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NIPS
2004
14 years 11 months ago
Hierarchical Clustering of a Mixture Model
In this paper we propose an efficient algorithm for reducing a large mixture of Gaussians into a smaller mixture while still preserving the component structure of the original mod...
Jacob Goldberger, Sam T. Roweis
TCBB
2008
76views more  TCBB 2008»
14 years 9 months ago
Hadamard Conjugation for the Kimura 3ST Model: Combinatorial Proof Using Path Sets
Under a stochastic model of molecular sequence evolution the probability of each possible pattern of characters is well defined. The Kimura's three-substitution-types (K3ST) m...
Michael D. Hendy, Sagi Snir
INCDM
2007
Springer
121views Data Mining» more  INCDM 2007»
15 years 4 months ago
Collaborative Filtering Using Electrical Resistance Network Models
Abstract. In a recommender system where users rate items we predict the rating of items users have not rated. We define a rating graph containing users and items as vertices and r...
Jérôme Kunegis, Stephan Schmidt
BMCBI
2008
114views more  BMCBI 2008»
14 years 10 months ago
Partial mixture model for tight clustering of gene expression time-course
Background: Tight clustering arose recently from a desire to obtain tighter and potentially more informative clusters in gene expression studies. Scattered genes with relatively l...
Yinyin Yuan, Chang-Tsun Li, Roland Wilson
IJCAI
2001
14 years 11 months ago
A Simple Additive Re-weighting Strategy for Improving Margins
We present a sample re-weighting scheme inspired by recent results in margin theory. The basic idea is to add to the training set replicas of samples which are not classified with...
Fabio Aiolli, Alessandro Sperduti