Results 1 - 10 of 1,346

Semi-supervised support vector machines

by Kristin P. Bennett, Ayhan Demiriz - In Proc. NIPS , 1998
"... We introduce a semi-supervised support vector machine (S3yM) method. Given a training set of labeled data and a working set of unlabeled data, S3YM constructs a support vector machine us-ing both the training and working sets. We use S3YM to solve the transduction problem using overall risk minimiza ..."
Abstract - Cited by 223 (6 self) - Add to MetaCart
We introduce a semi-supervised support vector machine (S3yM) method. Given a training set of labeled data and a working set of unlabeled data, S3YM constructs a support vector machine us-ing both the training and working sets. We use S3YM to solve the transduction problem using overall risk

Whom You Know Matters: Venture Capital Networks and Investment Performance,

by Yael Hochberg , Alexander Ljungqvist , Yang Lu , Steve Drucker , Jan Eberly , Eric Green , Yaniv Grinstein , Josh Lerner , Laura Lindsey , Max Maksimovic , Roni Michaely , Maureen O'hara , Ludo Phalippou Mitch Petersen , Jesper Sorensen , Per Strömberg Morten Sorensen , Yael Hochberg , Johnson - Journal of Finance , 2007
"... Abstract Many financial markets are characterized by strong relationships and networks, rather than arm's-length, spot-market transactions. We examine the performance consequences of this organizational choice in the context of relationships established when VCs syndicate portfolio company inv ..."
Abstract - Cited by 138 (8 self) - Add to MetaCart
Capital, Networks, Syndication, Investment Performance JEL classification: G24, L14. Networks are widespread in many financial markets. Bulge-bracket investment banks, for instance, have strong relationships with institutional investors which they make use of when pricing and distributing corporate

Analyzing the Risk of Investment in the Construction Industry of

by Samuel Kwadwo Frimpong, Osei Ohene Kwasi
"... This study was undertaken to examine the risk associated to Construction projects investment in Ghana and the relationship between risk and investment in the construction industry of Ghana with more attention and focus on international joint ventures.. To accomplish the objectives of the study, inve ..."
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This study was undertaken to examine the risk associated to Construction projects investment in Ghana and the relationship between risk and investment in the construction industry of Ghana with more attention and focus on international joint ventures.. To accomplish the objectives of the study

On the Investment Benefit and Risk Assessment of Resettlement Housing Construction

by Yi Chong Xu
"... Abstract. With the development of economy and the progress of society, the quality requirements of resettlement housing are increasing, which has brought great challenges to the resettlement housing construction. How to control the cost while ensuring the quality has become a concern of enterprises. ..."
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Abstract. With the development of economy and the progress of society, the quality requirements of resettlement housing are increasing, which has brought great challenges to the resettlement housing construction. How to control the cost while ensuring the quality has become a concern of enterprises

Portfolio Construction with Downside Risk

by Harald Lohre, Thorsten Neumann, Thomas Winterfeldt , 2007
"... ∗We are grateful to Isabelle Bajeux-Besnainou, Didier Maillard and the seminar participants at the FMA 2007 Conference in Barcelona for helpful comments and suggestions. Note that this paper expresses the authors ’ views that do not have to coincide with those of Union Investment or HSH Investment M ..."
Abstract - Cited by 3 (0 self) - Add to MetaCart
Management S.A.. †Correspondence Information: Union Investment Institutional GmbH, Quantitative Strategies and Risk Re-

Market Timing Ability and Volatility Implied by Investment Newsletters’ Asset Allocation Recommendations

by John R. Graham, Campbell R. Harvey - Journal of Financial Economics , 1996
"... We analyze the advice contained in a sample of 237 investment letters over the 1980-1992 period. Each newsletter recommends a mix of equity and cash. We construct portfolios based on these recommendations and find that only a small number of the newsletters appear to have higher average returns than ..."
Abstract - Cited by 76 (2 self) - Add to MetaCart
We analyze the advice contained in a sample of 237 investment letters over the 1980-1992 period. Each newsletter recommends a mix of equity and cash. We construct portfolios based on these recommendations and find that only a small number of the newsletters appear to have higher average returns

Deka Investment GmbH

by Harald Lohre, Heiko Opfer, Gábor Ország, Deka Investment Gmbh , 2011
"... Striving for maximum diversification we follow Meucci (2009) in measuring and managing a multi-asset class portfolio. Under this paradigm the maximum diversification portfolio is equivalent to a risk parity strategy with respect to the uncorrelated risk sources embedded in the underlying portfolio a ..."
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parity strategy to be quite meaningful when benchmarked against these alternatives. Keywords: Risk-based Asset Allocation, Risk Parity, Diversification, Entropy JEL Classification: G11; D81Diversification pays. This insight is at the heart of most portfolio construction paradigms like the seminal one

Longer-term effects of Head Start

by Eliana Garces , Duncan Thomas , Janet Currie Ucla , Nber - American Economic Review , 2002
"... Abstract Public early intervention programs like Head Start are often justified as investments in children. Yet nothing is known about the long-term effects of Head Start. This paper draws on unique data from the Panel Study of Income Dynamics to provide new evidence on the effects of Head Start on ..."
Abstract - Cited by 131 (5 self) - Add to MetaCart
Abstract Public early intervention programs like Head Start are often justified as investments in children. Yet nothing is known about the long-term effects of Head Start. This paper draws on unique data from the Panel Study of Income Dynamics to provide new evidence on the effects of Head Start

Constructing and testing a framework for dynamic risk assessment Sexual Abuse: A

by David Thornton - Journal of Research and Treatment , 2002
"... This paper describes the construction and testing of a framework for dynamic risk assessment. A review of previous studies identified 4 domains into which dynamic risk factors for sexual offending seem to fall. These were sexual interests, distorted attitudes, socioaffective functioning, and self-ma ..."
Abstract - Cited by 49 (7 self) - Add to MetaCart
This paper describes the construction and testing of a framework for dynamic risk assessment. A review of previous studies identified 4 domains into which dynamic risk factors for sexual offending seem to fall. These were sexual interests, distorted attitudes, socioaffective functioning, and self

The relative value of labeled and unlabeled samples in pattern recognition in the regular parametric case,” in preparation

by Vittorio Castelli, Thomas M Cover , 1994
"... Abstract- W e observe a training set Q composed of 1 la-beled samples {(X,,O1),..., (Xl, O,)} and u unlabeled samples {Xi,.., Xg}. The labels 0, are independent random variables satisfying Pr (0, = 1) = 7, Pr (0, = Z} = 1- p. The labeled observat ions X; are independent ly distributed with co ..."
Abstract - Cited by 112 (0 self) - Add to MetaCart
(.) and g2 (.) = f2 (.) or if the opposite holds, nor do we know 7. Thus the learning problem consists of both estimating the opt imum partition of the observat ion space and assigning the classifications to the decision regions. Here, we show that labeled samples are necessary to construct a
Results 1 - 10 of 1,346