Witold Abramowicz

Witold Abramowicz
Poznan University of Economics · Department of Information Systems

Professor

About

247
Publications
35,176
Reads
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853
Citations
Additional affiliations
January 2005 - December 2011
Poznan University of Economics

Publications

Publications (247)
Preprint
There are over a billion websites on the Internet that can potentially serve as sources of information on various topics. One of the most popular examples of such an online source is Wikipedia. This public knowledge base is co-edited by millions of users from all over the world. Information in each language version of Wikipedia can be created and e...
Conference Paper
Full-text available
There are over a billion websites on the Internet that can potentially serve as sources of information on various topics. One of the most popular examples of such an online source is Wikipedia. This public knowledge base is co-edited by millions of users from all over the world. Information in each language version of Wikipedia can be created and e...
Conference Paper
Full-text available
We present an approach for extracting vessel movement patterns from historical Automatic Identification System (AIS) messages that are combined with historical weather information. In the maritime domain, safe and efficient vessel operations depend upon a prescient voyage planning and ship monitoring. Realization of these tasks require IT systems t...
Article
Full-text available
The presented method reconstructs a network (a graph) from AIS data, which reflects vessel traffic and can be used for route planning. The approach consists of three main steps: maneuvering points detection, waypoints discovery, and edge construction. The maneuvering points detection uses the CUSUM method and reduces the amount of data for further...
Article
Full-text available
One of the most important factors impacting quality of content in Wikipedia is presence of reliable sources. By following references, readers can verify facts or find more details about described topic. A Wikipedia article can be edited independently in any of over 300 languages, even by anonymous users, therefore information about the same topic m...
Article
Full-text available
In this research we presented different approaches to investigate the possible relationships between the largest crowd-based knowledge source and the market potential of particular cryptocurrencies. Identification of such relations is crucial because their existence may be used to create a broad spectrum of analyses and reports about cryptocurrency...
Preprint
One of the most important factors impacting quality of content in Wikipedia is presence of credible sources. By following references readers can verify facts or find more details about described topic. A Wikipedia article can be edited independently in any of over 300 languages, even by anonymous users, therefore information about the same topic ma...
Book
This book constitutes the proceedings of the 23rd International Conference on Business Information Systems, BIS 2020, which was planned to take place in Colorado Springs, CO, USA. Due to the COVID-19 pandemic, the conference was held fully online during June 8–10, 2020. This year's theme was "Data Science and Security in Business Information System...
Book
This book constitutes revised papers from the five workshops which were held during June 2020 at the 23rd International Conference on Business Information Systems, BIS 2020. The conference was planned to take place in Colorado Springs, CO, USA. Due to the COVID-19 pandemic it changed to a virtual format. There was a total of 54 submissions to all w...
Article
Full-text available
On Wikipedia, articles about various topics can be created and edited independently in each language version. Therefore, the quality of information about the same topic depends on the language. Any interested user can improve an article and that improvement may depend on the popularity of the article. The goal of this study is to show what topics a...
Preprint
In Wikipedia, articles about various topics can be created and edited independently in each language version. Therefore, quality of information about the same topic depends on language. Any interested user can improve an article and that improvement may depend on popularity of the article. The goal of this study is to show what topics are best repr...
Preprint
In Wikipedia, articles about various topics can be created and edited independently in each language version. Therefore, quality of information about the same topic depends on language. Any interested user can improve an article and that improvement may depend on popularity of the article. The goal of this study is to show what topics are best repr...
Book
This book constitutes revised papers from the nine workshops and one accompanying event which took place at the 22nd International Conference on Business Information Systems, BIS 2019, held in Seville, Spain, in June 2019. There was a total of 139 submissions to all workshops of which 57 papers were accepted for publication. The workshops include...
Book
This book constitutes revised papers from the seven workshops and one accompanying event which took place at the 21st International Conference on Business Information Systems, BIS 2018, held in Berlin, Germany, in July 2018. Overall across all workshops, 58 out of 122 papers were accepted. The workshops included in this volume are: • AKTB 2018 -...
Article
Full-text available
Wikipedia jest obecnie jednym z najpopularniejszych źródeł wiedzy. Wiele artykułów tej wielojęzycznej encyklopedii zawiera informacje o różnego rodzaju produktach, np. samochodach, filmach, grach komputerowych, telefonach komórkowych. Artykuły o każdym z tych dóbr mogą powstawać niezależnie w różnych językach, w związku z czym można zaobserwować ró...
Conference Paper
Full-text available
Agility and ability to produce IT innovations is what makes today's leaders in the banking sector. These features certainly describe Polish banking, which is currently one of the most innovative in the world. Over the last ten years, the number of its active electronic banking customers has tripled, reaching 17.8 million in the first quarter of 201...
Article
Full-text available
The paper presents results of spatial analysis of huge volume of AIS data with the goal to detect predefined maritime anomalies. The maritime anomalies analysed have been grouped into: traffic analysis, static anomalies, and loitering detection. The analysis was carried out on data describing movement of tankers worldwide in 2015, using sophisticat...
Chapter
The article concerns automatic lemmatization of Multi-Word Units for highly inflective languages. We present an approach, where the lemmatization is conducted using rules generated solely based on a corpus analysis. Conducted experiments revealed, that the accuracy of automatic lemmatization of MWUs for the Polish language according to the develope...
Chapter
Full-text available
Wikipedia is the most popular and the largest user-generated source of knowledge on the Web. Quality of the information in this encyclopedia is often questioned. Therefore, Wikipedians have developed an award system for high quality articles, which follows the specific style guidelines. Nevertheless, more than 1.2 million articles in Polish Wikiped...
Chapter
Full-text available
The leading online encyclopedia Wikipedia is struggling with inconsistent article quality caused by the collaborative editing model. While one can find many helpful articles with consistent information on Wikipedia, there are also a lot of questionable articles with unclear or unfinished information yet. The quality of each article may vary over ti...
Conference Paper
Full-text available
This paper presents methods for anomaly detection in the maritime domain-tested in a traditional and big data setting. The generic methods were designed and developed within the EDA-funded SIMMO project, whose goal was to develop a maritime surveillance system based on AIS messages enriched with ancillary data sources. AIS (Automatic Identification...
Article
Full-text available
This paper focuses on cybersecurity knowledge, claiming that this knowledge may have a value of its own, and suggests a market mechanism to foster the creation of this kind of value. The goal is to elaborate the value of cybersecurity knowledge and propose a semantic approach with an example model to enable better handling of the relevant body of k...
Preprint
Wikipedia is the most popular and the largest user-generated source of knowledge on the Web. Quality of the information in this encyclopedia is often questioned. Therefore, Wikipedians have developed an award system for high quality articles, which follows the specific style guidelines. Nevertheless, more than 1.2 million articles in Polish Wikiped...
Article
Full-text available
Despite the fact that Wikipedia is often criticized for its poor quality, it continues to be one of the most [-15]popular knowledge bases in the world. Articles in this free encyclopedia on various topics can be created and edited in about 300 different language versions independently. Our research has showed that in language sensitive topics, the...
Article
Full-text available
The paper presents a proposal for a framework for the identification, assessment and selection of open data sources based on certain quality criteria, such as accessibility, relevance, accuracy & reliability, clarity, timeliness & punctuality, and coherence & comparability. The framework concerns mainly open data sources and focuses on their qualit...
Preprint
Despite the fact that Wikipedia is often criticized for its poor quality, it continues to be one of the most popular knowledge base in the world. Articles in this free encyclopedia on various topics can be created and edited in about 300 different language versions independently. Our research showed that in language sensitive topics quality of info...
Chapter
Full-text available
Reliable information sources are important to assess content quality in Wikipedia. Using references readers can verify facts or find more details about described topic. Each Wikipedia article can have over 290 language versions. As articles can be edited independently in any language, even by anonymous users, the information about the same topic ma...
Chapter
Full-text available
Nowadays, the assessment of the quality and credibility of Wikipedia articles becomes increasingly important. We propose to use morphological and semantic features to estimate the quality of Wikipedia articles in Russian language. We distinguished over 150 linguistic features and divided them into four groups. In these groups, we considered the fea...
Chapter
Full-text available
In this paper we compare the suitability of various classification models (including CART, random forest, boosting trees, C4.5, C5.0, SVM, neural networks) for automatic assessment of the quality of articles in seven language editions of Wikipedia (Belarussian, German, English, French, Polish, Russian, Ukrainian). We employed models available in ST...
Conference Paper
As modern enterprises use a number of different information systems, the problem of integrating them becomes crucial. One of the most-used patterns for integration is through application interfaces. However, information systems change constantly in order to respond to the new informational needs of enterprises. The regression testing goal is to ass...
Conference Paper
Full-text available
This paper describes how mobility patterns understood as trajectory based models can be applied for an anomaly detection and authentication using telecommunication data. The trajectory based mobility model utilizing stay-point extraction suited for the sparse CDR data is used to describe mobility patterns of a user. In this model, the observed acti...
Book
This book constitutes revised papers from the three workshops and two accompanying events which took place at the 20th International Conference on Business Information Systems, BIS 2017, held in Poznań, Poland, in June 2017. The workshops included in this volume are: * The 9th Workshop on Applications of Knowledge-Based Technologies in Business –...
Book
This book constitutes revised papers from the six workshops held at the 19th International Conference on Business Information Systems, BIS 2016, held in Leipzig, Germany, in July 2016. The workshops included in this volume are: * The 8th Workshop on Applications of Knowledge-Based Technologies in Business - AKTB2016 accepted 7 papers from 14 submi...
Article
In this paper, we discuss a software architecture, which has been developed for the needs of the System for Intelligent Maritime Monitoring (SIMMO). The system bases on the state-of-the-art information fusion and intelligence analysis techniques, which generates an enhanced Recognized Maritime Picture and thus supports situation analysis and deci-...
Conference Paper
Full-text available
This article aims to analyse the importance of the Wikipedia articles in different languages (English, French, Russian, Polish) and the impact of the importance on the quality of articles. Based on the analysis of literature and our own experience we collected measures related to articles, specifying various aspects of quality that will be used to...
Article
Full-text available
The article concerns integration and disambiguation of data related to maritime domain. A developed system is described, which collects and merges data about several maritime-related entities (vessels, vessel types, ports, companies etc.) retrieved from different internet sources and feeds the data into a single database. This process is however no...
Book
This book contains the refereed proceedings of the 19th International Conference on Business Information Systems, BIS 2016, held in Leipzig, Germany, in July 2016. The BIS conference series follows trends in academia and business research; thus the theme of the BIS 2016 conference was Smart Business Ecosystems". This recognizes that no business is...
Conference Paper
In this paper, we present a maritime domain awareness system, developed within the project System for Intelligent Maritime MOnitoring (SIMMO), which aims at creating an enhanced Recognized Maritime Picture (RMP) and thus supporting a user in situation analysis and decision-making process. The general goal of the SIMMO system is to fuse an up-to-dat...
Conference Paper
In this paper, we present a maritime domain awareness system, developed within the project System for Intelligent Maritime MOnitoring (SIMMO), which aims at creating an enhanced Recognized Maritime Picture (RMP) and thus supporting a user in situation analysis and decision-making process. The general goal of the SIMMO system is to fuse an up-to-dat...
Conference Paper
Full-text available
Cyber defence must cope with a wide variety of possible attacks, appearing each day at increasing pace. In addition, anorganization should master defence technologies and prioritize what defence should be taken, given that resources are limited. Evaluation of possible attacks and risks is therefore crucial. Since the relevant knowledge is complex a...
Article
The electricity retail markets are evolving toward more competitive and customer-oriented. The deployment of smart meters and a wealth of new technologies create customers' eagerness for taking control of their electricity consumption.By being better-informed about the energy usage, people are encouraged to switch deals among existing suppliers or...
Article
Full-text available
Artykuł jest próbą naszkicowania wzorca programów nauczania informatyki ekonomicznej na studiach licencjackich krajowych uczelni ekonomicznych. Jest to przedsięwzięcie pionierskie dla informatyki ekonomicznej, bowiem nie istnieje nawet aktualnie opracowany standard międzynarodowy programu nauczania w tej dziedzinie. Informatyka ekonomiczna, nawet w...
Article
The vast amount of data that organizations should gather, store and process, entails a set of new requirements towards the analytical solutions used by organizations. These requirements have become drivers for the development of the in-memory computing paradigm, which enables the creation of applications running advanced queries and performing comp...
Book
This book constitutes the refereed proceedings of the five workshops that were organized in conjunction with the International Conference on Business Information Systems, BIS 2014, which took place in Larnaca, Cyprus, in May 2014. The 27 papers in this volume were carefully reviewed and selected from 53 submissions and were revised and extended aft...
Conference Paper
Full-text available
In this paper the current situation in organisations regarding the reuse of information is discussed. Problems of both information publishers and consumers are presented. Many of them can be avoided by adopting the new paradigm for sharing information, namely linked open data. Although this paradigm is getting on importance, being promoted by publi...
Book
This book constitutes the refereed proceedings of the four workshops that were organized in conjunction with the International Conference on Business Information Systems, BIS 2013, which took place in Poznań, Poland, in June 2013. BIS workshops give researchers the opportunity to share their preliminary ideas and first experimental results and to d...
Book
This book contains the refereed proceedings of the 16th International Conference on Business Information Systems, BIS 2013, held in Poznań, Poland, in June 2013. The theme of this year's conference was "Business Applications on the Move," reflecting the growing usage of mobile devices in business applications and its repercussions on business proce...
Chapter
Re-usability is frequently declared as sine qua non feature of modern ontology engineering. Although thoroughly examined in general theory of knowledge management models the re-usability issue is still barely a declaration in the domain of legal ontologies. The similar situation also applies to statute-specific ontologies. Those knowledge modeling...
Conference Paper
One of the main obstacles hampering the adoption of semantic technologies, is the lack of interest of users to create semantic content. In this paper, we focus on the incentives that may be applied and embedded within an application, in order to motivate users to create semantically annotated content. As an example, we show a semantically-enhanced...
Conference Paper
This paper focuses on a semantically-enhanced Social Web Recommendation application, called Taste It! Try It! It is a mobile restaurants' review and recommendation application based on a Linked Data source and integrated with a social network. The application is consuming Linked Data (while creating the reviews), producing semantic annotations (abo...
Conference Paper
Full-text available
This paper focuses on a semantically-enhanced Social Web Recommendation application, called Taste It! Try It! It is a mobile restaurants' review and recommendation application based on a Linked Data source and integrated with a social network. The application is consuming Linked Data (while creating the reviews), producing semantic annotations (abo...
Conference Paper
Full-text available
In the knowledge-based economy, organizations often use expert finding systems to identify new candidates or manage information about the current employees. In order to ensure the required level of precision of returned results, the expert finding systems often benefit from semantic technologies and use ontologies in order to represent gathered dat...
Book
This book constitutes the refereed proceedings of the four workshops that were organized in conjunction with the International Conference on Business Information Systems, BIS 2012, which took place in Vilnius, Lithuania, May 21-23, 2012. In addition, the papers from the Future Internet Symposium, which was organized in conjunction with BIS 2012, ar...
Article
W dzisiejszych czasach coraz więcej codziennych czynności związanych jest z wykorzystaniem systemów informatycznych i Internetu. Działania, jakie użytkownicy podejmują w sieci, np. przeglądanie stron, wpisy na forach, słuchanie muzyki, stanowią manifestację charakterystyk poszczególnych osób. Informacje o użytkownikach mogą być zebrane i przedstawi...
Book
This book contains the refereed proceedings of the 15th International Conference on Business Information Systems, BIS 2012, held in Vilnius, Lithuania, in May 2012.The 26 revised full papers were carefully reviewed and selected from 70 submissions. They are grouped into nine sessions on business process discovery, business process verification, ser...
Conference Paper
Building and utilizing users' models to the end of better customized education products, especially in e-learning, is beneficial for both users and companies they work for. However, there is no general solution enhancing users' choices concerning their long-term learning goals. In this paper, we introduce a method, that trough analysis of time-vari...
Article
Full-text available
Business Process Management (BPM) provides support for managing organizations’ processes and facilitates their adaptation to changing market conditions. Although various BPM solutions have been successfully applied in industry, there are still many open issues to be addressed, e.g., ensuring commitment of employees in process modelling and reengine...