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WSDM
2012
ACM
325views Data Mining» more  WSDM 2012»
12 years 6 months ago
Correlating financial time series with micro-blogging activity
We study the problem of correlating micro-blogging activity with stock-market events, defined as changes in the price and traded volume of stocks. Specifically, we collect messa...
Eduardo J. Ruiz, Vagelis Hristidis, Carlos Castill...
JMLR
2012
12 years 1 months ago
Beyond Logarithmic Bounds in Online Learning
We prove logarithmic regret bounds that depend on the loss L∗ T of the competitor rather than on the number T of time steps. In the general online convex optimization setting, o...
Francesco Orabona, Nicolò Cesa-Bianchi, Cla...
AAAI
2012
12 years 1 months ago
Computing the Nucleolus of Matching, Cover and Clique Games
In cooperative games, a key question is to find a division of payoffs to coalition members in a fair manner. Nucleolus is one of such solution concepts that provides a stable sol...
Ning Chen, Pinyan Lu, Hongyang Zhang
CORR
2011
Springer
150views Education» more  CORR 2011»
13 years 5 months ago
Asymptotic Enumeration of Non-crossing Partitions on Surfaces
We generalize the notion of non-crossing partition on a disk to general surfaces with boundary. For this, we consider a surface Σ and introduce the number CΣ(n) of noncrossing pa...
Juanjo Rué, Ignasi Sau, Dimitrios M. Thilik...
COMPGEOM
2006
ACM
14 years 4 months ago
Random triangulations of planar point sets
Let S be a finite set of n + 3 points in general position in the plane, with 3 extreme points and n interior points. We consider triangulations drawn uniformly at random from the...
Micha Sharir, Emo Welzl