Building the Multilingual Web of Data. Integrating NLP with Linked Data and RDF using the NLP Interchange Format
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1 Building the Multilingual Web of Data Integrating NLP with Linked Data and RDF using the NLP Interchange Format Presenter name 1
2 Outline 1. Introduction 2. NIF Basics 3. NIF corpora 4. NIF tools & services 2
3 Introduction 3
4 LOD-aware NLP services Not only data, but also LOD-aware services using: Lexica and dictionaries in RDF (lemon model) Training data for NLP in RDF (NIF model) Service metadata descriptions in RDF Combination with real world facts (i.e. DBpedia or Geoname) Long Term Goal index of tools and data users can easily produce ready-made, preconfigured NLP services and pipelines freemium / pay-per use business models 4
5 NLP2RDF project Realize this long-term goal Sustainably maintain and consolidate results from short-term projects Bootstrap the Eco-System 5
6 NLP2RDF: NLP Interchange Format The NLP Interchange Format (NIF) is an RDF/OWL-based format that aims to achieve interoperability between Natural Language Processing (NLP) tools, language resources and annotations. 6
7 NLP2RDF: NLP Interchange Format In a nutshell: Way to mint URIs for arbitrary strings and content of documents on the web 7
8 NLP2RDF: NLP Interchange Format In a nutshell: Way to mint URIs for arbitrary strings and content of documents on the web Logical formalisation of strings and annotations via an ontology 8
9 NLP2RDF: NLP Interchange Format In a nutshell: Way to mint URIs for arbitrary strings and content of documents on the web Logical formalisation of strings and annotations via an ontology Quick and easy format 9
10 NLP2RDF: NLP Interchange Format In a nutshell: Way to mint URIs for arbitrary strings and content of documents on the web Logical formalisation of strings and annotations via an ontology Quick and easy format Builds on existing standards, e.g. RDF, LAF/GrAF, RFC
11 NLP2RDF: NLP Interchange Format In a nutshell: Way to mint URIs for arbitrary strings and content of documents on the web Logical formalisation of strings and annotations via an ontology Quick and easy format Builds on existing standards, e.g. RDF, LAF/GrAF, RFC 5147 Reusability of RDF tools and implementation 11
12 NLP2RDF: NLP Interchange Format In a nutshell: Way to mint URIs for arbitrary strings and content of documents on the web Logical formalisation of strings and annotations via an ontology Quick and easy format Builds on existing standards, e.g. RDF, LAF/GrAF, RFC 5147 Reusability of RDF tools and implementation Decreases development cost for integration 12
13 NIF: Motivation Developers nightmare: All tools belong to similar class of NLP tools Fulfill similar functions but often not interoperable ecosystems 13
14 NIF: Motivation Developers nightmare: All tools belong to similar class of NLP tools Fulfill similar functions but often not interoperable ecosystems All have: Heterogeneous output formats (JSON, XML, ) 14
15 NIF: Motivation Developers nightmare: All tools belong to similar class of NLP tools Fulfill similar functions but often not interoperable ecosystems All have: Heterogeneous output formats (JSON, XML, ) Heterogeneous API parameters 15
16 NIF: Motivation Developers nightmare: All tools belong to similar class of NLP tools Fulfill similar functions but often not interoperable ecosystems All have: Heterogeneous output formats (JSON, XML, ) Heterogeneous API parameters Heterogeneous way of annotating text: 16
17 NIF: Motivation Developers nightmare: All tools belong to similar class of NLP tools Fulfill similar functions but often not interoperable ecosystems All have: Heterogeneous output formats (JSON, XML, ) Heterogeneous API parameters Heterogeneous way of annotating text: Some remove HTML internally, offsets not usable 17
18 NIF: Motivation Developers nightmare: All tools belong to similar class of NLP tools Fulfill similar functions but often not interoperable ecosystems All have: Heterogeneous output formats (JSON, XML, ) Heterogeneous API parameters Heterogeneous way of annotating text: Some remove HTML internally, offsets not usable Some use byte offset instead of char offset 18
19 Outline 1. Introduction 2.NIF Basics 3. NIF corpora 4. NIF tools & services 19
20 NIF architecture 20
21 NIF architecture 21
22 NIF architecture 22
23 NIF architecture 23
24 NIF architecture 24
25 NIF architecture 25
26 NIF architecture 26
27 NIF architecture 27
28 NIF architecture 28
29 NIF architecture 29
30 NIF architecture 30
31 Annotations 31
32 Annotations 32
33 Annotations 33
34 Annotations 34
35 Example: Tripadvisor Corpus Corpus contains hotel reviews and review metadata 1760 semi-structured files In NIF: every file's content becomes one nif:context resource Strings in the file can be adressed via URIs 35
36 Context 36
37 Context Adress the content of a document nif:isstring contains document content 37
38 Context Adress the content of a document nif:isstring contains document content Note that in NIF the document is!= content of the document two different documents can have the same content => must not have the same URI 38
39 other Strings 39
40 other Strings Adress arbitrary strings in the document Use string offsets in relation to context to adress strings nif:anchorof contains the string Additional properties can now be added to the string 40
41 other Strings a tripadvisor:review ; Adress arbitrary strings in the document Use string offsets in relation to context to adress strings nif:anchorof contains the string Additional properties can now be added to the string 41
42 Words and Phrases Sentiment values, POS tags and other annotations etc can now be added to words and phrases 42
43 String counting 43
44 Ontology 44
45 Ontology 45
46 Ontology 46
47 Ontology 47
48 Ontology 48
49 Demo: 49
50 Demo: 50
51 Outline 1. Introduction 2. NIF Basics 3.NIF corpora 4. NIF tools & services 51
52 NIF corpora overview Name Size (Triple) Wikilinks 500M News K RSS K Reuters-128 7K Spotlight 3K KORE50 2K Brown 500K URL Wikipedia abstract corpus in progress : Tag nif on datahub 52
53 Wikilinks corpus Overview Large scale coreference resolution corpus by Umass / Google Over 10M crawled websites that contain text (Named Entities) that link to Wikipedia Converted to the NIF format and published as LOD: Additional processing done to extract relevant text snippets, add Dbpedia ontology classes and coarse-grained classes (entity types) Over 500 million triples, 79GB LOD, 12GB gzipped dumps Over 30 million links to over 3 million entities 53
54 Brown corpus Overview Converted to the NIF format and published as LOD: Corpus showcases handling of POS tags in NIF POS tags: mapped via OliA to predefined categories <#char=643,647> a nif:string, nif:word, nif:rfc5147string ; nif:anchorof "Jury"^^xsd:string ; nif:referencecontext <#char=0,> ; nif:olialink brown:nn ; nif:sentence <#char=619,777> ; nif:beginindex "643"^^xsd:nonNegativeInteger ; nif:endindex "647"^^xsd:nonNegativeInteger. Categories can be used to query all resources of a certain POS regardless of tagset used in the corpus 54
55 Brown corpus POS tags 55
56 Brown corpus POS tags Querying all nouns using the OliA mapping 56
57 Brown corpus POS tags Querying all nouns using the OliA mapping 57
58 Outline 1. Introduction 2. NIF Basics 3. NIF corpora 4.NIF tools & services 58
59 NIF tools Available NIF tools : Stanford Core NLP OpenNLP RDFace Validator ConLL converter... 59
60 NIF tools: DBpedia Spotlight 60
61 NIF tools: Stanford Core 61
62 NIF tools: Stanford Core 62
63 NIF tools: Stanford Core 63
64 NIF tools: Stanford Core 64
65 NIF tools: Stanford Core 65
66 NIF tools: Stanford Core 66
67 NIF tools: Stanford Core 67
68 Done! Thank you very much!
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