995 citations · 2.4k across the 265 of their papers we have counts for
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Topic Modelling of Empirical Text Corpora: Validity, Reliability, and Reproducibility in Comparison to Semantic Maps
Tobias Hecking, Loet Leydesdorff
Using the 6,638 case descriptions of societal impact submitted for evaluation in the Research Excellence Framework (REF 2014), we replicate the topic model (Latent Dirichlet Alloca…
Visualization and Analysis of Frames in Collections of Messages: Content Analysis and the Measurement of Meaning
Esther Vlieger, Loet Leydesdorff
A step-to-step introduction is provided on how to generate a semantic map from a collection of messages (full texts, paragraphs or statements) using freely available software and/o…
The semantic mapping of words and co-words in contexts
Loet Leydesdorff, Kasper Welbers
Meaning can be generated when information is related at a systemic level. Such a system can be an observer, but also a discourse, for example, operationalized as a set of documents…
Measuring the Meaning of Words in Contexts: An automated analysis of controversies about Monarch butterflies, Frankenfoods, and stem cells
Loet Leydesdorff, Iina Hellsten
Co-words have been considered as carriers of meaning across different domains in studies of science, technology, and society. Words and co-words, however, obtain meaning in sentenc…
Co-word Analysis using the Chinese Character Set
Loet Leydesdorff, Ping Zhou
Until recently, Chinese texts could not be studied using co-word analysis because the words are not separated by spaces in Chinese (and Japanese). A word can be composed of one or…