Odellia Boni, Guy Feigenblat, Guy Lev, Michal Shmueli-Scheuer, Benjamin Sznajder, David Konopnicki
We present HowSumm, a novel large-scale dataset for the task of query-focused multi-document summarization (qMDS), which targets the use-case of generating actionable instructions from a set of sources. This use-case is different from the use-cases covered in existing multi-document summarization (MDS) datasets and is applicable to educational and industrial scenarios. We employed automatic methods, and leveraged statistics from existing human-crafted qMDS datasets, to create HowSumm from wikiHow website articles and the sources they cite. We describe the creation of the dataset and discuss the unique features that distinguish it from other summarization corpora. Automatic and human evaluations of both extractive and abstractive summarization models on the dataset reveal that there is room for improvement.
| Task | Dataset | Metric | Value | Model |
|---|---|---|---|---|
| Text Summarization | HowSumm-Method | ROUGE-1 | 53.5 | LexRank (query: method + article + steps titles) |
| Text Summarization | HowSumm-Method | ROUGE-1 | 52.2 | CES (query: method + article + steps titles) |
| Text Summarization | HowSumm-Method | ROUGE-1 | 48.6 | GreedyRel (query: method + article + steps titles) |
| Text Summarization | HowSumm-Method | ROUGE-1 | 48.4 | CES (query: method title) |
| Text Summarization | HowSumm-Method | ROUGE-1 | 48.3 | CES (query: method + article titles) |
| Text Summarization | HowSumm-Method | ROUGE-1 | 47.7 | LexRank (query: method title) |
| Text Summarization | HowSumm-Method | ROUGE-1 | 47.1 | LexRank (query: method + article titles) |
| Text Summarization | HowSumm-Method | ROUGE-1 | 43.4 | GreedyRel (query: method title) |
| Text Summarization | HowSumm-Method | ROUGE-1 | 42.3 | GreedyRel (query: method + article titles) |
| Text Summarization | HowSumm-Step | ROUGE-1 | 39.6 | LexRank (query: step title) |
| Text Summarization | HowSumm-Step | ROUGE-1 | 39.3 | CES (query: step title) |
| Text Summarization | HowSumm-Step | ROUGE-1 | 38.3 | CES (query: step + method titles) |
| Text Summarization | HowSumm-Step | ROUGE-1 | 38.2 | LexRank (query: step + method titles) |
| Text Summarization | HowSumm-Step | ROUGE-1 | 37 | CES (query: step + method + article titles) |
| Text Summarization | HowSumm-Step | ROUGE-1 | 36.3 | LexRank (query: step + method + article titles) |
| Text Summarization | HowSumm-Step | ROUGE-1 | 30.3 | GreedyRel (query: step + method titles) |
| Text Summarization | HowSumm-Step | ROUGE-1 | 30.1 | GreedyRel (query: step title) |
| Text Summarization | HowSumm-Step | ROUGE-1 | 23 | BM25-HierSumm (query: step + method titles) |
| Text Summarization | HowSumm-Step | ROUGE-1 | 22.3 | BM25-HierSumm (query: step title) |
| Text Summarization | HowSumm-Step | ROUGE-1 | 21.9 | BM25-HierSumm (query: step + method + article titles) |
| Document Summarization | HowSumm-Method | ROUGE-1 | 53.5 | LexRank (query: method + article + steps titles) |
| Document Summarization | HowSumm-Method | ROUGE-1 | 52.2 | CES (query: method + article + steps titles) |
| Document Summarization | HowSumm-Method | ROUGE-1 | 48.6 | GreedyRel (query: method + article + steps titles) |
| Document Summarization | HowSumm-Method | ROUGE-1 | 48.4 | CES (query: method title) |
| Document Summarization | HowSumm-Method | ROUGE-1 | 48.3 | CES (query: method + article titles) |
| Document Summarization | HowSumm-Method | ROUGE-1 | 47.7 | LexRank (query: method title) |
| Document Summarization | HowSumm-Method | ROUGE-1 | 47.1 | LexRank (query: method + article titles) |
| Document Summarization | HowSumm-Method | ROUGE-1 | 43.4 | GreedyRel (query: method title) |
| Document Summarization | HowSumm-Method | ROUGE-1 | 42.3 | GreedyRel (query: method + article titles) |
| Document Summarization | HowSumm-Step | ROUGE-1 | 39.6 | LexRank (query: step title) |
| Document Summarization | HowSumm-Step | ROUGE-1 | 39.3 | CES (query: step title) |
| Document Summarization | HowSumm-Step | ROUGE-1 | 38.3 | CES (query: step + method titles) |
| Document Summarization | HowSumm-Step | ROUGE-1 | 38.2 | LexRank (query: step + method titles) |
| Document Summarization | HowSumm-Step | ROUGE-1 | 37 | CES (query: step + method + article titles) |
| Document Summarization | HowSumm-Step | ROUGE-1 | 36.3 | LexRank (query: step + method + article titles) |
| Document Summarization | HowSumm-Step | ROUGE-1 | 30.3 | GreedyRel (query: step + method titles) |
| Document Summarization | HowSumm-Step | ROUGE-1 | 30.1 | GreedyRel (query: step title) |
| Document Summarization | HowSumm-Step | ROUGE-1 | 23 | BM25-HierSumm (query: step + method titles) |
| Document Summarization | HowSumm-Step | ROUGE-1 | 22.3 | BM25-HierSumm (query: step title) |
| Document Summarization | HowSumm-Step | ROUGE-1 | 21.9 | BM25-HierSumm (query: step + method + article titles) |