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SIGIR
2012
ACM
8 years 2 months ago
Cognos: crowdsourcing search for topic experts in microblogs
Finding topic experts on microblogging sites with millions of users, such as Twitter, is a hard and challenging problem. In this paper, we propose and investigate a new methodolog...
Saptarshi Ghosh, Naveen Kumar Sharma, Fabrí...
SIGIR
2012
ACM
8 years 2 months ago
Predicting quality flaws in user-generated content: the case of wikipedia
The detection and improvement of low-quality information is a key concern in Web applications that are based on user-generated content; a popular example is the online encyclopedi...
Maik Anderka, Benno Stein, Nedim Lipka
SIGIR
2012
ACM
8 years 2 months ago
Ousting ivory tower research: towards a web framework for providing experiments as a service
With its close ties to the Web, the IR community is destined to leverage the dissemination and collaboration capabilities that the Web provides today. Especially with the advent o...
Tim Gollub, Benno Stein, Steven Burrows
SIGIR
2012
ACM
8 years 2 months ago
Robust ranking models via risk-sensitive optimization
Many techniques for improving search result quality have been proposed. Typically, these techniques increase average effectiveness by devising advanced ranking features and/or by...
Lidan Wang, Paul N. Bennett, Kevyn Collins-Thompso...
SIGIR
2012
ACM
8 years 2 months ago
Unsupervised linear score normalization revisited
We give a fresh look into score normalization for merging result-lists, isolating the problem from other components. We focus on three of the simplest, practical, and widelyused l...
Ilya Markov, Avi Arampatzis, Fabio Crestani
SIGIR
2012
ACM
8 years 2 months ago
Inferring missing relevance judgments from crowd workers via probabilistic matrix factorization
In crowdsourced relevance judging, each crowd worker typically judges only a small number of examples, yielding a sparse and imbalanced set of judgments in which relatively few wo...
Hyun Joon Jung, Matthew Lease
SIGIR
2012
ACM
8 years 2 months ago
Friend or frenemy?: predicting signed ties in social networks
Shuang-Hong Yang, Alexander J. Smola, Bo Long, Hon...
SIGIR
2012
ACM
8 years 2 months ago
Explanatory semantic relatedness and explicit spatialization for exploratory search
Exploratory search, in which a user investigates complex concepts, is cumbersome with today’s search engines. We present a new exploratory search approach that generates interac...
Brent Hecht, Samuel Carton, Mahmood Quaderi, Johan...
SIGIR
2012
ACM
8 years 2 months ago
Effect of dynamic pruning safety on learning to rank effectiveness
Craig Macdonald, Nicola Tonellotto, Iadh Ounis
SIGIR
2012
ACM
8 years 2 months ago
Learning to suggest: a machine learning framework for ranking query suggestions
We consider the task of suggesting related queries to users after they issue their initial query to a web search engine. We propose a machine learning approach to learn the probab...
Umut Ozertem, Olivier Chapelle, Pinar Donmez, Emre...
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