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Integrating NLP with Linked Data and RDF: the NIF format (hands on)

Ciro Baron Neto Ph.D student at University of Leipzig

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Overview• Github NLP2RDF web page overview

and NIF Online demos (Dashboard, Combinator...)• Examples–Example 1: How to annotate string• using Snowball Steamer and OpenNLP

–Example 2: • Query generated NIF data and Querying Brown Corpus

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NLP2RDF GitHub Website

• https://github.com/NLP2RDF/

• /home/ciro/websites/github/github.com/NLP2RDF/index.html

https://github.com/NLP2RDF/file:///home/ciro/websites/github/github.com/NLP2RDF/index.html

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dashboard.nlp2rdf.aksw.org

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nlp2rdf.aksw.org

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Example 1: Snowball Stemmer Wrapper

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Snowball Stemmer Wrapper

• Stemming algorithm is a process for removing suffixes from words.–CONNECT• CONNECTED• CONNECTION• CONNECTING• CONNECTIONS

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Snowball Stemmer Wrapper• 1. Open the USB stick folder• 2. Go to “NIF_tutorial_hands_on_jars” folder • 3. Open the “instructions.txt” file in a text

editor• 4. Open a terminal• 5. Go to the “jar” folder

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Snowball Stemmer Wrapper• Copy the second command of the

instructions.txt“java -jar snowball.jar -f text -i 'My favorite actress is Natalie Portman.'“• -f is used to define the format• -i is used to define the input

• Paste in the terminal

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Snowball Stemmer Wrapper

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Snowball Stemmer Wrapper

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Snowball Stemmer Wrapper

NIF Standard AnnotationsNIF Offset

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Snowball Stemmer Wrapper

NIF Standard Annotations

Snowball StemNIF Offset

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OpenNLP Wrapper• Back to the terminal and use the first command

of the instructions.txtjava -jar opennlp.jar -f text -i 'My favorite actress is Natalie Portman.' -modelFolder ../model/

• The -modelFolder parameter set the folder that contains the POS tagging OpenNLP trained models and tokenization.• You might add the parameter “--outfile

myAnnotatedFile.ttl“ to store the triples in a file.

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Example 2: Query Brown Corpus

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Querying with Twinkle • Open the “/twinkle/example” folder• Open the NIF_query_example file

in a text editor and copy the query• Open the “/twinle” folder and run

the command:java -jar twinkle.jar

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Querying Brown Corpus

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Querying Brown Corpus

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Querying Brown Corpus

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Querying Brown Corpus

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Querying Brown Corpus

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Querying Brown Corpus

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Querying Brown Corpus

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Querying Brown Corpus

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Querying Brown Corpus

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Querying Brown Corpus

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Exercise 3: Querying your own NIF annotated string

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Querying your own NIF annotated string

1. Annotate your string using one of the wrappers2. Save your annotated sentence to a file (using “--outfile”)3. Open Twinkle4. Query your string using Twinkle

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• Query your annotated string:– nif:Context– nif:Sentence– nif:anchorOf – nif:oliaCategory– nif:oliaLink… or practice with Brown Corpus!

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Thank you!

http://site.nlp2rdf.org/NLP2RDF Google+ Community

http://site.nlp2rdf.org/

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