Justice Climate and Workgroup Outcomes: The Role of Coworker Fair Behavior and Workgroup Structure

Journal of Business Ethics - Research on justice climate demonstrates a consistent effect on workgroup outcomes such as job satisfaction, commitment, and performance. However, little research...     

The QLBS Q-Learner goes NuQLear: fitted Q iteration,inverse RL,and option portfolios

The QLBS model is a discrete-time option hedging and pricing model that is based on Dynamic Programming (DP) and Reinforcement Learning (RL). It combines the famous Q-Learning method for RL with the Black–Scholes (–Merton) (BSM) model's idea of reducing the problem of option pricing and hedging to the problem of optimal rebalancing of a dynamic replicating portfolio for the option, which is made of a stock and cash. Here we expand on several NuQLear (Numerical Q-Learning) topics with the QLBS model. First, we investigate the performance of Fitted Q Iteration for an RL (data-driven) solution to the model, and benchmark it versus a DP (model-based) solution, as well as versus the BSM model. Second, we develop an Inverse Reinforcement Learning (IRL) setting for the model, where we only observe prices and actions (re-hedges) taken by a trader, but not rewards. Third, we outline how the QLBS model can be used for pricing portfolios of options, rather than a single option in isolation, thus providing its own, data-driven and model-independent solution to the (in)famous volatility smile problem of the Black–Scholes model.     

By the teeth: A critical examination of James Scott's The moral economy of the peasant

Peasant households in Southeast Asia and elsewhere live on the margin of subsistence. Their survival strategies make them technological conservatives and weavers of reciprocal webs of social obligation and dependence. James C. Scott has argued that the fabric of this “moral economy” both guarantees subsistence for the peasants and forms the touchstone on which their judgements of social justice are tested. When those who should offer succor withdraw it, peasants are outraged and from their anger springs peasant rebellion. Two South Asian peasant rebellions of the 1940s (Telengana and Tebhaga) fail to support Scott's account and raise major questions about his historical method. Two others case studies focused on the early years of colonial contact (the Padri Wars and the capitalist transformation of the Kaveri delta) lead the authors to question sharply the existence of a “moral economy of the peasant” and to suggest that Scott has inadvertently presented a landlord's view of peasant society.     

The sociology of enterprise, accounting and budget rules: Implications for organizational theory

The sociology of organizations has ignored the evolution of and variation in enterprise rules, budget systems and accounting rules. This paper takes a broad approach to accounting rules, arguing that they are related to large variations in enterprise forms and in industry problems. The rule making and enforcement apparatus of modern society is described. Both external and internal aspects of accounting rules and budget systems are explored.     

When businesses oppose businesses in support of consumerist goals

The study of consumer politics has focused primarily on those instances in which consumer and business interests have been in conflict. When this occurs, consumer groups are generally perceived as the weaker of the two contestants due to the difficulties of mobilizing groups in support of public goods (the classic free rider problem). One mechanism by which consumer groups appear to improve their political prospects is the formation of coalitions with one set of business groups to help oppose a second set of business groups. This paper classifies these consumer-business coalitions and analyses their political significance.

     

Ownership and Control of German Corporations

In a study of the ownership of German corporations, we finda strong relation between board turnover and corporate performance,little association of concentrations of ownership with managerialdisciplining, and only limited evidence that pyramid structurescan be used for control purposes. The static relationship ofownership to control in Germany is therefore similar to theUnited Kingdom and the United States. However, there are markeddifferences in dynamic relations involving transfers of ownership.There is an active market in share blocks giving rise to changesin control, but the gains are limited and accrue solely to theholders of large blocks, not to minority investors. We provideevidence of low overall benefits to control changes and theexploitation of private benefits of control.