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SIGIR
2008
ACM
13 years 4 months ago
A general optimization framework for smoothing language models on graph structures
Recent work on language models for information retrieval has shown that smoothing language models is crucial for achieving good retrieval performance. Many different effective smo...
Qiaozhu Mei, Duo Zhang, ChengXiang Zhai
ECIR
2011
Springer
12 years 8 months ago
Exploiting Thread Structures to Improve Smoothing of Language Models for Forum Post Retrieval
Due to many unique characteristics of forum data, forum post retrieval is different from traditional document retrieval and web search, raising interesting research questions abou...
Huizhong Duan, Chengxiang Zhai
SIGIR
2004
ACM
13 years 10 months ago
Corpus structure, language models, and ad hoc information retrieval
Most previous work on the recently developed languagemodeling approach to information retrieval focuses on document-specific characteristics, and therefore does not take into acc...
Oren Kurland, Lillian Lee
WAIM
2010
Springer
13 years 2 months ago
HyperGraphDB: A Generalized Graph Database
We present HyperGraphDB, a novel graph database based on generalized hypergraphs where hyperedges can contain other hyperedges. This generalization automatically reifies every ent...
Borislav Iordanov
CIKM
2008
Springer
13 years 6 months ago
A generative retrieval model for structured documents
Structured documents contain elements defined by the author(s) and annotations assigned by other people or processes. Structured documents pose challenges for probabilistic retrie...
Le Zhao, Jamie Callan