%M J.RRIOC.4.1.1
%T The development and testing of a hierarchical model for the evaluation of
on-line libraries quality (LibEval)
%A Balog, Alexandru
%J Romanian Journal of Human-Computer Interaction
%D 2011
%V 4
%N 1
%P 1-22
%K on-line library, digital library, evaluation model, quality evaluation,
measurement scale, hierarchical model, multidimensional model, EFA, CFA
%* (c) Copyright 2011 RoCHI
%W http://rochi.utcluj.ro/rrioc/en/rrioc-2011-1.html
%X The purpose of this study is to identify the dimensions of on-line libraries
quality, and to develop a reliable and valid measurement instrument (LibEval).
After a brief literature review, we present the research model and the
development and testing methodology used. The model is specified as a
second-order factor (on-line library quality) with five dimensions that are
modeled as first-order factors (interface quality, system quality, information
quality, service quality, and context). The model is rigorously tested using
empirical data and the results support the research model. Finally, the utility
of the proposed model is discussed for implications, limitations and future
research.

%M J.RRIOC.4.1.23
%T Image recommendation system based on social, semantic and visual
characteristics
%A Roditis, Maria
%A Tabacariu, Andreea
%A Trausan-Matu, Stefan
%J Romanian Journal of Human-Computer Interaction
%D 2011
%V 4
%N 1
%P 23-50
%K image recommendation, semantic, social, visual features, classification
%* (c) Copyright 2011 RoCHI
%W http://rochi.utcluj.ro/rrioc/en/rrioc-2011-1.html
%X The article presents recommendation systems in terms of the most important
aspects and types of algorithms used in different approaches and
implementations, as well as issues which arise and need to be overcome. The
application presented in this article was developed based on a combination of
multiple ways to recommend images. The proposed model brings quality results
using the following aspects of recommendation: social -- by applying the
concept of collaborative filtering, visual -- by calculating the similarities
between the visual features extracted from images, semantic -- using metrics
based on WordNet similarity between terms, and also by integrating a SVM
classifier for recognition of scene types based on visual aspects. We present
in detail the scientific methods and the architectural design used in our
proposed system.

%M J.RRIOC.4.1.51
%T Guidelines for the design of new interactive technologies for children
%A Marhan, Ana Maria
%J Romanian Journal of Human-Computer Interaction
%D 2011
%V 4
%N 1
%P 51-64
%K child, computer, cognitive development, concrete operational stage
%* (c) Copyright 2011 RoCHI
%W http://rochi.utcluj.ro/rrioc/en/rrioc-2011-1.html
%X The way children learn, play, interact with parents or communicate with
friends is significantly impacted by the ubiquity of digital technologies in
their early life. Successful development of new technologies aimed specifically
at children requires designers to become acquainted with the characteristics of
such a special group of users. Establishing a precise but complex design
framework, with well-articulated and thorough tested theoretical models of the
end-user, is therefore a prerequisite for generating reliable sets of
guidelines able to inform and orient the technology development process.

%M J.RRIOC.4.1.65
%T A case study in specifying a formative index for the analysis of an
e-learning application usability
%A Pribeanu, Costin
%J Romanian Journal of Human-Computer Interaction
%D 2011
%V 4
%N 1
%P 65-80
%K measurement model, formative index, usability, perceived enjoyment
%* (c) Copyright 2011 RoCHI
%W http://rochi.utcluj.ro/rrioc/en/rrioc-2011-1.html
%X Up to now few approaches to usability evaluation exist that are using
structural models to analyze the causal relations between various factors
influencing the quality of use and / or the intention to use. Also, few
measurement models exist that are including composite constructs targeting
several dimensions. Adequate specification of measurement models according to
the nature of construct and direction of causal relations between a construct
and its measures is an important research topic in recent years. In this paper
a synthesis of recent advances in formative models specification and validation
methodology is presented. The methodology was applied to develop a structural
model having as focal variable a composite construct measured with formative
indicators. The purpose of this study is to get more insights into specific
usability issues and to analyze the relationship between usability and the
perceived enjoyment.

%M J.RRIOC.4.1.81
%T Software solutions for statistical data representation in GIS by combining
symbologies
%A Dârdala, Marian
%A Reveiu, Adriana
%J Romanian Journal of Human-Computer Interaction
%D 2011
%V 4
%N 1
%P 81-92
%K cartogram, GIS, symbologies, classes hierarchy, spatial database, thematic
composition, extension
%* (c) Copyright 2011 RoCHI
%W http://rochi.utcluj.ro/rrioc/en/rrioc-2011-1.html
%X Various types of cartograms in the geographic information systems (GIS)
present elements from reality, being in interdependence with their location.
The problem of representation of a large set of information on the cartograms
is of actual interest because the user can perceive the reality through its
many graphic features. The paper aims to present a series of techniques to
build cartograms by combining symbologies in a GIS. The possibility to combine
symbologies is based on the fact that, in addition to surface filler simple
symbologies, there are overlapping symbologies, aiming to draw graphical
objects on spatial data of polygon type. Thus, the user may perceive in
addition to the background colour, which quantifies a characteristic of
reality, other features represented by overlapping elements, like charts,
symbols with various size, or dots with different densities.

%M J.RRIOC.4.2.93
%T Interaction with a Web browser through gestures
%A Coneac, Mihaela
%A Iftene, Adrian
%J Romanian Journal of Human-Computer Interaction
%D 2011
%V 4
%N 2
%P 93-108
%K hand gestures, human-computer interaction, the classification algorithm
%* (c) Copyright 2011 RoCHI
%W http://rochi.utcluj.ro/rrioc/en/rrioc-2011-2.html
%X Abstract. This aim of this article is to present a new way to interact with
a personal computer. Thus, a user can use a webcam and hand gestures to give
commands when using a common web browser like Internet Explorer. After a
training process of the application, where it is learned what means postures
palm, two fingers or fist, it uses the AdaBoost algorithm to classify a hand
posture received from the user in real time. Combining posture identified with
posture trajectory, we obtain the command that gives the user to browser.
Implemented operations allow us to perform vertical scroll, zoom in and zoom
out, jump between active windows, jump between options and to select an option.
The results so far are encouraging and we hope that in future this kind of
interaction will be increasingly used.

%M J.RRIOC.4.2.109
%T Case Study: Automatic Identification of Romanian Suffixes
%A Mititelu, Verginica Barbu
%J Romanian Journal of Human-Computer Interaction
%D 2011
%V 4
%N 2
%P 109-130
%K suffix, derivation, stemming, morphological analysis, generalized suffix
tree
%* (c) Copyright 2011 RoCHI
%W http://rochi.utcluj.ro/rrioc/en/rrioc-2011-2.html
%X Assuming the perspective of automatically identifying derived words and
their bases in the Romanian wordnet, with the aim of enriching it with
derivational relations and semantic labels associated to them, in this article
we present the results of a case study whose aim was to automatically identify
suffixes by means of which new words are created in Romanian. In the beginning
of the paper we make a brief overview of derivation in Romanian, also
anticipating the challenges of our study. For the automatic identification of
the suffixes in words we used generalized suffix trees for representing the
lemmas in an electronic Romanian lexicon. We imposed a series of filters,
identified via observation, by means of which we improved the results. For the
evaluation of the identified suffixes we used gold standard lists of suffixes
grouped according to the part of speech of the derived words. The evaluation of
results was performed in three stages, by comparing them with the gold standard
list of suffixes, with the gold standard list of suffixes and suffixoides, and
with the unified gold standard list of suffixes and suffixoides of the parts of
speech displaying homonymy in Romanian. We showed how the precision and
accuracy of the algorithm change with the threshold imposed on the productivity
of suffixes. The present study reveals the necessary knowledge for recognizing
the morphological structure of words, the difficulties encountered in this
process, and also the importance of this study for linguistic research, for the
Artificial Intelligence domain, in tasks such as information retrieval,
summarization, question answering and all the other tasks relying on natural
language processing.

%M J.RRIOC.4.2.131
%T WikiDetect: Automatic Vandalism Detection On Wikipedia
%A Cioiu, Dan
%A Rebedea, Traian Eugen
%J Romanian Journal of Human-Computer Interaction
%D 2011
%V 4
%N 2
%P 131-156
%K Wikipedia, vandalism, spam, classification
%* (c) Copyright 2011 RoCHI
%W http://rochi.utcluj.ro/rrioc/en/rrioc-2011-2.html
%X Article vandalism has always been one of the greatest security issues of
Wikipedia, yet few automatic (non-human) solutions for this problem have been
developed so far. Large amounts of time are spent by volunteers correcting
vandalized edits, instead of using this time to add quality content to
Wikipedia articles. The purpose of this paper is to introduce a new vandalism
detection system, based on a machine learning technique trained on a corpus of
real data, and to test its performance. The application functions in a very
realistic environment, as it analyzes expert annotated wikitext, extracted from
the encyclopedia's database, which is used to evaluate different vandalism
detection algorithms. The paper presents a critical analysis of the obtained
results, comparing them to existing solutions, and suggests different
statistical classification methods that bring improvements to the system.

%M J.RRIOC.4.2.157
%T Computer Assisted Music Composition
%A Prica, Constantin
%J Romanian Journal of Human-Computer Interaction
%D 2011
%V 4
%N 2
%P 157-174
%K music composition, counterpoint, backtracking, music evaluation
%* (c) Copyright 2011 RoCHI
%W http://rochi.utcluj.ro/rrioc/en/rrioc-2011-2.html
%X The belief that computers cannot play a central role in music composition is
wrong. Research has been conducted in this field for over 50 years. In this
paper, we propose an application which can be of real help to a composer in the
music composition process. The chosen music genre is one that is highly
formalized, namely strict counterpoint. The rules and constraints of the genre
are suitable for a recursive implementation of generating and testing
candidates. Using this method, the application composes up to 10.000 lines of
valid counterpoint. The results are promising, being similar to those presented
by a human composer. The aid provided by computers, if accepted, could
transform music composition.

%M J.RRIOC.4.2.175
%T Usability Specific Heuristics for Parallel and Distributed Applications
%A Gorgan, Dorian
%A Rusu, Cristian
%A Mihon, Danut
%A Colceriu, Vlad
%A Roncagliolo, Silvana
%A Rusu, Virginica
%J Romanian Journal of Human-Computer Interaction
%D 2011
%V 4
%N 2
%P 175-192
%K utilisability, usability heuristics, grid computing, distributed
applications
%* (c) Copyright 2011 RoCHI
%W http://rochi.utcluj.ro/rrioc/en/rrioc-2011-2.html
%X The usability of the applications based on new technologies arises new
issues. New evaluation methods or at least classical methods adapted to the new
real case requirements have to be defined and developed. One of the most known
usability evaluation method is the heuristic one. Many authors have proposed
specific set of usability heuristics for particular applications. Nevertheless,
new formalisms, methodologies, and documentations have to be developed and
adapted to various cases. This paper proposes and experiments a methodology to
support the development of new usability heuristics for the parallel and
distributed applications. The paper exemplifies the using of the methodology to
develop usability heuristics for the grid computing applications.