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MetaCost: A General Method for Making Classifiers CostSensitive
 In Proceedings of the Fifth International Conference on Knowledge Discovery and Data Mining
, 1999
"... Research in machine learning, statistics and related fields has produced a wide variety of algorithms for classification. However, most of these algorithms assume that all errors have the same cost, which is seldom the case in KDD prob lems. Individually making each classification learner costsensi ..."
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Cited by 415 (4 self)
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costsensitive is laborious, and often nontrivial. In this paper we propose a principled method for making an arbitrary classifier costsensitive by wrapping a costminimizing procedure around it. This procedure, called MetaCost, treats the underlying classifier as a black box, requiring no knowledge of its
Resource allocation and crosslayer control in wireless networks
 Foundations and Trends in Networking
, 2006
"... Information flow in a telecommunication network is accomplished through the interaction of mechanisms at various design layers with the end goal of supporting the information exchange needs of the applications. In wireless networks in particular, the different layers interact in a nontrivial manner ..."
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Cited by 276 (59 self)
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Information flow in a telecommunication network is accomplished through the interaction of mechanisms at various design layers with the end goal of supporting the information exchange needs of the applications. In wireless networks in particular, the different layers interact in a nontrivial manner
The Magnitude of Menu Costs: Direct Evidence From Large U.S. Supermarket Chains
 QUARTERLY JOURNAL OF ECONOMICS
, 1997
"... We use storelevel data to document the exact process of changing prices and to directly measure menu costs at five multistore supermarket chains. We show that changing prices in these establishments is a complex process, requiring dozens of steps and a nontrivial amount of resources. The menu costs ..."
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Cited by 214 (28 self)
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We use storelevel data to document the exact process of changing prices and to directly measure menu costs at five multistore supermarket chains. We show that changing prices in these establishments is a complex process, requiring dozens of steps and a nontrivial amount of resources. The menu
Ruled surfaces with nontrivial surjective endomorphisms
 Kyushu J. Math
"... Abstract. Let X be a nonsingular ruled surface over an algebraically closed field of characteristic zero.There is a nontrivial surjective endomorphism f: X → X if and only if X is (1) a toric surface, (2) a relatively minimal elliptic ruled surface, or (3) a relatively minimal ruled surface of irr ..."
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Cited by 25 (5 self)
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Abstract. Let X be a nonsingular ruled surface over an algebraically closed field of characteristic zero.There is a nontrivial surjective endomorphism f: X → X if and only if X is (1) a toric surface, (2) a relatively minimal elliptic ruled surface, or (3) a relatively minimal ruled surface
Nontrivial solutions for asymptotically linear variational inequalities
 Methods Nonlinear Anal
, 1996
"... The aim of this paper is to extend to variational inequalities a result of Amann and Zehnder’s, refined by Chang (see [1, 6, 14]), concerning the existence of nontrivial solutions for a semilinear elliptic boundary value problem, when the nonlinearity is asymptotically linear, is zero at zero and it ..."
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Cited by 2 (1 self)
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The aim of this paper is to extend to variational inequalities a result of Amann and Zehnder’s, refined by Chang (see [1, 6, 14]), concerning the existence of nontrivial solutions for a semilinear elliptic boundary value problem, when the nonlinearity is asymptotically linear, is zero at zero
Feedbackdirected random test generation
 In ICSE
, 2007
"... We present a technique that improves random test generation by incorporating feedback obtained from executing test inputs as they are created. Our technique builds inputs incrementally by randomly selecting a method call to apply and finding arguments from among previouslyconstructed inputs. As soo ..."
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Cited by 188 (17 self)
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for the classes under test. Passing tests can be used to ensure that code contracts are preserved across program changes; failing tests (that violate one or more contract) point to potential errors that should be corrected. Our experimental results indicate that feedbackdirected random test generation can
Nontrivial Soliton Scattering in Planar Integrable Systems
, 2003
"... The behavior of solitons in integrable theories is strongly constrained by the integrability of the theory, that is by the existence of an infinite number of conserved quantities that these theories are known to possess. As a result the soliton scattering of such theories are expected to be trivial ..."
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(with no change of direction, velocity or shape). In this paper we present an extended review on soliton scattering of two spatial dimensional integrable systems which have been derived as dimensional reductions of the selfdual YangMillsHiggs equations and whose scattering properties are highly nontrivial
The nontrivial random walk of stock prices
 European Journal of Physics, B
"... We investigate the random walk of prices by developing a simple model relating the properties of the signs and absolute values of individual price changes to the diffusion rate (volatility) of prices at longer time scales. We find that for one hour intervals this model consistently overpredicts th ..."
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Cited by 1 (1 self)
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We investigate the random walk of prices by developing a simple model relating the properties of the signs and absolute values of individual price changes to the diffusion rate (volatility) of prices at longer time scales. We find that for one hour intervals this model consistently over
NonTrivial Solutions to the NPerson Prisoners ’ Dilemma
"... We have developed a new agentbased simulation tool to model social dilemmas for the case of a large number of not necessarily rational decisionmakers (Szilagyi and Szilagyi, 2000). The combination of various personalities with stochastic learning makes it possible to simulate the multiperson Pris ..."
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person Prisoners ’ Dilemma game for realistic situations. A variety of personality profiles and their arbitrary combinations can be represented, including agents whose probability of cooperation changes by an amount proportional to its reward from the environment. For the case of such agents the game has nontrivial
Results 1  10
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