Generalized point operators for aggregating intuitionistic fuzzy information

We first develop a series of intuitionistic fuzzy point operators, and then based on the idea of generalized aggregation (Yager RR. Generalized OWA aggregation operators. Fuzzy Optim Decis Making 2004;3:93–107 and Zhao H, Xu ZS, Ni MF, Liu SS. Generalized aggregation operators for intuitionistic fuzzy sets. Int J Intell Syst 2010;25:1–30), we develop various generalized intuitionistic fuzzy point aggregation operators, such as the generalized intuitionistic fuzzy point weighted averaging (GIFPWA) operators, generalized intuitionistic fuzzy point ordered weighted averaging (GIFPOWA) operators, and generalized intuitionistic fuzzy point hybrid averaging (GIFPHA) operators, which can control the certainty degrees of the aggregated arguments with some parameters. Furthermore, we study the properties and special cases of our operators. © 2010 Wiley Periodicals, Inc.     

On aggregating uncertain information by type‐2 OWA operators for soft decision making

Yager's ordered weighted averaging (OWA) operator has been widely used in soft decision making to aggregate experts' individual opinions or preferences for achieving an overall decision. The traditional Yager's OWA operator focuses exclusively on the aggregation of crisp numbers. However, human experts usually tend to express their opinions or preferences in a very natural way via linguistic terms. Type‐2 fuzzy sets provide an efficient way of knowledge representation for modeling linguistic terms. In order to aggregate linguistic opinions via OWA mechanism, we propose a new type of OWA operator, termed type‐2 OWA operator, to aggregate the linguistic opinions or preferences in human decision making modeled by type‐2 fuzzy sets. A Direct Approach to aggregating interval type‐2 fuzzy sets by type‐2 OWA operator is suggested in this paper. Some examples are provided to delineate the proposed technique. © 2010 Wiley Periodicals, Inc.     

An overview of audio information retrieval

The problem of audio information retrieval is familiar to anyone who has returned from vacation to find an answering machine full of messages. While there is not yet an “AltaVista” for the audio data type, many workers are finding ways to automatically locate, index, and browse audio using recent advances in speech recognition and machine listening. This paper reviews the state of the art in audio information retrieval, and presents recent advances in automatic speech recognition, word spotting, speaker and music identification, and audio similarity with a view towards making audio less “opaque”. A special section addresses intelligent interfaces for navigating and browsing audio and multimedia documents, using automatically derived information to go beyond the tape recorder metaphor.     

Some generalized aggregating operators with linguistic information and their application to multiple attribute group decision making

With respect to multiple attribute group decision making problems with linguistic information, some new decision analysis methods are proposed. Firstly, we develop three new aggregation operators: generalized 2-tuple weighted average (G-2TWA) operator, generalized 2-tuple ordered weighted average (G-2TOWA) operator and induced generalized 2-tuple ordered weighted average (IG-2TOWA) operator. Then, a method based on the IG-2TOWA and G-2TWA operators for multiple attribute group decision making is presented. In this approach, alternative appraisal values are calculated by the aggregation of 2-tuple linguistic information. Thus, the ranking of alternative or selection of the most desirable alternative(s) is obtained by the comparison of 2-tuple linguistic information. Finally, a numerical example is used to illustrate the applicability and effectiveness of the proposed method.     

基于双重语言信息联动的多阶段决策模型

研究双重语言信息联动下多阶段决策信息的动态集结方法. 考虑决策依据信息和专家偏好信息的自身特点, 设计基于双重语言信息融合的多阶段决策问题分析框架; 分析决策信息的动态变化特征, 以两类信息之间差异最小为原则构建规划模型群, 探寻阶段权重和各阶段下属性权重的具体表现; 设定决策者的信息偏好程度, 集结方案的动态综合绩效和专家判断结果, 在多阶段情形下实现候选方案的优选决策. 最后通过算例验证了所提出方法的科学性和适用性.     

An efficient algorithm for aggregating PEPA models

Performance Evaluation Process Algebra (PEPA) is a formal language for performance modeling based on process algebra. It has previously been shown that, by using the process algebra apparatus, compact performance models can be derived which retain the essential behavioral characteristics of the modeled system. However, no efficient algorithm for this derivation was given. We present an efficient algorithm which recognizes and takes advantage of symmetries within the model and avoids unnecessary computation. The algorithm is illustrated by a multiprocessor example     

Some induced correlated aggregating operators with intuitionistic fuzzy information and their application to multiple attribute group decision making

In this paper, some multiple attribute group decision making (MAGDM) problems in which both the attribute weights and the expert weights are usually correlative, attribute values take the form of intuitionistic fuzzy values or interval-valued intuitionistic fuzzy values, are investigated. Firstly, some operational law, score function and accuracy function of intuitionistic fuzzy values or interval-valued intuitionistic fuzzy values are introduced. Then two new aggregation operators: induced intuitionistic fuzzy correlated averaging (I-IFCA) operator and induced intuitionistic fuzzy correlated geometric (I-IFCG) operator are developed and some desirable properties of the I-IFCA and I-IFCG operators are studied, such as commutativity, idempotency and monotonicity. An I-IFCA and IFCA (intuitionistic fuzzy correlated averaging) operators-based approach is developed to solve the MAGDM problems in which both the attribute weights and the expert weights usually correlative, attribute values take the form of intuitionistic fuzzy values. Then, we extend the developed models and procedures to the interval-valued intuitionistic fuzzy environment. Finally, some illustrative examples are given to verify the developed approach and to demonstrate its practicality and effectiveness.     

Aggregation operators for linguistic weighted information

The aim of this paper is to model the processes of the aggregation of weighted information in a linguistic framework. Three aggregation operators of weighted linguistic information are presented: linguistic weighted disjunction operator, linguistic weighted conjunction operator, and linguistic weighted averaging operator. A study of their axiomatics is presented to demonstrate their rational aggregation     

On aggregation operators for ordinal qualitative information

In many fuzzy systems applications, values to be aggregated are of a qualitative nature. In that case, if one wants to compute some type of average, the most common procedure is to perform a numerical interpretation of the values, and then apply one of the well-known (the most suitable) numerical aggregation operators. However, if one wants to stick to a purely qualitative setting, choices are reduced to either weighted versions of max-min combinations or to a few existing proposals of qualitative versions of ordered weighted average (OWA) operators. In this paper, we explore the feasibility of defining a qualitative counterpart of the weighted mean operator without having to use necessarily any numerical interpretation of the values. We propose a method to average qualitative values, belonging to a (finite) ordinal scale, weighted with natural numbers, and based on the use of finite t-norms and t-conorms defined on the scale of values. Extensions of the method for other OWA-like and Choquet integral-type aggregations are also considered     

An overview of auditory display to assist comprehension of molecular information

This paper presents an overview of auditory display (the use of non-speech sounds to convey information) applied to the study of molecular properties in human–computer interfaces, particularly in virtual environments. Chemistry researchers and students have difficulty in analysing and comprehending molecular structure and bonding and other biomolecular characteristics. Research reports that non-speech sounds have been useful in identifying trends in gene sequences and molecular characteristics, which when used in virtual environments, can facilitate comprehension of complex relationships that are difficult to perceive through visualisation alone.     

区间直觉模糊信息的集成方法及其在决策中的应用

对区间直觉模糊信息的集成方法进行了研究.定义了区间直觉模糊数的一些运算法则,并基于这些运算法则,给出区间直觉模糊数的加权算术和加权几何集成算子.定义了区间直觉模糊数的得分函数和精确函数,进而给出了区间直觉模糊数的一种简单的排序方法.最后提供了一种基于区间直觉模糊信息的决策途径,并进行了实例分析.     

Computing and information technology in a distributed environment. An overview

Even before the computer was invented, the concept of parallel computation was applied to solving many supercomplex problems manually using large teams of operators. In this overview, the possibility of solving problems in parallel is analyzed and the durability of parallel systems is estimated. As well, parallelization methods, supercomputer unfriendliness, information and access management in distributed environments, distributed systems applied for information simulation and analysis, and establishment of specialized centers are discussed.     

二元语义信息集结算子的性质分析

研究语言评价信患处理中有关二元语义集结算子的性质。首先描述了二元语义信患集结的有序加权平均(T-OWA)算子，并提出一种有序加权几何(T-OWG)算子；然后分析了T-OWA算子和T-OWG算子所具有的性质。该研究结果丰富了二元语义集结算子的分析方法。     

Fundamental limitations and intrinsic limits of feedback: An overview in an information age

This paper presents a review on the fundamental performance limitations and design tradeoffs of feedback control systems, ranging from classical performance tradeoff issues to the more recent information-theoretic analysis, and from conventional feedback systems to networked control systems, with an attempt to document some of the key achievements in more than seventy years of intellectual inquiries into control performance limitation studies, as so embodied by the timeless contributions of Bode known as the Bode integral relations.     

The notion of overview in information visualization

Overview is a frequently used notion and design goal in information-visualization research and practice. However, it is difficult to find a consensus on what an overview is and to appreciate its relation to how users understand and navigate an information space. We review papers that use the notion of overview and develop a model. The model highlights the awareness that makes up an overview, the process by which users acquire it, the usefulness of overviews, and the role of user-interface components in developing an overview. We discuss the model in relation to classic readings in information visualization and use it to generate recommendations for future research.     

An overview ofEuLisp

This paper is an abstracted version of theEuLisp definition. As such it emphasizes those parts of the language that we consider the most important or note-worthy, while we just mention, without much detail the elements that are included for completeness. This is reflected in the structure of the paper which describes the module scheme, the object system and support for concurrent execution in the main part and consigns the majority of the datatypes to an appendix.     

An overview ofEuLisp

This paper is an abstracted version of theEuLisp definition. As such it emphasizes those parts of the language that we consider the most important or note-worthy, while we just mention, without much detail the elements that are included for completeness. This is reflected in the structure of the paper which describes the module scheme, the object system and support for concurrent execution in the main part and consigns the majority of the datatypes to an appendix.This work has been supported by too many organisations and programmes to name them individually here, although special mention should be made of the Commission of the European Communities and Jean Omnes of DG XIII (Information technology directorate). A complete list of acknowledgements appears in Section 11     

An overview of TEDIUM

TEDIUM was developed to manage the entire life cycle of a software application from initial analysis through final retirement. In this sense, TEDIUM is different from a Programming Support Environment (PSE), which applies automated tools to aid in program implementation and project control within the context of an established process model. In the case of the PSE, computer technology is used to aid in the management of large, complex software projects. TEDIUM, on the other hand, uses its own software process model and is constrained to moderate-sized information system applications. After a brief history of the environment, the author offers an evaluation of TEDIUM, and some observations that may be of value for other development paradigms or application classes.     

Utilizing deontic operators in information systems specification

One major task in requirements specification is to capture the rules relevant to the problem at hand. Declarative, rule-based approaches have been suggested by many researchers in the field. However, when it comes to modeling large systems of rules, not only for the behavior of the computer system but also for the organizational environment surrounding it, current approaches have problems with limited expressiveness, flexibility, and poor comprehensibility. Hence, rule-based approaches may benefit from improvements in two directions: (1) improvement of the rule languages themselves and (2) better integration with other, complementary modeling approaches.In this article, both issues are addressed in an integrated manner. The proposal is presented in the context of the Tempora project on rule-based information systems development, but has also been integrated with PPP. Tempora has provided a rule language based on an executable temporal logic working on top of a temporal database. The rule language is integrated with static (ER-like) and dynamic (SA/RT-like) modeling approaches. In the current proposal, the integration with complementary modeling approaches is extended by including organization modeling (actors, roles), and the expressiveness of the rule language is increased by introducing deontic operators and rule hierarchies. The main contribution of the article is not seen as any one of the above-mentioned extensions, but as the resulting comprehensive modeling support. The approach is illustrated by examples taken from an industrial case study done in connection with Tempora.C. List of Symbols Subset of set - Not subset of set - Element of set - Not element of set - Equivalent to - Not equivalent to - ¬ Negation - Logical and - Logical or - Implication - Sometime in past - Sometime in future - Always in past - Always in future - Just before - Just after - u Until - s Since - Trigger - Condition - _s State condition - Consequence - _a Action - _s State - Role - Actor - ¬ - General deontic operator - O Obligatory - R Recommended - P Permitted - D Discouraged - F Forbidden - (/–) General rule - t _R Real time - t _M Model time