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CIKM
2010
Springer
13 years 7 months ago
Ranking under temporal constraints
This paper introduces the notion of temporally constrained ranked retrieval, which, given a query and a time constraint, produces the best possible ranked list within the specifi...
Lidan Wang, Donald Metzler, Jimmy Lin
SIGIR
2009
ACM
14 years 3 months ago
A relevance-based topic model for news event tracking
Event tracking is the task of discovering temporal patterns of popular events from text streams. Existing approaches for event tracking have two limitations: scalability and inabi...
Viet Ha-Thuc, Yelena Mejova, Christopher Harris, P...
ER
2004
Springer
92views Database» more  ER 2004»
14 years 2 months ago
XBiT: An XML-Based Bitemporal Data Model
Abstract. Past research work on modeling and managing temporal information has, so far, failed to elicit support in commercial database systems. The increasing popularity of XML o...
Fusheng Wang, Carlo Zaniolo
ECIR
1998
Springer
13 years 10 months ago
Coupled Hierarchical IR and Stochastic Models for Surface Information Extraction
We present in this paper a combination of Machine Learning based Information Retrieval (IR) techniques and stochastic language modelling in a hierarchical system that extracts sur...
Hugo Zaragoza, Patrick Gallinari
MODELS
2009
Springer
14 years 3 months ago
Limitations of Automating Model Migration in Response to Metamodel Adaptation
In consequence of changing requirements and technological progress, modeling languages are subject to change. When their metamodels are adapted to reflect those changes, existing ...
Markus Herrmannsdoerfer, Daniel Ratiu