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SIGIR
2002
ACM
15 years 1 months ago
Two-stage language models for information retrieval
The optimal settings of retrieval parameters often depend on both the document collection and the query, and are usually found through empirical tuning. In this paper, we propose ...
ChengXiang Zhai, John D. Lafferty
UMUAI
1998
157views more  UMUAI 1998»
15 years 1 months ago
Bayesian Models for Keyhole Plan Recognition in an Adventure Game
We present an approach to keyhole plan recognition which uses a dynamic belief (Bayesian) network to represent features of the domain that are needed to identify users’ plans and...
David W. Albrecht, Ingrid Zukerman, Ann E. Nichols...
TIT
2002
101views more  TIT 2002»
15 years 1 months ago
Spectrally efficient noncoherent communication
This paper considers noncoherent communication over a frequency-nonselective channel in which the time-varying channel gain is unknown a priori, but is approximately constant over ...
Dilip Warrier, Upamanyu Madhow
TVCG
2002
135views more  TVCG 2002»
15 years 1 months ago
Three-Dimensional Interfaces for Querying by Example in Content-Based Image Retrieval
Image databases are nowadays widely exploited in a number of different contexts, ranging from history of art, through medicine, to education. Existing querying paradigms are based ...
Jürgen Assfalg, Alberto Del Bimbo, Pietro Pal...
PAMI
2007
161views more  PAMI 2007»
15 years 26 days ago
Silhouette Coherence for Camera Calibration under Circular Motion
We present a new approach to camera calibration as a part of a complete and practical system to recover digital copies of sculpture from uncalibrated image sequences taken under t...
Carlos Hernández, Francis Schmitt, Roberto ...