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Pasko G.,British Institute of Technology and E commerce | Kravtsov D.,Bournemouth University | Pasko A.,Bournemouth University
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) | Year: 2010

In contrast to existing methods of metamorphosis based on interpolation schemes, space-time blending is a geometric operation of bounded blending performed in the higher-dimensional space. It provides transformations between shapes of different topology without necessarily establishing their alignment or correspondence. The original formulation of space-time blending has several problems: fast uncontrolled transition between shapes within the given time interval, generation of disconnected components, and lack of intuitive user control over the transformation process. We propose several techniques for more intuitive user control for space-time blending. The problem of the fast transition between the shapes is solved by the introduction of additional controllable affine transformations applied to initial objects in space-time. This gives more control to the user. The approach is further extended with the introduction of an additional non-linear deformation operation to the pure space-time blending. The proposed techniques have been implemented and tested within an industrial computer animation system. Moreover, this method can now be employed in real-time applications taking advantage of modern GPUs. © 2010 Springer-Verlag Berlin Heidelberg. Source

Prade H.,Toulouse 1 University Capitole | Richard G.,British Institute of Technology and E commerce
Proceedings of The International Symposium on Multiple-Valued Logic | Year: 2010

Boolean logic interpretations have been recently proposed for analogical proportions (i.e. statements of the form "a is to b as c is to d"), and for two other related formal proportions named reverse analogy ("what a is to b is the reverse of what c is to d"), and paralogy ("what a and b have in common c and d have it also"). These proportions relate items a, b, c, and d in different ways, on the basis of their differences, or of their similarities. This paper investigates multiple-valued models for these proportions. These extensions may serve different purposes, such as taking into account graded features, or handling crisp ones in non binary attribute domains in a compact way. After summarizing the main results in the binary case, we discuss what multiple valued patterns make sense for the different proportions, starting with tri-valued interpretations, and then considering [0, 1]-valued interpretations. It appears that Lukasiewicz implication-based interpretation fits well with the intended meaning of analogy and reverse analogy, while a minimum-based interpretation is more suitable for paralogy in case of graded features. Besides, the interest of an interpretation based on Post algebra in case of non binary attribute domains is briefly outlined. Similarities and differences with the standard Boolean setting are highlighted. © 2010 IEEE. Source

Prade H.,University Paul Sabatier | Richard G.,University Paul Sabatier | Richard G.,British Institute of Technology and E commerce
International Journal of Intelligent Systems | Year: 2011

Reasoning deductively under incomplete information is nonmonotonic in nature since the arrival of additional information may invalidate or reverse previously obtained conclusions. It amounts to apply generic default rules in an appropriate way to a particular (partially described) situation. This type of nonmonotonic reasoning can only provide plausible conclusions. Analogical reasoning is another form of commonly used reasoning that yields brittle conclusions. It is nondeductive in nature and proceeds by putting particular situations in parallel. Analogical reasoning also exhibits nonmonotonic features, as investigated in this paper when particular situations may be incompletely stated. The paper reconsiders the pattern of plausible reasoning proposed by Polya, "a and b are analogous, a is true, then b true is more credible,'' from a nonmonotonic reasoning point of view. A representation of the statement "a and b are analogous" in terms of nonmonotonic consequences relations is presented. This representation is then related to a logical definition of analogical proportions, i.e. statements of the form "a is to b as c is to d" that has been recently proposed and extended to other types of proportions. Remarkably enough, semantic equivalence between conditional objects of the form "b given a," which have been shown as being at the root of nonmonotonic reasoning, constitutes another type of noticeable proportions. By offering a parallel between two important forms of commonsense reasoning, this paper enriches the comparison between nonmonotonic reasoning and analogical reasoning that is not often made. © 2011 Wiley Periodicals, Inc. Source

Hazarika B.,Assam Don Bosco University | Singh T.J.,Assam Don Bosco University | Saedy H.A.,British Institute of Technology and E commerce
Procedia Computer Science | Year: 2015

Cloud Computing provides solution to licensing, distribution, configuration, and operation of enterprise application associated with the traditional IT infrastructure. Thus to define Quality of Service (QoS) clients and service providers need to establish a Service Level Agreement (SLA). The main objective of service providers is to improve Customer Satisfaction Level (CSL). In this paper, we present a method to minimize the number of reports generated by adapting the method of Window based State Monitoring framework and thereby reporting only the continuous state violations. In previous works, the issue of SLA violation has not received thorough analysis. In this work, we will keep track of the violation in processing a user request and the CPU utilization during the completion of the task. This will play a major role in avoiding the performance degradation encountered by a VM. Another major contribution of this paper is committed to detailed analysis of the state of Cloud environments and datacenter resources with relevant energy consumption during the processing time of a user request. © 2015 The Authors. Source

Liu Y.,British Institute of Technology and E commerce | Bacon J.,University of Cambridge
i-CREATe 2010 - International Convention on Rehabilitation Engineering and Assistive Technology | Year: 2010

We reveal that, despite the high expectations and continuous investment of ICT in education, the technology hasn't been explored and exploited fully to meet the special needs. This is an issue, which we urgently require a more exploratory and cross boundary approach to pursue. One of the biggest problems to people who have disabilities is poverty; most of them still don't have proper jobs. We challenge the diffusion of innovation theories which don't seem to recognise that neither Technology, nor User, nor Market is a global generic domain created outside the education sphere with critical social, political and economic variables. One scenario observed is situated in a rural area called Baoji in the northeast of China. The college had a large number of computers and connections to the Internet, but was seriously lacking ICT resources for teaching and technical support. In contrast, the other college observed was in the most developed city Shanghai. Surprisingly, they had been exploring the Web technology for their electronic collaborations for years. Situated in the school settings, the method of semi-structured interview was used to understand how the innovation is diffused. It is found that, the students had shown high motivations to use ICT as a first and foremost essential tool to access information, and to participate in community activities and employability enhancement; they found it difficult to do so by other means. The assistive, sensory, interactive and communicative technologies are becoming available and affordable. Teachers and learners are users of ICT; they themselves are influencing what approaches to take in using ICT. © 2010 START Centre. Source

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