},{"COREF":"Emma Woodhouse","onset":26(...TRUNCATED)
[[0,272],[272,465],[465,692],[692,849],[849,904],[904,1304],[1304,1541],[1541,1658],[1658,1775],[177(...TRUNCATED)
dr._jekyll_and_mr._hyde_42
en
"STORY OF THE DOOR \n Mr. Utterson the lawyer was a man of a rugged countenance , that was never lig(...TRUNCATED)
30,992
[{"COREF":"Mr. Enfield","onset":20,"offset":32,"type":"PER"},{"COREF":"Mr. Gabriel John Utterson","o(...TRUNCATED)
[[0,242],[242,541],[541,723],[723,1199],[1199,1317],[1317,1492],[1492,1631],[1631,1806],[1806,1931],(...TRUNCATED)
the_three_musketeers_1257
en
"The Three Musketeers \n Chapter I. THE THREE PRESENTS OF D’ARTAGNAN THE ELDER \n On the first Mon(...TRUNCATED)
288,115
[{"COREF":"King Louis XIII","onset":921,"offset":929,"type":"PER"},{"COREF":"Cardinal Richelieu","on(...TRUNCATED)
[[0,79],[79,329],[329,722],[722,857],[857,1020],[1020,1194],[1194,1383],[1383,1646],[1646,1713],[171(...TRUNCATED)
fathers_and_sons_47935
en
"I \n \" Well , Peter ? Can not you see them yet ? \" asked a _ barin_[1 ] of about forty who , hatl(...TRUNCATED)
100,038
[{"COREF":"Nikolai Petrovich Kirsanov","onset":987,"offset":1014,"type":"PER"},{"COREF":"General Kir(...TRUNCATED)
[[0,21],[21,241],[241,405],[405,739],[739,796],[796,974],[974,1306],[1306,1584],[1584,1892],[1892,23(...TRUNCATED)
north_and_south_4276
en
"CHAPTER I. “ HASTE TO THE WEDDING . ” “ Wooed and married and a ’ . ” \n “ Edith ! (...TRUNCATED)
223,886
[{"COREF":"Edith","onset":75,"offset":80,"type":"PER"},{"COREF":"Margaret Hale","onset":90,"offset":(...TRUNCATED)
[[0,183],[183,316],[316,496],[496,549],[549,881],[881,1664],[1664,1999],[1999,2100],[2100,2235],[223(...TRUNCATED)
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bookcoref

Dataset Summary

This repository provides a standardized and reformatted version of the original bookcoref coreference resolution dataset.

The purpose of this formatting is to provide a unified document structure across multiple coreference datasets in order to simplify:

  • cross-dataset comparison,
  • multilingual experimentation,
  • benchmarking of coreference resolution systems,
  • interoperability between NLP pipelines,
  • and reproducible evaluation settings.

This repository does not introduce new annotations or modify the original coreference annotations. It only restructures the original dataset into a shared schema used across our benchmarking framework.


Original Dataset

This formatted version is derived from the dataset introduced in:

Giuliano Martinelli, Tommaso Bonomo, Pere-Lluís Huguet Cabot, and Roberto Navigli. 2025. BOOKCOREF: Coreference Resolution at Book Scale.

Original Repository

https://github.com/sapienzanlp/bookcoref

Citation

If you use this dataset, please cite the original work:

@inproceedings{martinelli-etal-2025-bookcoref,
    title = "{BOOKCOREF}: Coreference Resolution at Book Scale",
    author = "Martinelli, Giuliano  and
      Bonomo, Tommaso  and
      Huguet Cabot, Pere-Llu{'i}s  and
      Navigli, Roberto",
    editor = "Che, Wanxiang  and
      Nabende, Joyce  and
      Shutova, Ekaterina  and
      Pilehvar, Mohammad Taher",
    booktitle = "Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers)",
    month = jul,
    year = "2025",
    address = "Vienna, Austria",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2025.acl-long.1197/",
    doi = "10.18653/v1/2025.acl-long.1197",
    pages = "24526--24544",
    ISBN = "979-8-89176-251-0",
    }

Statistics

Statistic Value
Language en
Documents 53
Sentences 311,143
Tokens 11,014,749
Characters 51,989,137
Mentions 991,633
Entities 1,439

Dataset Structure

Each document contains:

  • file_name
  • language
  • text
  • stanza_tokens
  • mentions
  • sentence_spans

Mentions

Each mention contains the following fields and additional fields per-dataset:

  • onset
  • offset
  • COREF

Example

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