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Ricci Flow with Surgery on ThreeManifolds
"... This is a technical paper, which is a continuation of [I]. Here we verify most of the assertions, made in [I, §13]; the exceptions are (1) the statement that a 3manifold which collapses with local lower bound for sectional curvature is a graph manifold this is deferred to a separate paper, as the ..."
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Cited by 448 (2 self)
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constant scalar curvature one, and I has length 2ǫ −1; here ǫclose refers to C N topology, with N> ǫ −1. A parabolic neighborhood P(x, t, ǫ −1 r, r 2) is called a strong ǫneck, if, after scaling with factor r −2, it is ǫclose to the evolving standard neck, which at each
The Determinants of Credit Spread Changes.
 Journal of Finance
, 2001
"... ABSTRACT Using dealer's quotes and transactions prices on straight industrial bonds, we investigate the determinants of credit spread changes. Variables that should in theory determine credit spread changes have rather limited explanatory power. Further, the residuals from this regression are ..."
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Cited by 422 (2 self)
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changes. Below, we investigate the determinants of credit spread changes. From a contingentclaims, or noarbitrage standpoint, credit spreads obtain for two fundamental reasons: 1) there is a risk of default, and 2) in the event of default, the bondholder receives only a portion of the promised payments
A framework for clustering evolving data streams. In:
 Proc of VLDB’03,
, 2003
"... Abstract The clustering problem is a difficult problem for the data stream domain. This is because the large volumes of data arriving in a stream renders most traditional algorithms too inefficient. In recent years, a few onepass clustering algorithms have been developed for the data stream proble ..."
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Cited by 359 (36 self)
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problem. Although such methods address the scalability issues of the clustering problem, they are generally blind to the evolution of the data and do not address the following issues: (1) The quality of the clusters is poor when the data evolves considerably over time. (2) A data stream clustering
Stochastic global optimization
, 2008
"... Stochastic global optimization methods are methods for solving a global optimization problem incorporating probabilistic (stochastic) elements, either in the problem data (the objective function, the constraints, etc.), or in the algorithm itself, or in both. Global optimization is a very important ..."
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Cited by 289 (6 self)
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optimization we refer to the ‘Journal of Global Optimization ’ and two volumes of the ‘Handbook of Global Optimization ’ [1,2]. If the objective function is given as a ‘black box ’ computer code, the optimization problem is especially difficult. Stochastic approaches can often deal with problems of this kind
Coil sensitivity encoding for fast MRI. In:
 Proceedings of the ISMRM 6th Annual Meeting,
, 1998
"... New theoretical and practical concepts are presented for considerably enhancing the performance of magnetic resonance imaging (MRI) by means of arrays of multiple receiver coils. Sensitivity encoding (SENSE) is based on the fact that receiver sensitivity generally has an encoding effect complementa ..."
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Cited by 193 (3 self)
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an imaging experiment using an array of n C receiver coils. Fourier encoding is described by a set of n K sampling positions in kspace. Let the whole object be within the volume of interest (VOI). Then a sample value m obtained from the ␥th coil at the th position in kspace is given by where r denotes 3D
Noncommutative manifolds, the instanton algebra and isospectral deformations
 Comm. Math. Phys
"... We give new examples of noncommutative manifolds that are less standard than the NCtorus or Moyal deformations of R n. They arise naturally from basic considerations of noncommutative differential topology and have nontrivial global features. The new examples include the instanton algebra and the ..."
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Cited by 167 (29 self)
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and the NC4spheres S4 θ. We construct the noncommutative algebras A = C ∞ (S4 θ) of functions on NCspheres as solutions to the vanishing, chj(e) = 0,j < 2, of the Chern character in the cyclic homology of A of an idempotent e ∈ M4(A), e2 = e, e = e ∗. We describe the universal noncommutative space
Information extraction: techniques and challenges
 In Information Extraction (International Summer School SCIE97
, 1997
"... This volume takes a broad view of information extraction as any method for ltering information from large volumes of text. This includes the retrieval of documents from collections and the tagging of particular terms in text. In this paper we shall use a narrower de nition: the identi cation of inst ..."
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Cited by 162 (4 self)
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notion of information extraction described here has received wide currency over the last decade through the series of Message Understanding Conferences [1, 2, 3, 4, 14]. We shall discuss these Conferences in more detail a bit later, and shall use simpli ed versions of
The changing relation between mortality and level of economic development
 Population Studies
, 1975
"... I am honoured that my 1975 article1 was thought worthy of reprinting and delighted that my own longevity curve has shifted far enough to allow me to respond to commentators. They have done an excellent job of placing the article in the context of previous and subsequent work and pointing out its str ..."
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Cited by 157 (1 self)
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strengths and weaknesses. Inevitably, the article is to compared to the work of Thomas McKeown. Although my article and the book that included it2 were published at about the same time as McKeown’s volume,3 McKeown’s thesis was already wellknown through the pages of Population Studies, the same journal
The VLDB Journal c ○ SpringerVerlag 1997 Parametric query optimization
"... Abstract. In most database systems, the values of many important runtime parameters of the system, the data, or the query are unknown at query optimization time. Parametric query optimization attempts to identify at compile time several execution plans, each one of which is optimal for a subset of ..."
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sizes in the same time needed by their conventional versions for a single buffer size, without much sacrifice in the output quality and with essentially zero runtime overhead. 1
Hotspots and mantle plumes: some phenomenology
 J. Geophys. Res
, 1990
"... The available data, mainly topography, geoid, and heat flow, describing hotspots worldwide are examined to constrain the mechanisms for swell uplift and to obtain fluxes and excess temperatures of mantle plumes. Swell uplift is caused mainly by excess temperatures that move with the lithosphere plat ..."
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Cited by 140 (0 self)
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. The buoyancy fluxes of 37 hotspots are estimated; the global buoyancy flux is 50 Mg s1, which is equivalent to a globally averaged surface heat flow of 4 mWm2 from core sources and would cool the core at a rate of 50 ø C b.y.1. Based on a thermal model and the assumption that he likelihood of subduction
Results 1  10
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