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101.
Hybrid Choice Models: Progress and Challenges 总被引:2,自引:1,他引:1
Ben-Akiva Moshe Mcfadden Daniel Train Kenneth Walker Joan Bhat Chandra Bierlaire Michel Bolduc Denis Boersch-Supan Axel Brownstone David Bunch David S. Daly Andrew De Palma Andre Gopinath Dinesh Karlstrom Anders Munizaga Marcela A. 《Marketing Letters》2002,13(3):163-175
We discuss the development of predictive choice models that go beyond the random utility model in its narrowest formulation. Such approaches incorporate several elements of cognitive process that have been identified as important to the choice process, including strong dependence on history and context, perception formation, and latent constraints. A flexible and practical hybrid choice model is presented that integrates many types of discrete choice modeling methods, draws on different types of data, and allows for flexible disturbances and explicit modeling of latent psychological explanatory variables, heterogeneity, and latent segmentation. Both progress and challenges related to the development of the hybrid choice model are presented. 相似文献
102.
We develop an index measuring the three main dimensions – prosecution, protection, and prevention – of the anti‐trafficking policies of the governments of up to 180 countries over the 2000?2010 period. Overall, developed countries perform better than the rest of the world; compliance with prosecution policy is highest, while governmental efforts to protect victims of human trafficking remain weakest. We employ the new indices to investigate which factors determine anti‐trafficking policies. We find that compliance with anti‐trafficking policies significantly decreases with corruption and is higher in countries that also respect the rights of women. We also find some tentative evidence for spatial dependence in anti‐trafficking policies. 相似文献
103.
Global factors are becoming increasingly important as a cause of international capital fl ows. It is nearly impossible for some countries to protect themselves from outside infl uences on their fi nancial markets. This paper investigates the extent to which various global factors such as stock market volatility, international liquidity and global interest rate levels impact on the effective fi nancial market exchange rates of selected emerging market economies. These results are compared with effects on the fi nancial market exchange rates of the United States, the United Kingdom and Germany. 相似文献
104.
Stefan Stieglitz Linh Dang-Xuan Axel Bruns Christoph Neuberger 《Business & Information Systems Engineering》2014,6(2):89-96
In this contribution, we introduce “social media analytics” (SMA) as an emerging interdisciplinary research field that, in our view, will have a significant impact on social media-related future research from across different academic disciplines. Despite a number of challenges, we argue that SMA can provide other disciplines – including IS – with methodological foundations for research that focuses on social media. Furthermore, we believe that SMA can help IS research to develop decision-making or decision-aiding frameworks by tackling the issue of social media-related performance measurement, which has been challenging until now. Moreover, SMA can provide architectural designs and solution frameworks for new social media-based applications and information systems. Finally, we call for an interdisciplinary SMA research agenda as well as a significantly increased level of interdisciplinary research co-operation, which must aim to generate significant advancements in scientific methods for analyzing social media, as well as to answer research questions from across different disciplines. 相似文献
105.
We investigate the impact of government ideology on left-wing as compared to conservative individuals. We find that conservative people are happier, on average. In a sample excluding the richest countries left-wing people are happier under the tenure of left-wing governments. 相似文献
106.
Dominik Böhnlein Katharina Schweiger Axel Tuma 《International Journal of Production Economics》2011,131(1):146-157
In many cases of today's planning tasks, the synchronization of production and distribution is becoming increasingly important in order to minimize costs and to maximize customer satisfaction. This is especially the case if transport schedules are closely connected to production schedules, as it is in the newspaper industry—where perishable goods are distributed immediately after production. In order to achieve the above mentioned competing objectives, a special kind of vehicle routing problem, the vehicle routing problem with time windows and cluster-dependent tour starts (VRPTWCD), has to be solved. Moreover, the varying print and post-processing schedules due to unknown editorial deadlines lead to the need for a dynamic online control of the newspaper production and distribution process. In this contribution, the outlined dynamic transport problem is solved online under consideration of unforeseen changes in production schedules. The solution concept is based on a multi-agent system consisting of, amongst others, several Edition and Vehicle Agents. This system is exemplarily applied to a real life application case of one of the largest German newspaper companies. It is shown that a static (centralized) optimization of the underlying problem would even lead to worse results in comparison to the current situation and that the appliance of the multi-agent system is suitable in the newspaper industry. 相似文献
107.
108.
Axel Dreher 《Journal of Economic Policy Reform》2013,16(3):225-238
Abstract In theory, the IMF could influence fiscal and monetary policy via several channels, among them advice to policy makers, conditionality, and the moral hazard it induces with the borrowers. This article tries to disentangle those effects empirically. Using panel data for 98 countries over the period 1975–2000 it analyzes whether IMF involvement indeed influences fiscal and monetary policy in program countries. There is evidence that participation in IMF Standby and Extended Fund Facility arrangements improves economic policy. Money disbursed and the degree to which a program is implemented does not have any systematic influence. The same is true for future availability of resources as measured by exhaustion of a country’s quota with the Fund. The final section discusses policy implications. 相似文献
109.
Axel Borrmann 《Intereconomics》1976,11(2):58-61
Since 1970 the world economy has gone through a series of grave crises which have stimulated an intensive discussion about the economic and political relations between industrialized and developing countries. As seen from the Federal Republic of Germany, the witnessed events have not only an international dimension, but they focus attention again on one particular problem of national economic policy, the relationship of external economic policy and development policy, because the new strains on the international plane are in part reflected by this relationship. 相似文献
110.
Axel F. A. Adam‐Müller 《期货市场杂志》2000,20(9):843-864
This article examines the optimal production, export allocation, and hedging decisions of a risk‐averse international firm that exports to several foreign markets with different currencies. The firm faces multiple exchange rate risks. Optimal decisions are analyzed under two scenarios. In the first, there is a forward market for one currency only. Then, the export allocation to different markets is separable from the firm's preferences and the joint distribution of the exchange rates. In contrast, total production is not separable except for a special case. In the second scenario, there is a forward market for each currency. Then, both production and export allocation are separable. Hedging with forward contracts depends on risk premia and on the joint distribution of the exchange rates. If tradable exchange rate risk is a linear function of untradable exchange rate risk plus noise, there is a conflict between cross hedging and taking a basis risk. If, alternatively, the untradable exchange rate risk is a linear function of the tradable exchange rate risk and noise, there is no such conflict. A speculative position in a biased forward market for one currency can be cross hedged using an unbiased forward market for another currency. © 2000 John Wiley & Sons, Inc. Jrl Fut Mark 20:843–864, 2000. 相似文献