Coalition Formation by Sophisticated Players


Book Description

The three major aims of the present study were to (a) test some of the major game-theoretic solutions for n-person games in characteristic function form with data obtained from "rational" players; (b) locate, assess, and explain differences between sophisticated and naive subjects in coalition frequencies and payoff disbursements; and (c) provide a common data base for bargaining process analyses and testing of both present and future models. To this end, five quartets of subjects each partici pated in 16 different coalition formation tasks presented as computer-controlled, four-person, characteristic function games with sidepayments. All 20 subjects (a) were relatively mathematically sophisticated, (b) were familiar with the major solution concepts for characteristic function games, (c) could safely assume that their co-players were equally sophisticated and knowledgeable, and (d) possessed a high motivation to maximize reward. The results showed that (a) sophisticated players are less restricted than naive players in coalition choice, (b) their payoffs are less variable and less ~galitarian, (c) these differences between the two populations of sub jects increase with the complexity of the game, and (d) for III the four-person, mDstly non-superadditive games played in the present experiment, the bargaining set M~i) accounts more accurately for payoff disbursements than do the competitive bargaining set H~i), the kernel K, and Selten's equal share analysis.




Theories of Coalition Formation


Book Description

First published in 1984. In this book, the authors set forth the central ideas and results of the major theories of coalition forming behavior. These theories address situations of partial conflict of interest with the following aspects: (1) there are three or more players, (2) players may openly communicate with each other, and (3) players form coalitions by freely negotiating agreements on how to disburse the gains that result from the coalition members’ joint coordinated efforts. These models arise from the two disciplines of mathematics, in the theory of cooperative n-person games with side payments, and social psychology, in theories of small group behavior in mixed-motive situations. The goal is to explore the various solution concepts that make up this body of theory, and in particular to examine the psychological premises that underlie the various theoretical models.




Coalition Formation


Book Description

A comprehensive view of coalition formation is presented here. Each of the chapters gives a summary of theories and research findings in a specific field of interest, at various levels of human and primate organisation.




Financial Structure in Small Business


Book Description

46 4. 2 Assumptions and definitions 48 4. 3 Single period models 4. 3. 1 Introduction: the MM-position 48 4. 3. 2 The effect of risk of default and limited liability 50 53 4. 3. 3 The effect of bankruptcy costs 4. 3. 4 The effect of agency costs 58 4. 3. 5 The effect of informational differences 60 4. 4 Multi-period models 63 4. 4. 1 Introduction: additional assumptions and redefinitions 63 65 4. 4. 2 The MM-position 67 4. 4. 3 The effect of limited liability and the risk of default 4. 4. 4 The effect of bankruptcy costs 70 4. 4. 5 The Scott model 72 4. 4. 6 Some extensions of the Scott model 76 4. 5 Conclusions 79 Appendix to chapter 4 82 83 5 Determinants from the practice of small business finance 83 5. 1 Introduction and overview 5. 2 Determinants related to the firm's internal characteristics 85 5. 3 Determinants related to the firm's external relationships 91 6 A comparison and evaluation of both sources 94 6. 1 Comparison and evaluation 94 6. 2 Summary and empirical implications 98 PART III : EMPIRICAL ANALYSES IN SMALL BUSINESS 7 Analyses of samples of individual firms 103 7. 1 Introduction 103 7. 2 Data 104 7. 3 Hypotheses and variables 107 7. 4 Specification and estimation results 113 IV 8 Analyses of industry averages in retailing 131 8. 1 Introduction 131 8. 2 Data 132 8.




The World Copper Market


Book Description

1.1 The Importance of Copper Copper, the red metal, has been known in histor~ for thousands of ~ears. It ma~ have been mankind's first metal (Joralemon= 1973). And still, probabl~ more than one hundred decades after native copper was used for the first time (Muhl~ (1973: 171», toda~, copper is a ver~ important commodit~: 1. Onl~ aluminum (first in 1963) surpasses refined copper in terms of the total 1 world's mine production and consumption. It outpaces zinc, lead, nickel and tin • 2. Refined copper is one of the most important export products of the developing countries. In 1975, refined copper ranked 8th in the developing countries' export values in general, it was 6th among their non-fuel exports, and their most important export 2 commodit~ among the non-ferrous metals • 3. Man~ small and medium sized industrialized countries depend heavil~ on copper imports. For example, West German~'s share in world mine production has alwa~s been smaller than 0.1 per cent. In the last few decades, however, the Federal Republic's consumption share has amounted to some 8 i. in 1982. 4. Copper is of utmost importance for the export earnings of several countries.




Location and Layout Planning


Book Description







Notes on Economic Time Series Analysis: System Theoretic Perspectives


Book Description

In seminars and graduate level courses I have had several opportunities to discuss modeling and analysis of time series with economists and economic graduate students during the past several years. These experiences made me aware of a gap between what economic graduate students are taught about vector-valued time series and what is available in recent system literature. Wishing to fill or narrow the gap that I suspect is more widely spread than my personal experiences indicate, I have written these notes to augment and reor ganize materials I have given in these courses and seminars. I have endeavored to present, in as much a self-contained way as practicable, a body of results and techniques in system theory that I judge to be relevant and useful to economists interested in using time series in their research. I have essentially acted as an intermediary and interpreter of system theoretic results and perspectives in time series by filtering out non-essential details, and presenting coherent accounts of what I deem to be important but not readily available, or accessible to economists. For this reason I have excluded from the notes many results on various estimation methods or their statistical properties because they are amply discussed in many standard texts on time series or on statistics.




The M/M/∞Service System with Ranked Servers in Heavy Traffic


Book Description

We are concerned here with a service facility consisting of a large (- finite) number of servers in parallel. The service times for all servers are identical, but there is a preferential ordering of the servers. Each newly arriving customer enters the lowest ranked available server and remains there until his service is completed. It is assumed that customers arrive according to a Poisson process of rate A , that all servers have exponentially distributed service times with rate ~ and that a = A/~ is large compared with 1. Generally, we are concerned with the stochastic properties of the random function N(s ,t) describing the number of busy servers among the first s ordered servers at time t. Most of the analysis is motivated by special applications of this model to telephone traffic. If one has a brunk line with s primary channels, but a large number (00) of secondary (overflow) channels, each newly arriving customer is assigned to one of the primary channels if any are free; otherwise, he is assigned to a secondary channel. The primary and secondary channels themselves could have a preferential ordering. For some purposes, it is convenient to imagine that they did even if an ordering is irrelevant.




Refinements of the Nash Equilibrium Concept


Book Description

In this monograph, noncooperative games are studied. Since in a noncooperative game binding agreements are not possible, the solution of such a game has to be self enforcing, i. e. a Nash equilibrium (NASH [1950,1951J). In general, however, a game may possess many equilibria and so the problem arises which one of these should be chosen as the solution. It was first pointed out explicitly in SELTEN [1965J that I not all Nash equilibria of an extensive form game are qualified to be selected as the solution, since an equilibrium may prescribe irrational behavior at unreached parts of the game tree. Moreover, also for normal form games not all Nash equilibria are eligible, since an equilibrium need not be robust with respect to slight perturba tions in the data of the game. These observations lead to the conclusion that the Nash equilibrium concept has to be refined in order to obtain sensible solutions for every game. In the monograph, various refinements of the Nash equilibrium concept are studied. Some of these have been proposed in the literature, but others are presented here for the first time. The objective is to study the relations between these refine ments;to derive characterizations and to discuss the underlying assumptions. The greater part of the monograph (the chapters 2-5) is devoted to the study of normal form games. Extensive form games are considered in chapter 6.