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MARUYAMA
August 15, 2018
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Retrieve_rerank_and_rewrite_Soft_template_based_neural_summarization.pdf
MARUYAMA
August 15, 2018
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Transcript
Retrieve, Rerank and Rewrite: Soft Template Based Neural Summarization Ziqiang
Cao, Wenjie Li, Furu Wei, Sujian Li Proceedings of the 56th Annual Meeting of the Association for Computational Linguistics (Volume 1: Long Papers), pp.152-161, 2018 Nagaoka University of Technology Takumi Maruyama Literature review:
Ø template-based approachseq2seq Ø Informativeness, SOTA
Ø template ,
Ø “Seq2seq models tend to lose control sometimes” •
'# ( • '# )" Ø Template based summarization • -% • $+,template !* & Template: [REGION] shares [open/close] [NUMBER] percent [lower/higher]
Ø Soft-template based neural summarization • seq2seqtemplate •
… • Soft-templates
Ø Modules • Retrieve: • Rerank: Retrieve
• Rewrite: Rerank template
Ø Retrieve • Lucene (! ) • (over
3M) ! • "30 https://lucene.apache.org/
ØJointly Rerank and Rewrite • Rerank Bilinear networksaliency
• Rewrite x : , y*: , r : soft-templates (Retrieve ) Actual saliency : s*(r, y*) = ROUGE(r, y*) Saliency :
ØJointly Rerank and Rewrite • Learning
Ø Dataset Gigaword corpus
Ø Rerank -> Rewrite Rerank + Rewrite
Ø Soft-template"& Rondom ' First Retrieve ! $#
Max Retrieve %!$# , ROUGE$# Optimal %! ROUGE$# Rerank Rerank !$#
Ø Linguistic quality evaluation LEN_DIF !$& & &) LESS_3
3*(# & " COPY & & *( ' NEW_NE !$&& +% "
Ø template-based + seq2seq model Ø Soft-templates
,
None
None