Datasets › ACE 2005

ACE 2005 (ACE 2005 Multilingual Training Corpus)

archive 2025-07-28

ACE 2005 Multilingual Training Corpus contains the complete set of English, Arabic and Chinese training data for the 2005 Automatic Content Extraction (ACE) technology evaluation. The corpus consists of data of various types annotated for entities, relations and events by the Linguistic Data Consortium (LDC) with support from the ACE Program and additional assistance from LDC.

Source: https://catalog.ldc.upenn.edu/LDC2006T06 Image Source: https://arxiv.org/pdf/1811.06031.pdf

Benchmarks archive 2025-07-28

All 8 leaderboards whose dataset resolves to this page shown (sort by any header). "First row" is the archive's own first row at snapshot, in the archive's row order; nothing here re-ranks and metric direction is not asserted.

Papers archive 2025-07-28

30 shown of 58 papers with a leaderboard row on this dataset's benchmarks, newest first. The archive's own "papers using this dataset" list was never published, so this is the benchmark-backed subset; the archive's count for this dataset is 65. The Syntology column is from Syntology's graph (read 2026-09-24), stated per sample; it is not part of any archive number.

DateSamples run Syntology
ITER: Iterative Transformer-based Entity Recognition and Relation Extraction 1 1 11 Nov 2024 not harvested
To be Continuous, or to be Discrete, Those are Bits of Questions 1 1 12 Jun 2024 not harvested
GoLLIE: Annotation Guidelines improve Zero-Shot Information-Extraction 1 2 5 Oct 2023 ran 18 of 25 samples (7 unverified)
UniversalNER: Targeted Distillation from Large Language Models for Open Named Entity Recognition 2 1 7 Aug 2023 ran 5 of 12 samples (7 unverified)
PromptNER: Prompt Locating and Typing for Named Entity Recognition 1 2 26 May 2023 not harvested
DiffusionNER: Boundary Diffusion for Named Entity Recognition 3 1 22 May 2023 not harvested
Autoregressive Structured Prediction with Language Models 1 1 26 Oct 2022 not harvested
A Multi-Gate Encoder for Joint Entity and Relation Extraction 0 1 1 Oct 2022 not harvested
Optimizing Bi-Encoder for Named Entity Recognition via Contrastive Learning 1 1 30 Aug 2022 ran 4 of 4 samples (0 unverified)
An Embarrassingly Easy but Strong Baseline for Nested Named Entity Recognition 1 1 9 Aug 2022 not harvested
DeepStruct: Pretraining of Language Models for Structure Prediction 1 7 21 May 2022 ran 7 of 13 samples (6 unverified)
Boundary Smoothing for Named Entity Recognition 1 1 26 Apr 2022 not harvested
Parallel Instance Query Network for Named Entity Recognition 1 2 20 Mar 2022 not harvested
Unified Named Entity Recognition as Word-Word Relation Classification 1 1 19 Dec 2021 not harvested
Fusing Heterogeneous Factors with Triaffine Mechanism for Nested Named Entity Recognition 1 2 14 Oct 2021 not harvested
Packed Levitated Marker for Entity and Relation Extraction 2 1 13 Sep 2021 ran 3 of 9 samples (6 unverified; 1 pointer-only for licence)
A Partition Filter Network for Joint Entity and Relation Extraction 1 1 27 Aug 2021 ran 5 of 7 samples (2 unverified)
Nested Named Entity Recognition via Explicitly Excluding the Influence of the Best Path 1 1 1 Aug 2021 not harvested
BoningKnife: Joint Entity Mention Detection and Typing for Nested NER via prior Boundary Knowledge 0 3 20 Jul 2021 not harvested
HySPA: Hybrid Span Generation for Scalable Text-to-Graph Extraction 1 2 30 Jun 2021 ran 0 of 5 samples (5 unverified)
Text2Event: Controllable Sequence-to-Structure Generation for End-to-end Event Extraction 1 2 17 Jun 2021 ran 4 of 4 samples (0 unverified)
A Unified Generative Framework for Various NER Subtasks 1 1 2 Jun 2021 not harvested
A Sequence-to-Set Network for Nested Named Entity Recognition 1 1 19 May 2021 ran 5 of 5 samples (0 unverified; 5 pointer-only for licence)
Locate and Label: A Two-stage Identifier for Nested Named Entity Recognition 1 2 14 May 2021 not harvested
Dual Pointer Network for Fast Extraction of Multiple Relations in a Sentence 0 1 5 Mar 2021 not harvested
A Trigger-Sense Memory Flow Framework for Joint Entity and Relation Extraction 1 1 25 Jan 2021 not harvested
Nested Named Entity Recognition with Partially-Observed TreeCRFs 1 1 15 Dec 2020 not harvested
A Frustratingly Easy Approach for Entity and Relation Extraction 2 3 24 Oct 2020 ran 3 of 4 samples (1 unverified; 1 pointer-only for licence)
Named Entity Recognition and Relation Extraction using Enhanced Table Filling by Contextualized Representations 1 1 15 Oct 2020 not harvested
Two are Better than One: Joint Entity and Relation Extraction with Table-Sequence Encoders 2 1 8 Oct 2020 ran 0 of 3 samples (3 unverified; 3 pointer-only for licence)

The full list of 58 is in the JSON twin.

Dataset loaders archive 2025-07-28

No loader listed in the archive.

Tasks archive 2025-07-28

License archive 2025-07-28

No licence recorded in the archive. Absence here is not a statement about the dataset's terms.

Modalities archive 2025-07-28

Languages archive 2025-07-28

Variants archive 2025-07-28

  • ACE 2005
  • ACE2005

2 variant names, as the archive lists them.

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