Digital Commons Network^™

A Hybrid Scatter Search/Electromagnetism Meta-Heuristic For Project Scheduling, Dieter Debels, Bert De Reyck, Roel Leus, Mario Vanhoucke

Research Collection Lee Kong Chian School Of Business

In the last few decades, several effective algorithms for solving the resource-constrained project scheduling problem have been proposed. However, the challenging nature of this problem, summarised in its strongly NP-hard status, restricts the effectiveness of exact optimisation to relatively small instances. In this paper, we present a new meta-heuristic for this problem, able to provide near-optimal heuristic solutions for relatively large instances. The procedure combines elements from scatter search, a generic population-based evolutionary search method, and from a recently introduced heuristic method for the optimisation of unconstrained continuous functions based on an analogy with electromagnetism theory. We present computational …

A Dynamic Heuristic For The Stochastic Unrelated Parallel Machine Scheduling Problem, Jean-Paul Arnaout, Ghaith Rabadi, Ji Hyon Mun

Engineering Management & Systems Engineering Faculty Publications

This paper addresses the problem of batch scheduling in an unrelated parallel machine environment with sequence dependent setup times and an objective of minimizing the total weighted mean completion time. The jobs' processing times and setup times are stochastic for better depiction of the real world. This is a NP-hard problem and in this paper, new heuristics are developed and compared to existing ones using simulation. The results and analysis obtained from the computational experiments proved the superiority of the proposed algorithm PMWP over the other algorithms presented.

Confronting Conventional Thinking: The Heuristics Problem In Feminist Legal Theory, Nancy Levit

Faculty Works

The thesis of The Heuristics Problem is that the societal problems about which identity theorists are most concerned often spring from and are reinforced by thinking riddled with heuristic errors. This article first investigates the ways heuristic errors influence popular perceptions of feminist issues. Feminists and critical race theorists have explored the cognitive bias of stereotyping, but have not examined the ways probabilistic errors can have gendered consequences. Second, The Heuristics Problem traces some of the ways cognitive errors have influenced the development of laws relating to gender issues. It explores instances in judicial decisions in which courts commit heuristic …

Anchoring, Information, Expertise, And Negotiation: New Insights From Meta-Analysis, Chris Guthrie, Dan Orr

Vanderbilt Law School Faculty Publications

In this article, we conduct a meta-analysis of studies of simulated negotiations to explore the impact of an initial "anchor," typically an opening demand or offer, on negotiation outcomes. We find that anchoring has a significant impact on the deals that negotiators reach. We also explore whether negotiator experience and the information environment mitigate the influence of anchoring. We conclude by offering prescriptive advice, both "offensive" and "defensive," to negotiators.

It’S Not About The Money: The Role Of Preferences, Cognitive Biases And Heuristics Among Professional Athletes, Michael Mccann

Law Faculty Scholarship

Professional athletes are often regarded as selfish, greedy, and out-of-touch with regular people. They hire agents who are vilified for negotiating employment contracts that occasionally yield compensation in excess of national gross domestic products. Professional athletes are thus commonly assumed to most value economic remuneration, rather than the love of the game or some other intangible, romanticized inclination.

Lending credibility to this intuition is the rational actor model, a law and economic precept which presupposes that when individuals are presented with a set of choices, they rationally weigh costs and benefits, and select the course of action that maximizes their …

Social Psychology, Calamities, And Sports Law, Michael Mccann

Law Faculty Scholarship

This Article examines the role of situational pressures, fundamental attribution errors, and legal frameworks in how professional sports actors respond to the threat and occurrence of calamities. Both natural and manmade threats to American health are likely to rise over the next decade. Such threats may include catastrophic weather, natural disasters, terrorist attacks, and communicable disease pandemics. In response to these threats, professional sports leagues, professional athletes, fans, and media might engage in unprecedented behavior. Consider, for instance, increasingly-devastating weather patterns, and how they might animate leagues to relocate franchises to cities with more favorable forecasts. The same outcome might …