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BIRTHDAY
2010
Springer
15 years 7 months ago
Fixed-Point Definability and Polynomial Time on Chordal Graphs and Line Graphs
The question of whether there is a logic that captures polynomial time was formulated by Yuri Gurevich in 1988. It is still wide open and regarded as one of the main open problems...
Martin Grohe
TR
2011
172views more  TR 2011»
15 years 1 months ago
Multi-State Reliability Systems Under Discrete Time Semi-Markovian Hypothesis
We consider repairable reliability systems with m components, the lifetimes and repair times of which are independent. The l-th component can be either in the failure state 0 or i...
Ourania Chryssaphinou, Nikolaos Limnios, Sonia Mal...
ISNN
2011
Springer
14 years 9 months ago
Orthogonal Feature Learning for Time Series Clustering
This paper presents a new method that uses orthogonalized features for time series clustering and classification. To cluster or classify time series data, either original data or...
Xiaozhe Wang, Leo Lopes
DBA
2006
236views Database» more  DBA 2006»
15 years 8 months ago
Quantizing Time Series for Efficient Subsequence Matching
Indexing time series data is an interesting problem that has attracted much interest in the research community for the last decade. Traditional indexing methods organize the data ...
Inés Fernando Vega López, Bongki Moo...
FOCS
2008
IEEE
15 years 6 months ago
Market Equilibria in Polynomial Time for Fixed Number of Goods or Agents
We consider markets in the classical Arrow-Debreu model. There are n agents and m goods. Each buyer has a concave utility function (of the bundle of goods he/she buys) and an init...
Nikhil R. Devanur, Ravi Kannan