This is the PoliticalMashup ngram viewer. The ngram viewer makes it possible to visualise the frequency of a certain phrase (a combination of successive words) in the KB collection of digitised Dutch newspapers from 1840-1995. An ngram is a sequence of words, where e.g. 'minister' would be a 1-gram or unigram, 'prime minister' a 2-gram or bigram, 'deputy prime minister' a 3-gram or trigram, and so forth.
It is important to note that the distribution of KB newspapers over time is not uniform. The corpus shows a heavy bias in favour of newspapers published in the World War II period. In order to prevent each graph from looking the same, irrespective of the ngram used, the y-axis will display the relative frequency of an ngram in a particular year rather than the absolute term frequency.
How
Enter one or more phrases in the search box, up to a maximum of 5 words. A graph will display the occurences. By clicking on a dot in the graph, the collection can be searched for occurrences in a specific year. This enables researchers to access the scans themselves and the context.
Where
PoliticalMashup is a start-up project including the University of Amsterdam Informatics Dept., the University of Groningen Documentation Centre for Political Parties (DNPP), and the University of Twente Computer Linguistics Dept. The application itself was developed by Dispectu, the KB, Data Archiving and Networked Services (DANS), the Netherlands Organisation for Scientific Research (NWO) and PoliticalMashup.
Continue to the demo.
