441 search results - page 72 / 89 » Query expansion using random walk models |
TCOM
2010
13 years 8 months ago
2010
—A unified analytical framework for evaluating the performance of maximal ratio combining (MRC) and orthogonal space-time block coding (OSTBC) over generalized fading channels i...
CLEF
2003
Springer
14 years 3 months ago
2003
Springer
Motivated by the hypothesis that the retrieval performance of a weighting model is independent of the language in which queries and collection are expressed, we compared the retrie...
WSNA
2003
ACM
14 years 3 months ago
2003
ACM
Sensor networks have become an important source of data with numerous applications in monitoring various real-life phenomena as well as industrial applications and traffic contro...
ICMLA
2007
13 years 11 months ago
2007
We apply a new active learning formulation to the problem of learning medical concepts from unstructured text. The new formulation is based on maximizing the mutual information th...
SIGMOD
1993
ACM
14 years 1 months ago
1993
ACM
The traditional focus of relational query optimization schemes has been on the choice of join methods and join orders. Restrictions have typically been handled in query optimizers ...