Oksana Chala

Oksana Chala
Kharkiv National University of Radio Electronics · Department of Information Control Systems (ICS)

About

13
Publications
155
Reads
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80
Citations
Citations since 2017
13 Research Items
80 Citations
2017201820192020202120222023051015202530
2017201820192020202120222023051015202530
2017201820192020202120222023051015202530
2017201820192020202120222023051015202530
Introduction
Oksana Chala currently works at the Department of Information Control Systems (ICS) , Kharkiv National University of Radio Electronics. Oksana does research in Artificial Intelligence and Information Systems (Business Informatics).
Skills and Expertise

Publications

Publications (13)
Article
The problem of identifying shilling attacks, which are aimed at forming false ratings of objects in the recommender system, is considered. The purpose of such attacks is to include in the recommended list of items the goods specified by the attacking user. The recommendations obtained as a result of the attack will not correspond to customers' real...
Article
The problem of shilling attacks detecting in e-commerce systems is considered. The purpose of such attacks is to artificially change the rating of individual goods or services by users in order to increase their sales. A method for detecting shilling attacks based on a comparison of weighted temporal rules for the processes of selecting objects wit...
Article
Full-text available
The object of research is the process of knowledge base (KB) constructing, which involves the development of a formal presentation of knowledge, knowledge extraction, verification of their consistency and inclusion in the KB. The implementation of such a process is a necessary condition to use KB in systems supporting management decisions at the ta...
Article
Предметом вивчення в статті є процеси використання темпоральних знань для підтримки прийняття рішень по управлінню складеними об’єктами в умовах неповноти інформації про функціонування підприємства. Мета полягає в розробці комплексного підходу до побудови, а також застосування темпоральних баз знань для аналізу поточного стану підприємства як склад...
Article
The problem of finding the anomalous states of the control object in the management information system under conditions of uncertainty caused by the incompleteness of knowledge about this object is considered. The method of classifying the current state of the control object in real time, allowing to identify the current anomalous state. The method...
Article
Предметом вивчення в статті є процеси побудови представлення знань в інформаційно-управляючих системах на основі темпоральних залежностей, що задають послідовність виконання дій на комплексному об’єкті управління. Мета полягає в розробці методів побудови темпоральних правил, які базуються на результатах аналізу журналів подій об’єкту управління та...
Article
The problem of constructing and expanding the temporal knowledge base for the information-control system is considered. This knowledge base is formally represented by the Markov logic network. It is shown that the behavior of the control object of a given class can be reflected in the form of a set of weighted temporal rules. These rules are formed...
Article
Models of temporal rules of execution of the business process actions were proposed for the use in absence in the process model of complete information on the reasons for execution of these actions caused by interference of the work executors. The rules are formed on the basis of analysis of the sequence of events in the business process log which...
Article
Предметом вивчення в статті є процеси виявлення знань у формі причинно-наслідкових залежностей на основі аналізу логу подій бізнес-процесу. Метою статті є розробка логіко - ймовірнісної моделі причинно-слідчих зв'язків між парами подій журналу, що описують виконання дій бізнес-процесу для підтримки рішення задач автоматизованого побудови бази знань...
Article
The problem of constructing and using the knowledge representation in the process control system is studied. It is shown that when implementing knowledge-intensive business process management, it is necessary to use automated construction and expansion knowledge base to support decision-making in accordance with the current state of the context for...

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