Results 1 - 10 of 152,581

Previous study,

by H. Knoche, J. Mccarthy, M. A. Sasse
"... Mobile TV services are available in an increasing number of countries. For cost reasons, most of these services offer TV material directly recoded for mobile consumption (i.e. without additional editing). This paper reports the findings of a study on the influence of text legibil-ity and quality on ..."
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quality gains when considering text delivery sepa-rately from the video stream and in the development of more accurate multimedia quality models. Background Previous research showed a strong influence of text legibility on overall video quality [1]. Aim of study Assess the contribution of text quality

Previous studies.....

by Clayton M, Donald P. Hodel, Robert C. Horton, Director Preface
"... October 21, 1976) requires the U.S. Geological Survey and U.S. Bureau of Mines to conduct mineral surveys on U.S. Bureau of Land Management administered land designated as Wilderness Study Areas "... to determine the mineral values, if any, that may be present...." Results must be made ava ..."
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October 21, 1976) requires the U.S. Geological Survey and U.S. Bureau of Mines to conduct mineral surveys on U.S. Bureau of Land Management administered land designated as Wilderness Study Areas "... to determine the mineral values, if any, that may be present...." Results must be made

Previous studies

by Terry J. Close, Donald P. Hodel, Robert C. Horton, Director Preface
"... Mines to conduct mineral surveys on U.S. Bureau of Land Management administered lands designated as Wi lderness Study Areas II •• • to determine the mineral values, if any, that may be present ••.. 11 Results must be made available to the public and be submitted to the President and the Congress. Th ..."
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Mines to conduct mineral surveys on U.S. Bureau of Land Management administered lands designated as Wi lderness Study Areas II •• • to determine the mineral values, if any, that may be present ••.. 11 Results must be made available to the public and be submitted to the President and the Congress

What Do We Know about Capital Structure? Some Evidence from International Data

by Raghuram G. Rajan, Luigi Zingales, James Seward - Journal of Finance , 1995
"... We investigate the determinants of capital structure choice by analyzing the financing decisions of public firms in the major industrialized countries. At an aggregate level, firm leverage is fairly similar across the G-7 countries. We find that factors identified by previous studies as correlated i ..."
Abstract - Cited by 1027 (15 self) - Add to MetaCart
We investigate the determinants of capital structure choice by analyzing the financing decisions of public firms in the major industrialized countries. At an aggregate level, firm leverage is fairly similar across the G-7 countries. We find that factors identified by previous studies as correlated

Ensemble Methods in Machine Learning

by Thomas G. Dietterich - MULTIPLE CLASSIFIER SYSTEMS, LBCS-1857 , 2000
"... Ensemble methods are learning algorithms that construct a set of classifiers and then classify new data points by taking a (weighted) vote of their predictions. The original ensemble method is Bayesian averaging, but more recent algorithms include error-correcting output coding, Bagging, and boostin ..."
Abstract - Cited by 625 (3 self) - Add to MetaCart
, and boosting. This paper reviews these methods and explains why ensembles can often perform better than any single classifier. Some previous studies comparing ensemble methods are reviewed, and some new experiments are presented to uncover the reasons that Adaboost does not overfit rapidly.

The Theory of Hybrid Automata

by Thomas A. Henzinger , 1996
"... A hybrid automaton is a formal model for a mixed discrete-continuous system. We classify hybrid automata acoording to what questions about their behavior can be answered algorithmically. The classification reveals structure on mixed discrete-continuous state spaces that was previously studied on pur ..."
Abstract - Cited by 685 (12 self) - Add to MetaCart
A hybrid automaton is a formal model for a mixed discrete-continuous system. We classify hybrid automata acoording to what questions about their behavior can be answered algorithmically. The classification reveals structure on mixed discrete-continuous state spaces that was previously studied

How practical is network coding?

by Mea Wang, Baochun Li , 2006
"... With network coding, intermediate nodes between the source and the receivers of an end-to-end communication session are not only capable of relaying and replicating data messages, but also of coding incoming messages to produce coded outgoing ones. Recent studies have shown that network coding is ..."
Abstract - Cited by 1016 (23 self) - Add to MetaCart
layer. We present our observations based on an extensive series of experiments, draw conclusions from a wide range of scenarios, and are more cautious and less optimistic as compared to previous studies.

Some Evidence on the Importance of Sticky Prices

by Mark Bils, Peter J. Klenow - JOURNAL OF POLITICAL ECONOMY , 2004
"... We examine the frequency of price changes for 350 categories of goods and services covering about 70 % of consumer spending, based on unpublished data from the BLS for 1995 to 1997. Compared with previous studies we find much more frequent price changes, with half of goods' prices lasting less ..."
Abstract - Cited by 741 (15 self) - Add to MetaCart
We examine the frequency of price changes for 350 categories of goods and services covering about 70 % of consumer spending, based on unpublished data from the BLS for 1995 to 1997. Compared with previous studies we find much more frequent price changes, with half of goods' prices lasting less

On the algorithmic implementation of multi-class kernel-based vector machines

by Koby Crammer, Yoram Singer, Nello Cristianini, John Shawe-taylor, Bob Williamson - Journal of Machine Learning Research
"... In this paper we describe the algorithmic implementation of multiclass kernel-based vector machines. Our starting point is a generalized notion of the margin to multiclass problems. Using this notion we cast multiclass categorization problems as a constrained optimization problem with a quadratic ob ..."
Abstract - Cited by 559 (13 self) - Add to MetaCart
significant running time improvements for large datasets. Finally, we describe various experiments with our approach comparing it to previously studied kernel-based methods. Our experiments indicate that for multiclass problems we attain state-of-the-art accuracy.

Network information flow

by Rudolf Ahlswede, Ning Cai, Shuo-Yen Robert Li, Raymond W. Yeung - IEEE TRANS. INFORM. THEORY , 2000
"... We introduce a new class of problems called network information flow which is inspired by computer network applications. Consider a point-to-point communication network on which a number of information sources are to be mulitcast to certain sets of destinations. We assume that the information source ..."
Abstract - Cited by 1967 (24 self) - Add to MetaCart
sources are mutually independent. The problem is to characterize the admissible coding rate region. This model subsumes all previously studied models along the same line. In this paper, we study the problem with one information source, and we have obtained a simple characterization of the admissible
Results 1 - 10 of 152,581