3 papers
cs.IR2024
Improved Learned Sparse Retrieval with Corpus-Specific Vocabularies
Puxuan Yu, Antonio Mallia, Matthias Petri
We explore leveraging corpus-specific vocabularies that improve both efficiency and effectiveness of learned sparse retrieval systems. We find that pre-training the underlying BERT…
cs.CL2016
Fast, Small and Exact: Infinite-order Language Modelling with Compressed Suffix Trees
Ehsan Shareghi, Matthias Petri, Gholamreza Haffari +1
Efficient methods for storing and querying are critical for scaling high-order n-gram language models to large corpora. We propose a language model based on compressed suffix trees…
cs.DS2014
Compact Indexes for Flexible Top-k Retrieval
Simon Gog, Matthias Petri
We engineer a self-index based retrieval system capable of rank-safe evaluation of top-k queries. The framework generalizes the GREEDY approach of Culpepper et al. (ESA 2010) to ha…