Blog Archives

Human Face Detection with R

March 22, 2019
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Human Face Detection with R

Doing human face detection with computer vision is probably something you do once unless you work for police departments, you work in the surveillance industry or for the Chinese government. In order to reduce the time you lose on that small exercise, bnosac created a small R package (source code available at https://github.com/bnosac/image) which wraps the weights of a...

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Making thematic maps for Belgium

February 26, 2019
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Making thematic maps for Belgium

For people from Belgium working in R with spatial data, you can find excellent workshop material on creating thematic maps for Belgium at https://workshop.mhermans.net/thematic-maps-r/index.html by Maarten Hermans (researcher at the HIVA - Onderzoeksinstituut voor Arbeid en Samenleving - https://mhermans.net). The plots are heavily based on BelgiumMaps.Statbel - an R package from bnosac released 2 years ago (more info at...

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An overview of the NLP ecosystem in R (#nlproc #textasdata)

February 4, 2019
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An overview of the NLP ecosystem in R (#nlproc #textasdata)

At BNOSAC, R is used a lot to perform text analytics as it is an excellent tool that provides anything a data scientist needs to perform data analysis on text in a business settings. For users unfamiliar with all the possibilities that the wealth of R ...

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Neural Text Modelling with R package ruimtehol

January 15, 2019
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Last week the R package ruimtehol was released on CRAN (https://github.com/bnosac/ruimtehol) allowing R users to easily build and apply neural embedding models on text data. It wraps the 'StarSpace' library https://github.com/facebookresearch/StarSpace allowing users to calculate word, sentence, article, document, webpage, link and entity 'embeddings'. By using the 'embeddings', you can perform text based multi-label classification, find similarities between texts and...

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You did a sentiment analysis with tidytext but you forgot to do dependency parsing to answer WHY is something positive/negative

January 8, 2019
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You did a sentiment analysis with tidytext but you forgot to do dependency parsing to answer WHY is something positive/negative

A small note on the growing list of users of the udpipe R package. In the last month of 2018, we've updated the package on CRAN with some noticeable changes The default models which are now downloaded with the function udpipe_download_model are now models built on Universal Dependencies 2.3 (released on 2018-11-15) This means udpipe now has models for 60 languages....

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Starspace for NLP #nlproc

December 4, 2018
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Starspace for NLP #nlproc

Our recent addition to the NLP R universe is called R package ruimtehol which is open sourced at https://github.com/bnosac/ruimtehol This R package is a wrapper around Starspace which provides a neural embedding model for doing the following on text: Text classification Learning word, sentence or document level embeddings Finding sentence or document similarity Ranking web documents Content-based recommendation (e.g. recommend text/music based on the...

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crfsuite for natural language processing

October 29, 2018
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crfsuite for natural language processing

A new R package called crfsuite supported by BNOSAC landed safely on CRAN last week. The crfsuite package (https://github.com/bnosac/crfsuite) is an R package specific to Natural Language Processing and allows you to easily build and apply models for named entity recognition text chunking part of speech tagging intent recognition or classification of any category you have in mind The focus of the...

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Last call for the course on text mining of next week

October 2, 2018
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Last call for the course on text mining of next week

Last call for the 2-day course on Text Mining with R, held next week (08-09 October 2018) in Brussels, Belgium. Subscribe at https://www.eventbrite.co.uk/e/dsb2018-text-mining-with-r-jan-wijffels-bnosac-session-03-04-tickets-50586501588 You'll learn during that course the following: Cleaning of text data, regular expressions String distances Graphical displays of text data Natural language processing: stemming, parts-of-speech tagging, tokenization, lemmatisation, dependency parsing, noun phrase detection and keyword extraction Entity recognition & chunking using Conditional...

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udpipe version 0.7 for Natural Language Processing (#NLP) alongside #tidytext, #quanteda, #tm

September 11, 2018
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udpipe version 0.7 for Natural Language Processing (#NLP) alongside #tidytext, #quanteda, #tm

This blogpost announces the release of the udpipe R package version 0.7 on CRAN. udpipe is an R package which does tokenization, parts of speech tagging, lemmatization, morphological feature tagging and dependency parsing. It's main feature is that it is a lightweight R package which works on more than 50 languages and gives you rich NLP output out of...

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How to detect hatespeech in plain text #schildnvrienden

September 7, 2018
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How to detect hatespeech in plain text #schildnvrienden

Yesterday there was a pretty controversial Pano TV documentary called 'Wie is Schild & Vrienden echt' at the national television channel 'één' (https://www.vrt.be/vrtnu/a-z/pano/2018/pano-s2018a10). The documentary revealed the internal communication of a right-wing group from Belgium, called #schildnvrienden. After that, there was a show by Van Gils & gasten where a representative of the police explained or tried not to explain...

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