Although a firm benefits from the resource endowment of the partners in its alliance portfolio, research has so far concentrated on partners. This study proposes that mutual conditions of network resources between a firm and its partners – the compatibility of underlying resources, including physical and R&D resources, strategy, status, and the complementarity of technology – have a positive re...

We consider the task of assigning experts from a portfolio of specialists in order to solve a set of tasks. We apply a Bayesian model which combines collaborative filtering with a feature-based description of tasks and experts to yield a general framework for managing a portfolio of experts. The model learns an embedding of tasks and problems into a latent space in which affinity is measured by...

This paper incorporates human capital into the well-established portfolio theory by allowing for job security in personal portfolio choice. Our model predicts that young people hold more cash to hedge against risk associated with human capital (layoff risk). As people age, layoff risk decreases, and consequently, they invest in more risky assets – stocks in their portfolios. However, as people ...

Understanding correlations in complex systems is crucial in the face of turbulence, such as the ongoing financial crisis. However, in complex systems, such as financial systems, correlations are not constant but instead vary in time. Here we address the question of quantifying state-dependent correlations in stock markets. Reliable estimates of correlations are absolutely necessary to protect a...

We propose an approach to optimally select corporate bond portfolios based on bond-specific characteristics (maturity, credit rating, coupon, illiquidity, past performance, and issue size) and macroeconomic conditions (recessions and macroeconomic uncertainty measures). The approach relies on a parametric specification of the portfolio weights and allows us to consider a large cross-section of ...

The de nition of universal portfolio was introduced in the nancial literature in order to describe the class of portfolios which are constructed directly from the available observations of the stocks behavior without any assumptions about their statistical properties. Cover [6] has shown that one can construct such portfolio using only observations of the past stock prices which generates the s...

During the conversation it became clear that he was looking for the big picture. It was obvious that an additional view was required – a view that could complement the current, singular focus on individual business processes that leads to the management of each process in isolation. Such a consolidating view of the complete landscape of business processes is the heart of process portfolio manag...

Introduction: The portfolio can be seen as a tool for assessmentof a variety of learning activities that differ in content, usage, andassessment. The portfolio not only meets the learner’s educationalneeds but also the political and public reassurance demand thatthe health professional has achieved the required competency ofthe curriculum that allows him or her to practice safely with orwithout...

In this research, performance of portfolios formed by use of grid strategy based on new variables (aggressive, indifference and defensive stocks) presented by Rahnamaye Roodposhti (1388), and traditional ones (growth, growth-value and value stocks), calculated with Sharpe and Treynor performance measures and tested by an Active portfolio management approach to identify the portfolios by perform...

1Jonathan B. Berk Haas School of Business University of California, Berkeley and National Bureau of Economic Research Email: [email protected] P roponents of “efficient markets” argue that it is impossible to consistently beat the market. In support of their view they point to the evidence that, as a group, active managers do not beat the market and conclude that even these investment prof...