Ljiljana Brkic

• University of Zagreb Faculty of Electrical Engineering and Computing

This paper introduces adaptive exercises module in the open-source state-of-the-art APAS (Automated Programming Assessment System) Edgar. Adaptive exercises module is designed to facilitate student practice within existing course materials in a guided and adaptive manner, with minimal intervention from instructors. It leverages accumulated course q...

50 days free access to full paper: https://authors.elsevier.com/c/1iZVL1HucdZtcM Abstract: Peer assessment is a process in which students rate their peers which has many benefits for both the assessor and the assessed. It actively engages students, increases motivation by giving a sense of ownership of the assessment process, encourages autonomy a...

The first automated assessment of student programs was reported more than 60 years ago, but this topic remains relevant and highly topical among computer science researchers and teachers. In the last decade, several factors have contributed to the popularity of this approach, such as the development of massive online courses, where large numbers of...

Online shopping, already on a steady rise, was propelled even further with the advent of the COVID-19 pandemic. Of course, credit cards are a dominant way of doing business online. The credit card fraud detection problem has become relevant more than ever as the losses due to fraud accumulate. Most research on this topic takes an isolated, focused...

Automated Programming Assessment Systems (APAS) are used for overcoming problems associated with manually managed programming assignments, such as objective and efficient assessing in large classes and providing timely and helpful feedback. In this paper we survey the literature and software in this field and identify the set of necessary features...

A number of studies on the successes and failures of business process management (BPM) have been conducted with the aim of identifying BPM adoption success factors. The complex and comprehensive nature of BPM has resulted in the lack of a generally accepted framework for successful BPM adoption. One general means of ensuring BPM success is through...

A data warehouse should be tested for data quality on regular basis, preferably as a part of each ETL cycle. That way, a certain degree of confidence in the data warehouse reports can be achieved, and it is generally more likely to timely correct potential data errors. In this paper, we present an algorithm primarily intended for integration testin...

Incremental load is the preferred approach in efficient ETL processes. Fact tables are the ones who benefit the most from this approach, since they are large in terms of row count. For the sake of simplicity, dimension tables are often ignored and populated in a full reload manner. However, big dimensions (e.g. Client) can also have a significant i...

We are proposing a multi-meta model that serves as a foundation for schema reuse in conceptual database design. Multi-meta model is based on entity-relationship model. According to the proposed model corresponding database, called multi-meta database is built. Multi-meta database contains descriptions of the existing database models and serves as a...

In this paper we propose the procedure for horizontal fragmentation of data warehouse tables and show how it affects data warehouse's data quality, namely, completeness and timeliness data quality dimensions. Horizontal fragmentation is suitable when data from multiple, more or less independent, organizational units are stored in the same fact tabl...

In order to attain a certain degree of confidence in the quality of the data in the data warehouse it is necessary to perform a series of tests. There are many components (and aspects) of the data warehouse that can be tested, and in this paper we focus on the ETL procedures. Due to the complexity of ETL process, ETL procedure tests are usually cus...

HEIS (Higher Education Information System) is a project funded by the Croatian Ministry of Science, Education and Sports started in the year 2001. HEIS is a comprehensive information system that provides support for education related processes taking place within a higher education institution. As a part of the project, a data warehouse was develop...