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RRIOC Tables of Contents: 01020304050607

Romanian Journal of Human-Computer Interaction 2

Editors:Dorian Gorgan; Costin Pribeanu
Dates:2009
Volume:2
Publisher:MATRIX ROM
Standard No:ISSN 1843-4460
Papers:10
Links:Journal Home Page | Issue 1 Abstracts and Author Information | Issue 2 Abstracts and Author Information | Table of Contents
  1. RRIOC 2009 Volume 2 Issue 1
  2. RRIOC 2009 Volume 2 Issue 2

RRIOC 2009 Volume 2 Issue 1

Language Resources for a Question-Answering System for Romanian BIBAKPDF 1-17
  Verginica Barbu Mititelu; Alexandru Ceausu; Radu Ion; Elena Irimia; Dan Stefanescu; Dan Tufis
We describe here several language resources (a lexicon, a paradigmatic morphology, two linguistic thesauri -- the Romanian wordnet and Eurovoc -- and a parallel multilingual corpus) from the perspective of their utility especially in question-answering tasks. We present the stages of the automatic finding of an answer to a question written by a user in a natural language. Wherever necessary, we show the way in which the linguistic resources contribute to various problems solving. The lexicon is a sort of spellchecker for the user's question. The paradigmatic morphology is used for lemmatizing the question and the corpus. The Romanian wordnet is useful for query expansion, for identifying the lexical chains between words senses and for answers retrieval in a mono- and a multilingual system. The Eurovoc thesaurus is used for segmentation and lemmatization of the user's question and of the parallel multilingual corpus from which the answer is retrieved. The architecture of the question-answering system described here is language independent; the language resources, however, are, inherently, language dependent (e.g. the lexicon, the paradigmatic morphology); exceptions make those whose organization or structure allows for a multilingual perspective (e.g. the thesauri and the corpus); in our case, they are aligned.
Keywords: question-answering system, language resources, thesaurus, lexical ontology, corpus
WebVOX -- a Solution for Web Page Accessibility Improvement for Persons with Reading Deficiency BIBAKPDF 18-30
  Paul Fogarassy-Neszly
This paper presents the WebVOX system, for Web page accessibility improvement for persons with reading deficiency. The presented solution addresses peoples with dyslexia, low literacy and reading skills, learning difficulties, visual impaired and color-blind persons and blind persons. Different reading deficiencies were analyzed, concluding the fact that reading problems go beyond anatomic eye functionality. In the context of described solution, different software assistive technologies were presented, both for blind and visual impaired peoples. Were described the functionalities of screen readers, speech synthesis and screen magnifiers; much of these functionalities are implemented in WebVOX. Should be emphasized the fact that proposed solution can improve the Webpage accessibility, but the way these pages are designed and realized should obey the W3C recommendations in order to obtain the full accessibility. At the end several existing solution were presented, both with their advantage and disadvantages.
Keywords: accessibly, Web page, reading deficiency, visual impairment
A task-based design approach to the design of a software assistant for usability evaluation BIBAKPDF 31-44
  Costin Pribeanu
The quality of interactive systems is an important concern that brings in front the ergonomic quality of the user interface. Formative usability evaluation aims at identification and analysis of usability problems as early in the develompment process. For this purpose, a detailed description is needed as well as a classification according to different criteria: impact, context, explanation and suggestion for improvement. An accurate description which is agreed by the evaluation team and communicated to designers improves the product quality and motivates the process of fixing usability problems. In this paper we present a task-based approach to the design of a software tool to assist evaluators during the tasks of collecting, organization and retrieval of usability problems. In the case of heuristic evaluation and / or guidelines-based evaluation the software tools should satisfy two kinds of requirements: providing with appropriate heuristics / guidelines and recording of usability problems. These requirements are resulting from a task analysis and lead to develop a flexible software tool that could be used either as a stand-alone tool or integrated with an existing tool for working with guidelines.
Keywords: usability, formative evaluation, usability problems, computer-aided evaluation, task-based design, usability evaluation assistant, software tools
Non-conventional User-Interaction. General Considerations and Case Studies BIBAKPDF 45-72
  Sabin-Corneliu Buraga; Stefan Ceriu; Anca-Paula Luca; Eduard Moraru; Stefan Negru; Stefan Prutianu
The paper presents several aspects of interest regarding the current non-conventional user-interaction methods. The conducted experiments were focused on using specific hardware devices -- e.g., sensor gloves, mobile terminals, etc. --, and on "atypical" interactive manners to have access to information or knowledge available on the Web.
Keywords: non-conventional interaction, types of interfaces, experiments
An Ontology-centered Approach for Designing an Interactive Competence Management System for IT Companies BIBAKPDF 73-88
  Cristina Niculescu; Stefan Trausan-Matu
The paper presents an ontology-centered approach for designing an interactive competence management system for IT companies. This type of approach helps to shift the focus from a function-oriented, tool-centric view, towards a semantic-oriented view. In the paper are covered subjects as: ontologies definitions, generic architecture of the competence management system (CMS), structure of CMS ontology, building and working the ontology (integrity and inference of the ontology, knowledge acquisition, conceptualization phase, querying types of concepts). The advantage of using an ontology-based system is the possibility of the identification of new relations among concepts based on inferences starting from the existing knowledge. The user can choose to query instances of one type of concept, based on the relations that are displayed for him/her in a dropping menu. In addition to choosing relations modeled in the ontology, the user may also query inferred relations that are not explicitly stored in the knowledge base. Other search type is browsing the ontology. The skeleton of the ontology is seen as a tree with nodes and hyperlinks that point to other concepts or instances. Starting from base-concepts, the user can get specific information about any instance or concept. The paper also presents some use-cases, conclusions and further developments.
Keywords: competencies, interface, ontology, competence management system, information technology

RRIOC 2009 Volume 2 Issue 2

Cognitive task analysis: theoretical and methodological aspects BIBAKPDF 89-104
  Ana Maria Marhan
This paper discusses some of the theoretical and methodological challenges faced by nowadays users of cognitive tasks analysis (CTA) techniques. Despite the fact that CTA is recognised as an important prerequisite for the HCI design process, offering important benefits for quality of a final product, more than often the designers will rather ignore the presentations of CTA techniques provided by sophisticated research reports and papers. A communication effort would be therefore necessary in order to identify and present relevant information for practical applications in a more user-friendly manner, easier to be comprehended, and transferred into practice, with clearer usability bench-marks and more precise directions regarding its integration in subsequent designing stages. It is suggested that a further challenge would be to test various CTA techniques in real design contexts, and asses their effectiveness and efficiency against specific tasks and situations, special design problems and particular organizational structures.
Keywords: cognitive task analysis, expert, interview, knowledge elicitation
Practical Approaches for Interdisciplinary Interaction Design BIBAKPDF 105-118
  Adriana-Mihaela Guran; Daniela-Maria Andrei
In this paper the evolution of software design methods is discussed with insights from the usability perspective. Usability is considered an essential factor in the success or failure of an interactive system, determining its acceptance or rejection. Although the software design methods are continuously evolving, as the user are considered essential stakeholders in the design process, there still can be notice shortages in the process of communicating between the users and the developers of the software solution. The paper presents the chronological evolution of design methods in parallel with the evolution of the usability concept, emphasizing the support provided by the design method for developing usable solutions. The article tries to correlate the software design approaches with the solutions provided by Human-Computer Interaction in order to improve the software design process. As the user centered design focuses on an interdisciplinary approach, the paper presents some practical methods of mixing the approaches from software engineering with methods provided by social sciences.
Keywords: human-computer interaction, usability, design methods
Using Synchronization of Interaction Techniques for Implementing a Hypervideo System BIBAKPDF 119-130
  Marian Dardala; Adriana Reveiu; Titus Felix Furtuna
Multimedia applications use special techniques to browse their own content such as hypertext and hypermedia. These two concepts provide for the users semantic alternative in accessing a multimedia document. A particular way of achieving the concept of hypermedia is hypervideo. The main difficulty for realize such a system is given the fact that video data has spatial feature as well as a temporal dimension that means it lasts in time. To implement a hypervideo system has to define many modules having specialized functions and that are going to communicate each other. Thus, the article presents a data structure adapted to manage the synchronization of user interaction events, according to the timeline of the video sequence and the objects in view, which received the event. Besides the particular data structure are also presented usual operations for its maintaining as well as to explore it in the hypervideo system context.
Keywords: hypertext, hypermedia, hypervideo, frame segment tree, video stream, interaction synchronization
Ch.A.M.P. -- Modeling and Assessment System for Chat Evaluation BIBAKPDF 131-146
  Mihai Dascalu; Stefan Trausan-Matu
The paper presents a system developed to assess the skills and evolution of participants in a collaborative environment. To obtain an overall approach, two scenarios have been considered: quantitative approach based on social networks and number of interchanged utterances between participants and the second, qualitative, based on the semantic content analysis of each utterance. Thus, metrics specific for social networks have been applied on the graph obtained after evaluating each utterance under contextual relevance using methods for text mining, natural language processing and latent semantic analysis. An important component of the system is the visualization module which makes possible the modeling and evolution of social networks. A specific view can be generated in order to analyze the whole chat, a discussion thread, the prospective growth/evolution of each participant, and can highlight the contribution of each participant through the statistics generated by the various metrics applied. Other modules have been developed to evaluate and annotate each chat in order to obtain the "golden sample", to compare notes with the results obtained from automatic analysis and to learn from the corpus using WordNet and LSA.
Keywords: Computer-Supported Collaborative Learning, chat, evaluation, annotation, social network, web semantic, Latent Semantic Analysis
Theories and models for technology acceptance BIBAKPDF 147-160
  Alexandru Balog; Irina Cristescu
The user acceptance of new technologies and systems is a topic of interest for many researchers working in various areas. In this paper we present the main theories employed in assessing the technology acceptance (theory of reasoned action, theory of planned behavior) as well as the technology acceptance models that have been developed on the basis of these theories. The focus is on the model constructs and, implicitly, on the hypotheses that have to be tested in order to validate the technology acceptance models in different contexts of use.
Keywords: models for technology acceptance, TRA, TPB, TAM, TAM2, UTAUT