Sanja Čandrlić

Application of analytic hierarchy process (AHP) to measure the complexity of the business sector and business software

The paper shows a proposition of metrics for measuring the complexity of the business sector and business software. The metrics is based on a subjective estimation of complexity of the elements from the structure of business sector or business software, and reaching conclusions on the final complexity through the Analytic Hierarchy Process (AHP). Defined in this manner, the metrics represents a unique metrics for measuring the complexity of elements of business sector and business software, which enables their comparison. Due to this, the paper also shows possible situations between the measured complexities. The paper also presents a short overview of existing metrics for measuring the complexity of business sectors and business software.

A Comparison and the Desireable Features of Version Control Tools

The software development team is regularly faced with two major problems: access to previous software versions and simultaneous work of many programmers on the same source code at the same time. Some development teams solve these problems by using version control tools, while others opt for manual version control. This paper analyzes both approaches and compares them according to certain criteria.

Online vs. Paper-Based Testing: A Comparison of Test Results

This paper presents the results of a comparative research of paper-based testing versus online testing using MudRi. The research was conducted on three courses at the Department of Informatics, University of Rijeka, and included 1231 tests. In observed courses, online tests have largely replaced traditional paper-based tests in the last few years. Therefore, the aim of this research was to determine whether the online testing results differ from the results of traditional paper-based tests. The research results showed that, for the observed courses, the median values of the results achieved during MudRi online tests and traditional paper based tests are not significantly different when online tests include certain percentage of subjective test questions.

Model of a system for team software development

The paper describes a program support system for team development in a computer network environment. Existing program solutions already on the market are encapsulated and are not adapted to the needs of users working in an application development team. The objective is to develop a model of the system supporting a network application development. Along with the features providing application development in a network environment, the project solution includes facilities for producing various reports, automatic backup and version control

Comparison of Two Versions of Formalization Method for Text Expressed Knowledge

The Node of Knowledge (NOK) method is a method for knowledge representation. It is used as a basis for development of formalism for textual knowledge representation (FNOK). Two versions of formalization methods and, respectively, two Question Answering (QA) systems are developed. The first system uses grammars; it is written and implemented in Python. The second, improved system is based on storing text in relational databases without losing semantics and it is implemented in Oracle.

The success of open source software: A review

Open source software (OSS) is software with its source code available that may be used, copied, and distributed with or without modifications, and that may be offered either with or without a fee. In this paper we present an overview of the state-of-the-art OSS-related research from different fields and disciplines of the social and information sciences. The emerging work on understanding OSS has questioned what has led to its prosperity. We present an historical review of its success, and we discuss some of the key factors that contributed to the rise of the OSS, mainly from the perspective of the software engineering and economics. We conclude with some real-life business examples of companies that achieved their profit with OSS.

Design phase of information systems integration process

A method of integrating separated information subsystems of a business system in a single information system is described. The problems of an integration process are analyzed as well as the problems concerning separated information subsystems. For successful integration, the process of planning a data model is important. On the basis of an integral data model, it is possible to construct an integrated database.

Adjective representation with the method Nodes of Knowledge

The paper analyzes the semantics of adjectives in sentences in English language. The goal is, based on the analysis of individual sentences and the method of induction, to show the semantic relationship between the adjective and other word types by using the method Nodes of Knowledge (NOK). The NOK method is used for formal knowledge representation expressed in text, i.e. to represent the knowledge network. The method incorporates the enrichment of representation with hidden semantics contained in the context of an individual sentence. The paper analyzes and graphically represents the location of the adjective in a sentence using the NOK method diagram (DNOK). DNOK graphically shows the knowledge network, which can be computer-implemented into the knowledge base as a part of the construction of intelligent information systems. The construction of intelligent information system is not possible without a complete metamodel of language and this work is a contribution to the research.

A system for transformation of sentences from the enriched formalized Node of Knowledge record into relational database

Abstract Verbalized text contains knowledge necessary and sufficient for transfer of numerous human cognitions. The question is how this knowledge was saved into text. Authors believe that they found an important idea how to assemble knowledge into nodes of knowledge. Similar methods in the field of knowledge networks exist, but none of them does it in the same way as the Node of Knowledge (NOK) method. Basic terms and concepts in a language are represented in words whose meaning is final and cannot be divided in subterms. More complex meaning can be achieved by combining words in sentences. According to authors’ opinion, each sentence includes connective medium for words in the sentence (related to semantic reasons), which is inwrought in the Node of Knowledge method. Using the Node of Knowledge method each sentence can be presented as a network of connected words. This network is enriched with links between words so a computer can interpret meaning and knowledge of the sentence in the same way an intelligent person does. A formalized and semantically enriched record of sentences (called Formalized Node of Knowledge – FNOK) is developed. Authors find that in this way, even without statistical text analysis, an algorithm can give correct answer to a question set based on written text. This paper presents the system for transformation of textual knowledge expressed in natural language sentences into a relational database. The system is a part of a larger knowledge-based system based on the Node of Knowledge (NOK) conceptual framework for knowledge-based system development. This paper starts with sentences written in the formalized and enriched form for which a logical transformation into the structure of a relational database is proposed. The system and algorithms for the transformation of formalized sentences into n-tuples of the relational database are distributed and represented in several steps. The research has shown that it is possible to store semantically enriched sentences in relational databases. The solution presented in this paper is important for further development of the system for receiving questions from users and providing answers (i.e. question-answering system), with the ability to use well-developed relational SQL languages. Relational database of texts enables numerous applications in the field of expert and intelligent systems.

The use of ICT in the English language classroom

All aspects of society are constantly developing while adapting to the challenges of the modern world. Education is also included in this continuous process of transformation with the emphasis on the fast information retrieval and acquisition of knowledge from multiple resources. Young people live in a digital environment where they are constantly available on some digital device. This paper presents research on the use of information and communication technology (ICT) in education. Attitudes towards the use of technology in the English language classroom were tested among elementary students. Several surveys were conducted to compare the attitudes of students who use tablets in classrooms on the daily basis with those of students who have only experienced one lesson using tablets. The results suggest that the use of ICT in education is perceived more positively among those students who use technology in their classrooms on the daily basis.