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Atlas de l'IA

Résumé de texte

Condenser un long texte en une version plus courte et fidèle

Langage et connaissancesDébutant #04
entréeTexteTexte

Le texte intégral est présenté en anglais ; le titre et le résumé sont localisés.

CE QUE DÉSIGNE CETTE CAPACITÉ

Takes a long document and returns a shorter version that keeps the key information. It splits into extractive (selecting sentences) and abstractive (rewriting in new words) styles, the latter now dominant. Unlike free generation it has an explicit compression target, and unlike question answering it is not aimed at one query but should cover the whole thread.

Comment c'est fait

The classic approach is a sequence-to-sequence attention model producing abstractive summaries, with rewriting ability coming from large-scale pre-training. Long documents are usually handled hierarchically or by a map-reduce scheme that summarises chunks and then combines them. Controlled summarisation passes length, angle or audience constraints through the prompt or light fine-tuning to steer style.

Produits représentatifs

8

Organisations concernées

Usages typiques

  • Quick reads of news and reports
  • Meeting and call minutes
  • Literature triage and paper skims
  • Rolling summaries of tickets and email

Comment on l'évalue

ROUGE
N-gram overlap with reference summaries
BERTScore
Semantic-embedding similarity, more tolerant than literal overlap
Factual consistency
Share of statements conflicting with the source, as in FactCC-style evaluation

Limites et points difficiles

  • Middle sections of long documents are often dropped; models favour the start and end
  • Abstractive models splice facts from different sentences into claims the source never made
  • On ambiguous or multi-sided texts, minority views are often reported as the majority

Concepts sous-jacents