Download Tika in action by Chris Mattmann PDF

By Chris Mattmann


Tika in Action is a hands-on advisor to content material mining with Apache Tika. The book's many examples and case reviews provide real-world adventure from domain names starting from se's to electronic asset administration and clinical facts processing.

About the Technology

Tika is an Apache toolkit that has outfitted into it every little thing you and your app want to know approximately dossier codecs. utilizing Tika, your purposes can realize and extract content material from electronic files in nearly any layout, together with unique ones.

About this Book

Tika in Action is the last word consultant to content material mining utilizing Apache Tika. you are going to how one can pull usable info from differently inaccessible resources, together with web media and dossier data. This example-rich booklet teaches you to construct and expand purposes in response to real-world adventure with se's, electronic asset administration, and clinical information processing. as well as architectural overviews, you can find designated chapters on positive aspects like metadata extraction, computerized language detection, and customized parser development.

This booklet is written for builders who're new to either Scala and raise and covers simply enough Scala to get you started.

buy of the print publication comes with a suggestion of a loose PDF, ePub, and Kindle booklet from Manning. additionally to be had is all code from the publication.

What's Inside

  • Crack MS notice, PDF, HTML, and ZIP
  • Integrate with se's, CMS, and different information sources
  • Learn via experimentation
  • Many examples

This e-book calls for no earlier wisdom of Tika or textual content mining recommendations. It assumes a operating wisdom of Java.


Table of Contents

  1. The case for the electronic Babel fish
  2. Getting all started with Tika
  3. The info landscape
  5. Document variety detection
  6. Content extraction
  7. Understanding metadata
  8. Language detection
  9. What's in a file?
  10. PART three INTEGRATION AND complicated USE
  11. The mammoth picture
  12. Tika and the Lucene seek stack
  13. Extending Tika
  15. Powering NASA technology info systems
  16. Content administration with Apache Jackrabbit
  17. Curating melanoma learn information with Tika
  18. The vintage seek engine example

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Extra info for Tika in action

Example text

MIME DATABASE Several design considerations in Tika’s MIME framework pervade its current reification in the Tika library. First and foremost, we wanted Tika to support a flexible mechanism to define media types, per the discussion on IANA and its rich repository and media type model discussed earlier. Because the IANA MIME specification and the aforementioned RFCs were forward-looking, they defined a mechanism procedurally for adding additional media types as they’re created—we desired this same flexibility for Tika’s MIME repository.

Metadata object instance, and adding the extracted metadata to that object. ParseContext object, containing the returned state from the parser, including the extracted text and metadata. The decision of how to deal with extracted metadata boils down to the metadata’s lifecycle. Questions include, what should Tika do with existing metadata keys (overwrite or keep)? Should Tika return a completely new Metadata object instance during each parse? There are benefits of allowing each scenario. For example, MIME detection can benefit from a provided metadata “hint”—whereas creating a new Metadata object and returning it per parse simplifies the key management and merge issues during metadata extraction.

The final step is language identification. Language identification is a process that discerns what language a document is codified in. Search engines can use this information to decide whether a link to an associated translation service should be provided along with the original document. 5. As can be gleaned from the discussion thus far, Tika strives to offer the necessary functionality required for dealing with the heterogeneity of modern information content. Search is only one application domain where Tika provides necessary services.

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