1,721,032 research outputs found
FHP-Murphi
No full textFHP-Murphi is an explicit disk based bounded model checker for discrete time (possibly hybrid) stochastic systems
Exploiting Transition Locality in the disk based Murphi Verifier
No full textExploiting Transition Locality in the disk based Murphi Verifie
Predicate abstraction for Murphi
Get PDFtechnical reportPredicate abstraction is a technique used to prove properties in a finite or infinite state system. It employs decision procedures to abstract a concrete state system into a finite state abstraction system, which will then be model checked and refined. In this paper, we present an approach for implementing predicate abstraction for Murphi[1] using CVC Lite[2]. Two cases for each property(i.e. SAT and UnSAT), are tried in model checking. When a fixed point is reached finally, the validity of each property is declared. We applied our tool(called PAM) on the FLASH[3] and German[4] protocols. The preliminary result on these protocols is encouraging
Modeling and Verification of Godson-T Cache Coherence Protocol with Murphi Tool
No full textGodson-T 缓存一致性协议是用于Godson-T众核处理器的缓存一致性协议。在Godson-T协议中，缓存一致性协议和存储一致性模型存在紧密的紧耦合关系，分析协议的一致性时发现该协议满足的缓存一致性不是强一致性，不满足传统意义上缓存透明的一致性要求。我们选取了 Murphi 模型检测工具作为我们建模的语言和验证工具。在对Godson-T缓存一致性协议建模的时候，由于协议的上述特点，我们需要对处理器核结点，高速缓存和内存作为一个整体建模，并成功地验证了协议的相关性质。 Godson-T cache coherence protocol is used in Godson-T many-core architecture. In Godson-T, there is a close tight coupling relationship between cache coherence protocol and memory consistency model. In our research of Godson-T, we found that its cache coherence is relaxed unlike other cache coherence protocols. We choose Murphi as modeling language and verification tool. Thus, when we modeling Godson-T, core, cache and memory must be take into account as a whole. Some invariants and properties has been verified with Murphi
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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