Results 1 - 10 of 1,081

Statistical pattern recognition: A review

by Anil K. Jain, Robert P. W. Duin, Jianchang Mao - IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE , 2000
"... The primary goal of pattern recognition is supervised or unsupervised classification. Among the various frameworks in which pattern recognition has been traditionally formulated, the statistical approach has been most intensively studied and used in practice. More recently, neural network techniques ..."
Abstract - Cited by 1035 (30 self) - Add to MetaCart
The primary goal of pattern recognition is supervised or unsupervised classification. Among the various frameworks in which pattern recognition has been traditionally formulated, the statistical approach has been most intensively studied and used in practice. More recently, neural network

A molecular view of microbial diversity and the biosphere. Science 276:734–740

by Norman R. Pace , 1997
"... Over three decades of molecular-phylogenetic studies, researchers have compiled an increasingly robust map of evolutionary diversification showing that the main diversity of life is microbial, distributed among three primary relatedness groups or domains: Archaea, Bacteria, and Eucarya. The general ..."
Abstract - Cited by 341 (10 self) - Add to MetaCart
Over three decades of molecular-phylogenetic studies, researchers have compiled an increasingly robust map of evolutionary diversification showing that the main diversity of life is microbial, distributed among three primary relatedness groups or domains: Archaea, Bacteria, and Eucarya. The general

The Kitty Genovese murder and the social psychology of helping: The parable of the 38 witnesses

by Rachel Manning, Mark Levine, Alan Collins - American Psychologist
"... This paper argues that an iconic event in the history of helping research – the story of the 38 witnesses who remained inactive during the murder of Kitty Genovese – is not supported by the available evidence. Using archive material we show that there is no evidence for the presence of 38 witnesses, ..."
Abstract - Cited by 14 (2 self) - Add to MetaCart
, or that witnesses observed the murder, or that witnesses remained inactive. Drawing a distinction between the robust bystander research tradition and the story of the 38 witnesses, we explore the consequences of the story for the discipline of psychology. We argue that the story itself plays a key role

Parental employment and child cognitive development

by Christopher J. Ruhm, Dan Rosenbaum, Donna Ruane Morrison, Steven Stern, David Wildesin, Seminar Participants - Journal of Human Resources , 2004
"... This study investigates how parental employment affects child cognitive development. The results indicate that maternal labor supply during the first three years of the child's life has a small negative effect on the predicted verbal ability of 3 and 4 year olds and a larger detrimental impact ..."
Abstract - Cited by 200 (5 self) - Add to MetaCart
works long hours or was also employed in the first year. The findings are robust to the inclusion of controls for day care arrangements or paternal employment. There is some indication that early work may be particularly costly for children in “traditional ” two-parent families and the data also hint

An Implementation of a Log-Structured File System for UNIX

by Margo Seltzer, Keith Bostic, Marshall Kirk McKusick, Carl Staelin, Hewlett-packard Laboratories , 1993
"... Research results [ROSE91] demonstrate that a log-structured file system (LFS) offers the potential for dramatically improved write performance, faster recovery time, and faster file creation and deletion than traditional UNIX file systems. This paper presents a redesign and implementation of the Spr ..."
Abstract - Cited by 192 (13 self) - Add to MetaCart
Research results [ROSE91] demonstrate that a log-structured file system (LFS) offers the potential for dramatically improved write performance, faster recovery time, and faster file creation and deletion than traditional UNIX file systems. This paper presents a redesign and implementation

The Digitization of Word-of-Mouth: Promise and Challenges of Online Reputation Systems

by Chrysanthos Dellarocas , 2001
"... Online reputation mechanisms are emerging as a promising alternative to more traditional trust building mechanisms, such as branding and formal contracting, in settings where the latter may be ineffective or prohibitively expensive; a lot of electronic trading communities fall under these categories ..."
Abstract - Cited by 167 (8 self) - Add to MetaCart
Online reputation mechanisms are emerging as a promising alternative to more traditional trust building mechanisms, such as branding and formal contracting, in settings where the latter may be ineffective or prohibitively expensive; a lot of electronic trading communities fall under

Declarative Routing: Extensible Routing with Declarative Queries

by Boon Thau Loo, Joseph M. Hellerstein, Ion Stoica, Raghu Ramakrishnan , 2005
"... The Internet's core routing infrastructure, while arguably robust and efficient, has proven to be difficult to evolve to accommodate the needs of new applications. Prior research on this problem has included new hard-coded routing protocols on the one hand, and fully extensible Active Networks ..."
Abstract - Cited by 133 (45 self) - Add to MetaCart
The Internet's core routing infrastructure, while arguably robust and efficient, has proven to be difficult to evolve to accommodate the needs of new applications. Prior research on this problem has included new hard-coded routing protocols on the one hand, and fully extensible Active

Autonomous Helicopter Control using Reinforcement Learning Policy Search Methods

by J. Andrew Bagnell, Jeff C. Schneider - In International Conference on Robotics and Automation , 2001
"... Many control problems in the robotics field can be cast as Partially Observed Markovian Decision Problems (POMDPs), an optimal control formalism. Finding optimal solutions to such problems in general, however is known to be intractable. It has often been observed that in practice, simple structured ..."
Abstract - Cited by 118 (1 self) - Add to MetaCart
controllers suffice for good sub-optimal control, and recent research in the artificial intelligence community has focused on policy search methods as techniques for finding sub-optimal controllers when such structured controllers do exist. Traditional model-based reinforcement learning algorithms make a

Involvement and persuasion: Tradition versus integration

by Richard E. Petty - Psychological Bulletin , 1990
"... In a recent meta-analysis, Johnson and Eagly (1989) questioned our conceptualization of and evidence for the effects of involvement on persuasion (Petty & Cacioppo, 1979, 1986). In particular, they concluded that (a) what we had termed issue involvement represented two distinct types of involvem ..."
Abstract - Cited by 47 (3 self) - Add to MetaCart
of involvement (outcome- versus value-relevant), (b) each type of involvement had unique effects on persuasion, and (c) outcome involvement effects may be obtained only by 1 group of researchers. We argue that although 2 distinct research traditions of involvement have emerged, our original position that the 2

Portfolio Selection with Robust Estimation

by Victor DeMiguel, Francisco J. Nogales - SUBMITTED TO OPERATIONS RESEARCH , 2007
"... Mean-variance portfolios constructed using the sample mean and covariance matrix of asset returns perform poorly out-of-sample due to estimation error. Moreover, it is commonly accepted that estimation error in the sample mean is much larger than in the sample covariance matrix. For this reason, pra ..."
Abstract - Cited by 34 (1 self) - Add to MetaCart
that fluctuate substantially over time. In this paper, we propose a class of portfolios that have better stability properties than the traditional minimum-variance portfolios. The proposed portfolios are constructed using certain robust estimators and can be computed by solving a single nonlinear program, where
Results 1 - 10 of 1,081