this paper presents the context based authentication and authorization management system for security management in the pervasive computing environment. we explored security considerations of the pervasive computing e...
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ISBN:
(纸本)9783540742548
this paper presents the context based authentication and authorization management system for security management in the pervasive computing environment. we explored security considerations of the pervasive computing environment. the proposed system adopts the context-role based access control model as access control model for enforcement of access control service based on various context information. We also studied the methodology to apply partial credential to user authentication. We introduce the authentication confidence index for applying the partial credential to authentication mechanisms. the authentication confidence index is also used for user-role activation in the access control service. this paper shows comparison between our system and related works, such as Cerberus and CASA.
context-awareness has become a necessity for adaptable intelligent applications and services. It is crucial for ubiquitous and pervasive computing because the context of a user or device serves as the source of inform...
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ISBN:
(纸本)3540262628
context-awareness has become a necessity for adaptable intelligent applications and services. It is crucial for ubiquitous and pervasive computing because the context of a user or device serves as the source of information to adapt services. In this paper, we propose a modular context management system that is able to collect, transform, reason on and use context information to adapt services. By employing a component-based approach, we enable our infrastructure not only to support context-aware adaptation of services, but also to support adaptation of the context management system itself at deployment time and at runtime. this self-adaptation is based upon the service requirements and the current context of the device, such as the current resource usage or other devices in the neighborhood, resulting in an adaptive context management system for improved quality of service.
the proceedings contain 10 papers. the special focus in this conference is on Business modeling and Software Design. the topics include: Towards dynamic business process management;new approaches for automated process...
ISBN:
(纸本)9783319405117
the proceedings contain 10 papers. the special focus in this conference is on Business modeling and Software Design. the topics include: Towards dynamic business process management;new approaches for automated process model discovery;a business process meta-model for knowledge identification based on a core ontology;semantic technologies for the integration of methods into an enterprise architecture;supporting the security certification and privacy level agreements in the context of clouds;two case studies on generating administrative process applications with adminDSL;a financial approach for managing interest in technical debt;classifying business model canvas usage from novice to master;make the most of it-enabled capabilities and the process of process management.
Mechanisms that underlie the inductive reasoning process in risk contexts are investigated. Experimental results indicate that people rate the same inductive reasoning argument differently according to the direction o...
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ISBN:
(纸本)9783540742548
Mechanisms that underlie the inductive reasoning process in risk contexts are investigated. Experimental results indicate that people rate the same inductive reasoning argument differently according to the direction of risk aversion. In seeking to provide the most valid explanation of this, two kinds of models based on a Support Vector Machine (SVM) that process different knowledge spaces are proposed and compared. these knowledge spaces-a feature-based space and a category-based space-are both constructed from the soft clustering of the same corpus data. the simulation for the category-based model resulted in a slightly more successful replication of experimental findings for two kinds of risk conditions using two different estimated model parameters than the other simulation. Finally, the cognitive explanation by the category-based model based on a SVM for contextual inductive reasoning is discussed.
the paper presents a computational model of context sensitive judgment, called JUDGEMAP, which has been developed for modeling judgment on a subjective scale. this paper presents an attempt to apply the same model to ...
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ISBN:
(纸本)9783540742548
the paper presents a computational model of context sensitive judgment, called JUDGEMAP, which has been developed for modeling judgment on a subjective scale. this paper presents an attempt to apply the same model to the case of judgment on an objective scale. this is a big challenge since the behavioral data are showing the opposite type of effects. thus we have repeatedly obtained contrast effects of irrelevant information, when judging on a subjective scale. In the experiment described here we obtained an assimilation effect in exactly the same conditions except that the scale was objective. Without any changes of the model we run the corresponding simulations and there are a good and bad news. the bad news is that we did not obtain the assimilation effect, but the good news is that the contrast effect disappeared. the paper discusses possible reasons for these results and possible ways to improve the model.
One of the key factors for effective personalization of information access is the user context. We propose a framework which integrates several critical elements that make up the user context, namely, the user's s...
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ISBN:
(纸本)9783540742548
One of the key factors for effective personalization of information access is the user context. We propose a framework which integrates several critical elements that make up the user context, namely, the user's short-term behavior, semantic knowledge from ontologies that provide explicit representations of the domain of interest, and long-term user profiles revealing interests and trends. Our proposed approach involves implicitly building ontological user profiles by assigning interest scores to existing concepts in a domain ontology. these profiles are, therefore, maintained and updated as annotated instances of a reference domain ontology. We propose a spreading activation algorithm for maintaining the interest scores in the user profile based on the user's ongoing behavior. Our experimental results show that the user context can be effectively utilized for Web search personalization. Specifically, re-ranking the search results based on interest scores derived from the semantic evidence in an ontological user profile provides better search results by proficiently bringing results closer to the top when they are most relevant to the user.
this paper presents a novel language-independent context-based sentence alignment technique given parallel corpora. We can view the problem of aligning sentences as finding translations of sentences chosen from differ...
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ISBN:
(纸本)9783540742548
this paper presents a novel language-independent context-based sentence alignment technique given parallel corpora. We can view the problem of aligning sentences as finding translations of sentences chosen from different sources. Unlike current approaches which rely on pre-defined features and models, our algorithm employs features derived from the distributional proper-ties of sentences and does not use any language dependent knowledge. We make use of the context of sentences and introduce the notion of Zipfian word vectors which effectively models the distributional properties of a given sentence. We accept the context to be the frame in which the reasoning about sentence alignment is done. We examine alternatives for local context models and demonstrate that our context based sentence alignment algorithm per-forms better than prominent sentence alignment techniques. Our system dynamically selects the local context for a pair of set of sentences which maximizes the correlation. We evaluate the performance of our system based on two different measures: sentence alignment accuracy and sentence alignment coverage. We compare the performance of our system with commonly used sentence alignment systems and show that our system performs 1.1951 to 1.5404 times better in reducing the error rate in alignment accuracy and coverage.
context a?ects a wide range of activities in humans and animals as well as in arti?***- edged, and “context” has become an area of study in its own right, as evidenced bynumerousworkshops,symposia,seminars,***- TEXT...
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ISBN:
(数字)9783540742555
ISBN:
(纸本)9783540742548
context a?ects a wide range of activities in humans and animals as well as in arti?***- edged, and “context” has become an area of study in its own right, as evidenced bynumerousworkshops,symposia,seminars,***- TEXT,theoldestconferenceseriesfocusing oncontext,is unique inits emphasis on interdisciplinary research. Previous contextconferences have been held in Rio de Janeiro, Brazil (context’97), Trento, Italy (context’99, LNCS 1688), Dundee, UK (context 2001, LNCS 2116), Palo Alto, USA (CON- TEXT 2003, LNCS 2680), and Paris, France (context2005, LNCS 3554). Each of these brought together researchers and practitioners from a large range of ?elds to discuss and report on context-related research and projects. the context 2007 conference was held at Roskilde University, Denmark. the ?rst two days were devoted to workshops on speci?c areas of interest to the context community and, in parallel, the doctoralconsortium. the remaining three days featured invited talks, presentations, and posters on boththeoretical and applied context research. this volume contains the papers presented at context 2007, the Sixthinternational and interdisciplinaryconference on modeling and usingcontext. there were 121 submissions to the conference. the committee decided to accept 42 papers on the basis of a thorough and highly selective review process. We believe that the papers of this volume represent a snapshot of current work and contribute to boththeoretical and applied aspects of research.
the objective of novel e-learning strategies is to educate the learner during his actual work process. We focus on this new approach of in-place and in-time e-learning, which offers learning resources right in time th...
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ISBN:
(纸本)9783540742548
the objective of novel e-learning strategies is to educate the learner during his actual work process. We focus on this new approach of in-place and in-time e-learning, which offers learning resources right in time the user is in need for it. A crucial factor for those modern task-oriented e-learning software is the user's context. To deliver learning resources to the user, which are both suitable and helpful with regards to the user's current work situation and his competencies, the application always has to consider the learner's actual work task, his environment, and history. In this paper, we present an architecture for the work task prediction, evaluate different machine learning algorithms in depth by their accuracy for that purpose and discuss the integration in our e-learning environment. this validates the possible usage in real-world business scenarios.
the proceedings contain 21 papers from the Distributed Applications and Interoperable Systems: 5th IFIP WG 6.1 internationalconference, DAIS 2005. the topics discussed include: adaptive context management using a com...
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the proceedings contain 21 papers from the Distributed Applications and Interoperable Systems: 5th IFIP WG 6.1 internationalconference, DAIS 2005. the topics discussed include: adaptive context management using a component-based approach;customized billing for location-based services;loosely-coupled integration of CSCW systems;interoperability and eServices;model-driven self-management of legacy applications;model-driven methodology for building QoS-optimized web service compositions;designing self-adaptive multimedia applications through hierarchical reconfiguration;enriching UDDI information model with an integrated service profile;and an architecture for implementation application interoperation with heterogeneous systems.
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