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TREC
2008
15 years 6 months ago
Document and Query Expansion Models for Blog Distillation
This paper presents the CMU submission to the 2008 TREC blog distillation track. Similar to last year's experiments, we evaluate different retrieval models and apply a query ...
Jaime Arguello, Jonathan L. Elsas, Changkuk Yoo, J...
SAC
2008
ACM
15 years 4 months ago
Aggregation languages for moving object and places of interest
We address aggregate queries over GIS data and moving object data, where non-spatial information is stored in a data warehouse. We propose a formal data model and query language t...
Leticia I. Gómez, Bart Kuijpers, Alejandro ...
ACMSE
2005
ACM
15 years 10 months ago
Metadata management and relational databases
A simple extension to the relational model that permits metadata (more generally metaknowledge) to be stored and manipulated as first class data is proposed. The accompanying que...
Shun Yan Cheung, James J. Lu, Catharine M. Wyss
117
Voted
SIGIR
2006
ACM
15 years 11 months ago
Lightening the load of document smoothing for better language modeling retrieval
We hypothesized that language modeling retrieval would improve if we reduced the need for document smoothing to provide an inverse document frequency (IDF) like effect. We create...
Mark D. Smucker, James Allan
DEXA
2005
Springer
118views Database» more  DEXA 2005»
15 years 10 months ago
Detecting Semantically Correct Changes to Relevant Unordered Hidden Web Data
Current proposals for XML change detection use structural constraints to detect the changes and they ignore semantic constraints. Consequently, they may produce semantically incorr...
Vladimir Kovalev, Sourav S. Bhowmick