Haggai Roitman

Unsupervised Query-Focused Multi-Document Summarization using the Cross Entropy Method

2017

We present a novel unsupervised query-focused multi-document summarization approach. To this end, we generate a summary by extracting a subset of sentences using the Cross-Entropy (CE) Method. The proposed approach is generic and requires no …

Robust Standard Deviation Estimation for Query Performance Prediction

2017

We derive a robust standard deviation estimator for post-retrieval query performance prediction. To this end, we propose a novel bootstrap sampling approach which is inspired by user search behavior. Using an evaluation with several TREC …