Grunnleggende konsepter
This work introduces a meta dataset for few-shot relation extraction that captures realistic real-world scenarios, and conducts a comprehensive evaluation of six recent few-shot relation extraction methods, revealing the need for substantial future research in this domain.
Sammendrag
The authors introduce a meta dataset for few-shot relation extraction (FSRE) that includes three datasets: NYT29, WIKIDATA, and a few-shot variant of TACRED. These datasets were carefully constructed to capture realistic real-world scenarios for FSRE, such as:
- The test relations are different from any relations available in the background dataset.
- The training data for each relation is very limited (1 or 5 examples).
- The distribution of relations is not uniform, with some relations being rarer than others.
- Most candidate relation mentions do not correspond to the target relations.
- Entities participating in relations include named entities, pronouns, and common nouns.
The authors then conduct a comprehensive evaluation of six recent FSRE methods on this meta dataset. The results show that no single method emerges as a clear winner across all scenarios, and the overall performance is notably low, indicating a substantial need for future research in this domain.
The key findings are:
- Performance varies drastically between the datasets, underscoring the importance of using multiple evaluation datasets.
- The overall performance across all datasets is low, suggesting significant room for improvement.
- Qualitative error analysis on the WIKIDATA dataset reveals challenges such as the prevalence of NOTA instances and the difficulty in capturing complex relations.
The authors release all versions of the data, both supervised and few-shot, to support future research in this area.
Statistikk
"Among the current participants, Iceland, Norway, and Switzerland are not members of the European Union."
"Horror writer Stephen King once visited his friend, Peter Straub, whose house is in Crouch End."
"Progeny is an American science fiction film released in 1999."