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ACMACE
2007
ACM
13 years 11 months ago
An experimental setting to measure contextual perception of embodied conversational agents
We introduce an experimental setting to observe and measure the perception of facial expression performed by embodied conversational agents (ECAs). The experimental set-up enables...
Michael Lankes, Regina Bernhaupt, Manfred Tschelig...
CIKM
2007
Springer
13 years 11 months ago
Improve retrieval accuracy for difficult queries using negative feedback
How to improve search accuracy for difficult topics is an underaddressed, yet important research question. In this paper, we consider a scenario when the search results are so poo...
Xuanhui Wang, Hui Fang, ChengXiang Zhai
SIGIR
2010
ACM
13 years 11 months ago
Reusable test collections through experimental design
Portable, reusable test collections are a vital part of research and development in information retrieval. Reusability is difficult to assess, however. The standard approach— si...
Ben Carterette, Evangelos Kanoulas, Virgiliu Pavlu...
SIGIR
2010
ACM
13 years 11 months ago
On statistical analysis and optimization of information retrieval effectiveness metrics
This paper presents a new way of thinking for IR metric optimization. It is argued that the optimal ranking problem should be factorized into two distinct yet interrelated stages:...
Jun Wang, Jianhan Zhu
DOCENG
2009
ACM
13 years 11 months ago
Review of automatic document formatting
We review the literature on automatic document formatting with an emphasis on recent work in the field. One common way to frame document formatting is as a constrained optimizatio...
Nathan Hurst, Wilmot Li, Kim Marriott