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Discovering and Using Implicit Data for Information Retrieval
Contextual Translation Implicit Data Information Retrieval Language Model Missing information Relevance Model
2014/12/18
In real-world information retrieval (IR) tasks, the searched items and/or the users' queries often have implicit information associated with them -- information that describes unspecified aspects of t...
Current information retrieval models are optimized for retrieval with short keyword queries. In contrast, in this dissertation we focus on longer, verbose queries with more complex structure that are ...
Exploring Privacy and Personalization in Information Retrieval Applications
information retrieval personalization privacy web search
2014/12/18
A growing number of information retrieval applications rely on search behavior aggregated over many users. If aggregated data such as search query reformulations is not handled properly, it can allow ...
Query-Time Optimization Techniques for Structured Queries in Information Retrieval
algorithms information retrieval optimization search
2014/12/18
The use of information retrieval (IR) systems is evolving towards larger, more complicated queries. Both the IR industrial and research communities have generated significant evidence indicating that ...
Indexing Proximity-based Dependencies for Information Retrieval
Efficiency Evaluation Information Retrieval Systems
2014/12/18
Research into term dependencies for information retrieval has demonstrated that dependency retrieval models are able to consistently improve retrieval effectiveness over bag-of-words models. However, ...