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PAKDD
2009
ACM
124views Data Mining» more  PAKDD 2009»
16 years 1 months ago
Dynamic Exponential Family Matrix Factorization
Abstract. We propose a new approach to modeling time-varying relational data such as e-mail transactions based on a dynamic extension of matrix factorization. To estimate effectiv...
Kohei Hayashi, Junichiro Hirayama, Shin Ishii
TACAS
2009
Springer
106views Algorithms» more  TACAS 2009»
16 years 1 months ago
Hierarchical Set Decision Diagrams and Regular Models
Abstract. This paper presents algorithms and data structures that exploit a compositional and hierarchical specification to enable more efficient symbolic modelchecking. We encod...
Yann Thierry-Mieg, Denis Poitrenaud, Alexandre Ham...
ICASSP
2009
IEEE
16 years 1 months ago
Quadtree structured restoration algorithms for piecewise polynomial images
Iterative shrinkage of sparse and redundant representations are at the heart of many state of the art denoising and deconvolution algorithms. They assume the signal is well approx...
Adam Scholefield, Pier Luigi Dragotti
ICASSP
2009
IEEE
16 years 1 months ago
LSH banding for large-scale retrieval with memory and recall constraints
Locality Sensitive Hashing (LSH) is widely used for efficient retrieval of candidate matches in very large audio, video, and image systems. However, extremely large reference dat...
Michele Covell, Shumeet Baluja
ICASSP
2009
IEEE
16 years 1 months ago
Color image feature extraction using color index local auto-correlations
In this paper, we propose a method for extracting color image features, called color index local auto-correlations. Pixel color is quantized and described sparsely in a manner sim...
Takumi Kobayashi, Nobuyuki Otsu