Automatic Sentiment Analysis Using the Textual Pattern Content Similarity in Natural Language. - Jan Zizka; Frantisek Darena (TSD, 2010)

Mining textual significant expressions reflecting opinions in natural languages. - Jan Zizka; Frantisek Darena (ISDA, 2011)

Mining Significant Words from Customer Opinions Written in Different Natural Languages. - Jan Zizka; Frantisek Darena (TSD, 2011)

Clustering a Very Large Number of Textual Unstructured Customers' Reviews in English. - Jan Zizka; Karel Burda; Frantisek Darena (AIMSA, 2012)

Grouping of Customer Opinions Written in Natural Language Using Unsupervised Machine Learning. - Frantisek Darena; Jan Zizka; Karel Burda (SYNASC, 2012)

SuDoC: Semi-unsupervised Classification of Text Document Opinions Using a Few Labeled Examples and Clustering. - Frantisek Darena; Jan Zizka (FQAS, 2013)

Revealing Prevailing Semantic Contents of Clusters Generated from Untagged Freely Written Text Documents in Natural Languages. - Jan Zizka; Frantisek Darena (TSD, 2013)

Approaches to samples selection for machine learning based classification of textual data. - Frantisek Darena; Jan Zizka (Comput. Informatics, 2013)

Interdependence of Text Mining Quality and the Input Data Preprocessing. - Frantisek Darena; Jan Zizka (CSOC (1), 2015)

Automated Mining of Relevant N-grams in Relation to Predominant Topics of Text Documents. - Jan Zizka; Frantisek Darena (TSD, 2015)

The Comparison of Effects of Relevant-Feature Selection Algorithms on Certain Social-Network Text-Mining Viewpoints. - Jan Zizka; Frantisek Darena (CSOC (1), 2017)

Machine Learning-Based Analysis of the Association Between Online Texts and Stock Price Movements. - Frantisek Darena; Jonás Petrovský; Jan Zizka; Jan Prichystal (Inteligencia Artif., 2018)

Preprocessing of normative documents for interactive question answering. - Ivo Pisarovic; Frantisek Darena; David Procházka; Vít Janis (Expert Syst. Appl., 2022)

Conversational interfaces for unconventional access to business relational data structures. - Pavel Kostelník; Frantisek Darena (Data Technol. Appl., 2022)

Activating supply chain business models' value potentials through Systems Engineering. - Jochen Nuerk; Frantisek Darena (Syst. Eng., 2023)