Sun, 27 Jul 2008 10:21:49 BST CiteULike: pdlug estimation http://www.citeulike.org/user/pdlug/tag/estimation CiteULike.org en-gb Copyright © 2004-2008 citeulike.org http://www.citeulike.org/user/pdlug/article/2719492 <i>Social Science Research Network Working Paper Series</i><br /><br />This study empirically investigates factors that influence overoptimism across nascent entrepreneurs. We distinguish between two main groups of determinants (information, motivation) and three types of overoptimism (income, psychological burden, leisure time). Findings indicate that entrepreneurs who have relevant business information are more realistic and that entrepreneurs with a high level of general knowledge, acquired through education or previous (unrelated) entrepreneurial experience, are more overoptimistic. External advice and business planning do not appear to limit subsequent overoptimism. Entrepreneurs are less overoptimistic about the pecuniary or non-pecuniary benefits of self-employment when these benefits are closely related to the initial motivation for starting up the business. Overoptimism Among Founders: The Role of Information and Motivation I Verheul Martin Carree Social Science Research Network Working Paper Series 2008-04-25T21:14:47-00:00 Social Science Research Network Working Paper Series behaviour business economics estimation startup http://www.citeulike.org/user/pdlug/article/625999 <i></i><br /><br />In this paper we show how to formulate and solve robust portfolio selection problems. The objective of these robust formulations is to systematically combat the sensitivity of the optimal portfolio to statistical and modeling errors in the estimates of the relevant market parameters. We introduce "uncertainty structures" for the market parameters and show that the robust portfolio selection problems corresponding to these uncertainty structures can be reformulated as second-order cone programs... Robust portfolio selection problems G Iyengar D Goldfarb 2006-05-13T09:26:08-00:00 estimation finance math mathematics optimization portfolio robust statistics