منابع مشابه
3 Serious Flaws in
Understanding the effect of a heuristic on the time complexity of the well-known A∗ search algorithm has been a subject of a large research body in AI. Among those researches is Korf et al.’s analysis (Korf & Reid, 1998; Korf et al., 2001; Korf, 2000a; Korf, 2000b), which concluded that the effect of a heuristic is to reduce the effective depth rather than effective branching factor. Since this...
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We recently read with great interest and anticipation the development of the EuroSCORE II. However, we have methodological concerns relating to how EuroSCORE II was developed and evaluated [1] and subsequent comments made in an editorial by the authors responding to recent criticisms [2]. We focus on the strategy and study design used to derive and evaluate the model. The authors randomly split...
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Gerrymandering is returning to the Supreme Court. For the first time in three decades, a federal court invalidated redistricting legislation on the grounds that it constituted a partisan gerrymander in violation of the Fourteenth Amendment. That court relied, in part, on a new tool—the efficiency gap—which some have touted as the means to “end gerrymandering once and for all.” We evaluate this ...
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A universal schema for diagonalization was popularized by N.S. Yanofsky (2003), based on a pioneering work of F.W. Lawvere (1969), in which the existence of a (diagonolized-out and contradictory) object implies the existence of a fixed-point for a certain function. It was shown that many self-referential paradoxes and diagonally proved theorems can fit in that schema. Here, we fi...
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There are a number of frameworks for modelling argumentation in logic. They incorporate a formal representation of individual arguments and techniques for comparing conflicting arguments. A common assumption for logic-based argumentation is that an argument is a pair 〈Φ, α〉 where Φ is minimal subset of the knowledgebase such that Φ is consistent and Φ entails the claim α. However, real argument...
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ژورنال
عنوان ژورنال: BMJ
سال: 1995
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.311.7007.752a