1,720,990 research outputs found
The role of handwritten signature verification in multi-modal biometric security systems
No full textBiometric technologies provide important components in thedevelopment of systems for the regulation of on-line information access. Significant application areas exist and continue to grow for these technologies. In this invited paper, a number of key issues will be addressed concerning handwriting verification and its place within a multi-modal biometric system. We shall identify some strategies and techniques for improving the reliability of the handwritten signature as a biometric modality based on a modular approach to feature analysis. We shall provide an overview of current developments in automatic signature verification, in particular defining research strands which are likely to support the translation of robust signature verification techniques from the laboratory to the market place. A number of current research topics in automatic signature verification will be covered including issues in assembling a database of “live” signature samples, enrolment validation and management of system design complexity
Design of multimodal biometric systems for universal authentication and access control
No full textCurrent approaches to the use of single biometrics in personal identity authentication are limited, principally because no single biometric is generally considered both sufficiently accurate and user-acceptable for universal application. Multimodal biometrics can provide a more balanced solution to the security and convenience requirements of many applications. However, such an approach can also lead to additional complexity in the design and management of authentication systems. Additionally, complex hierarchies of security levels and interacting user/provider requirements demand that a system is adaptive and flexible in configuration. In this paper we consider the integration of multi-modal biometrics using intelligent agents to address these issues of complexity management. The work reported here is part of a major project designated IAMBIC (Intelligent Agents for Multimodal Biometric Identification and Control) aimed at exploring the application of the intelligent agent metaphor to the field of biometric authentication
Intelligent Agents for the Management of Complexity in Multimodal Biometrics
No full textCurrent approaches to personal identity authentication using a single biometric technology are limited, principally because no single biometric is generally considered both sufficiently accurate and user-acceptable for universal application. Multimodal biometrics can provide a more adaptable solution to the security and convenience requirements of many applications. However, such an approach can also lead to additional complexity in the design and management of authentication systems. Additionally, complex hierarchies of security levels and interacting user/provider requirements demand that authentication systems are adaptive and flexible in configuration.
In this paper we consider the integration of multimodal biometrics using intelligent agents to address issues of complexity management. The work reported here is part of a major project designated IAMBIC (Intelligent Agents for Multimodal Biometric Identification and Control), aimed at exploring the application of the intelligent agent metaphor to the field of biometric authentication. The paper provides an introduction to a first-level architecture for such a system, and demonstrates how this architecture can provide a framework for the effective control and management of access to data and systems where issues of privacy, confidentiality and trust are of primary concern. Novel approaches to software agent design and agent implementation strategies required for this architecture are also highlighted. The paper further shows how such a structure can define a fundamental paradigm to support the realisation of “universal access” in situations where data integrity and confidentiality must be robustly and reliably protected .
Universal Access in the Information Society Universal Access in the Information Society Look
Inside
Other actions
Export citation
Register for Journal Updates
About This Journal
Reprints and Permissions
Add to Papers
Share
Share this content on Facebook Share this content on Twitter Share this content on LinkedI
Nineteen Urgent Research Topics in Biometrics and Identity Management
No full textBiometric technologies are being increasingly deployed in practical applications but are currently mainly driven by governmental initiatives, ranging from border control applications to national ID programmes, with increasing social and legal impact on everyday’s life. However, biometrics offer wider opportunities and their application as enabling technology for modern identity management systems, having a more user-centred approach, will be more important in the near future. In this paper we give an overview of the most important research topics for Biometrics and Identity Management for the near future
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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
- …
