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TAMC
2007
Springer
14 years 4 months ago
A Characterization of the Language Classes Learnable with Correction Queries
Abstract. Formal language learning models have been widely investigated in the last four decades. But it was not until recently that the model of learning from corrections was intr...
Cristina Tîrnauca, Satoshi Kobayashi
DMSN
2007
ACM
14 years 1 months ago
Declarative temporal data models for sensor-driven query processing
Many sensor network applications monitor continuous phenomena by sampling, and fit time-varying models that capture the phenomena's behaviors. We introduce Pulse, a framework...
Yanif Ahmad, Ugur Çetintemel
PODS
2010
ACM
205views Database» more  PODS 2010»
14 years 3 months ago
Positive higher-order queries
We investigate a higher-order query language that embeds operators of the positive relational algebra within the simply-typed λ-calculus. Our language allows one to succinctly de...
Michael Benedikt, Gabriele Puppis, Huy Vu
WSDM
2012
ACM
236views Data Mining» more  WSDM 2012»
12 years 5 months ago
Effective query formulation with multiple information sources
Most standard information retrieval models use a single source of information (e.g., the retrieval corpus) for query formulation tasks such as term and phrase weighting and query ...
Michael Bendersky, Donald Metzler, W. Bruce Croft
SIGIR
2008
ACM
13 years 9 months ago
Query-drift prevention for robust query expansion
Pseudo-feedback-based automatic query expansion yields effective retrieval performance on average, but results in performance inferior to that of using the original query for many...
Liron Zighelnic, Oren Kurland