Dr. Włodzimierz Lewoniewski Delivers Invited Talk at Arizona State University

At the invitation of Arizona State University, Dr. Włodzimierz Lewoniewski delivered a talk entitled “Methods and Tools for Automatic Quality Assessment of Wikipedia Articles and Their Information Sources”. The talk focused on the challenges associated with the automatic assessment of information quality in multilingual Wikipedia.

Artificial Intelligence in Sentiment Analysis of Multilingual Wikipedia: Classifiers vs. Large Language Models

An open-access paper by researchers from our Department entitled “Evaluating Multilingual Sentiment Classifiers Using an LLM-Annotated Wikipedia Benchmark” has been published. Authors of the work: Dr. Milena Stróżyna, Dr. Włodzimierz Lewoniewski, Izabela Czumałowska. The paper was presented at ACL 2026 in San Diego, held from July 2 to 7, 2026.

Wikimania 2025: analysis of Wikipedia articles on climate change (video)

During the Wikimania 2025 conference, the results of scientific research on the comparative analysis of Wikipedia articles on climate change in different language editions were presented. By leveraging open datasets, the study assessed the quality of articles and compared their popularity in various languages. For example, an analysis of over one billion internal links (wikilinks) on Wikipedia enabled the identification of the most frequently cited articles in each language edition.

Utilizing Citation Index and Synthetic Quality Measure to Compare Language Editions of Wikipedia

A research prepared by scientists from our Department was presented at Wiki Workshop 2025. The study delivers a comprehensive, topic-based analysis of Wikipedia articles across 55 language editions and employs an original approach that combines a citation index with a synthetic article-quality measure. A citation index was constructed by analysing 6.6 billion links between Wikipedia pages, enabling the identification of the most influential articles in each language edition.

The most cited scientific information sources in Wikipedia articles across various languages

The latest issue of the journal “Biblioteka” published an article on the analysis of citations to scientific works in Wikipedia. The analysis covered 332 million references in 61 million Wikipedia articles in 309 language versions. In order to standardize the metadata of important sources of information on multilingual Wikipedia, data from the OpenAlex, an open catalog of authors and scientific publications, were additionally used. The results of scientific research were … Read More

Automatic quality assessment of articles in multilingual Wikipedia and identification of its important information sources on various topics

An open scientific seminar of the Institute of Informatics and Quantitative Economics on automatic quality assessment of articles in multilingual Wikipedia and identification of important sources of its information on various topics was held at the Poznań University of Economics and Business. During the seminar, Dr. Włodzimierz Lewoniewski discussed the methods and tools used to analyze and evaluate content in a popular multilingual encyclopedia and ways of identifying and assessing … Read More

ACADEMIA: Information Quality on Wikipedia

The latest issue of the ACADEMIA magazine published an article on the automation of the content quality assessment process in multilingual Wikipedia. The work briefly presents the advantages and disadvantages of the open nature of this encyclopedia, differences in the quality assessment systems and distinctions for Wikipedia articles between language versions, and issues related to the assessment of the reliability of information sources.

Scientific sources of information in Wikipedia articles across various topics and languages

The results of scientific research of employees of our Department were published in the journal “Procedia Computer Science” by Elsevier on the ScienceDirect website. As part of the work, hundreds of millions of references in Wikipedia articles from various language versions were analyzed to identify scientific sources of information. Additionally, Wikipedia articles have been divided into various topics using information from Wikipedia projects and based on semantic knowledge bases – … Read More

From science to practice: identifying important sources of information on Wikipedia

Wikipedia, being a widely available source of information in the digital era, attaches great importance to the verifiability of its content, which is fundamental to its credibility and trust. The platform’s verifiability rules require that all information, especially controversial or controversial information, be supported by credible, published sources. This ensures that the content in Wikipedia articles is not based on personal opinion or original research. However, the subjective nature of … Read More

Guinness World Record for the longest time editing Wikipedia

The Polish Wikipedia community enthusiastically celebrated the website’s 22nd anniversary by taking on an extraordinary challenge – breaking the Guinness World Record for the longest joint editing of Wikipedia. The ambitious goal was achieved on September 26-30, 2023 – uninterrupted Wikipedia editing for 100 hours. The event was organized by the Wikimedia Polska and aimed not only to set a new record, but also to promote Polish Heritage.