This paper presents a quasi-lexicographic judgment aggregation rule based on the hierarchy of judges. We do not assume completeness at both individual and collective levels, which means that a judge can abstain from a proposition and the collective judgment on a proposition can be undetermined. We prove that the proposed rule is (weakly) oligarchic. This is by no means a negative result. In fac...

The current implementation provides a demonstration of a number of basic argumentation components that can be applied in the context of multi-agent systems. These components include algorithms for calculating argumentation semantics, as well as for determining the justification status of the arguments and providing explanation in the form of formal discussion games. Furthermore, the current dem...

10 Most research categorizes grocery retailers as following either an Every Day Low pricing (EDLP) or a High Low (Hi-Lo) pricing strategy at a store or chain level, whereas this paper studies retailer pricing and promotions at a brand-store level. It empirically examines 1,364 brand-store combinations from 17 chains, 212 stores and six categories of consumer package goods in five U.S. markets. ...

Within a yearly time framework this tutorial paper describes stochastic programming models to determine the electricity market strategies pertaining to producers, consumers and retailers. A year-ahead forward market and a day-ahead pool market are considered. Hourly pool prices as well as the hourly demands of consumers and retailers are modeled as stochastic variables. Decisions pertaining to ...

The aggregation of consistent individual judgments on logically interconnected propositions into a collective judgment on the same propositions has recently drawn much attention. Seemingly reasonable aggregation procedures, such as propositionwise majority voting, cannot ensure an equally consistent collective conclusion. The literature on judgment aggregation refers to such a problem as the di...

Cued Speech (CS) is a system of manual cues that combined to the lipread information conveys visually the traditionally-spoken languages at the phonemic level. It i s argued here that exposure to CS allows deaf children to develop accurate phonological representations which can support rhyme judgment, phonological short-term memory, use of grapheme-to-phoneme correspondences in reading and spel...

One of the better studied properties for operators in judgment aggregation is independence, which essentially dictates that the collective judgment on one issue should not depend on the individual judgments given on some other issue(s) in the same agenda. Independence, although considered a desirable property, is too strong, because together with mild additional conditions it implies dictatorsh...

Inflation forecasts are an important part of modern day activist stabilization policy, and hence their accuracy and credibility is of vital importance. We examine the accuracy of these forecasts by testing for rationality in the expectation formation process using the Survey of Professional Forecasters data surveys of annual inflation forecasts. The non-stationarity of the actual and forecasted...

Recent work has demonstrated the benefits of repeated judgments in improving the accuracy of estimates – both independent and repeated, individual judgments. The MoreOr-Less-Elicitation (MOLE) method has previously been shown to improve accuracy and precision of elicitation over single judgment elicitations (Welsh, Lee, & Begg, 2008). In this paper, we show the MOLE method delivers superior gai...

Electricity industries around the world have significantly restructured in order to improve their economic efficiency, reliability of power systems and accountability. Accurate prediction of day-ahead electricity nodal price has now become an important activity to address the system operations and price volatility in the restructured electricity market. This will facilitate the market participa...