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Introduction

This document is a section of the LexEVS 5.x Installation Guide.

Overview of LexEVS Services

The LexEVS package set represents a compressive set of software and services to load, publish, and access vocabulary (and do so in a variety of web-enabled and grid environments.) Cancer Centers can use the LexEVS package set to install NCI Thesaurus and NCI Metathesaurus content queryable via a rich application programming interface (API). LexEVS services can be used in numerous applications wherever vocabulary content is needed.

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  • Vocabulary service providers. Describes organizations currently supporting externalized API-level interfaces to vocabulary content for the caBIG® community.
  • Vocabulary integrators. Describes organizations within the caBIG® community that desire to integrate new vocabulary content to be served to the caBIG® community.
  • Vocabulary users. Describes the caBIG® community interested in utilizing vocabulary services within the context of other caBIG® projects.

LexEVS

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Components (

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Overview)

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  1. Service Management consists of programs to load, index, publish, and manage vocabulary content for the vocabulary server.

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  1. Application Programming Interface (API) is comprised of methods to support Lexical Operations, Graph Operations, and History Operations.

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  1. Documentation consists of detailed JavaDocs and Programmers Guide.

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  1. Examples are provided as sample source code for common vocabulary queries.

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  1. Test Suite is provided to validate the LexEVS installation.

The following graphic shows LexEVS service components:

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Figure 1 - LexEVS Service Components

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  • Service Metadata which comprises the Metadata coding scheme and Licensing.
  • Query Service which comprises Lexical Set Operations, Graph Operations, and History.
  • Service Manager which comprises Loaders and Indexers.
  • Extensions which comprises Plug-ins.

This graphic is an overview of LexEVS Service components as described above.Image Added

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Additional information about the LexEVS API is provided in the WIP Format LexEVS 5.x Programmer's Guide.

LexEVS components (

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Detailed)

The LexEVS installation includes the following components: *

  • Service Manager or Administrative Programs for managing LexEVS server including Loaders, Indexers and Service Metadata Queries.
    • ActivateScheme
    • ClearOrphanedResources
    • CodingSchemeSelectionMenu
    • DeactivateScheme
    • ExportLgXML
    • ExportOBO
    • ExportOWL
    • ListExtensions
    • ListSchemes
    • LoadFMA
    • LoadHL7RIM
    • LoadLgXML
    • LoadMetadata
    • LoadNCIHistory
    • LoadNCIMeta
    • LoadNCIThesOWL
    • LoadOBO
    • LoadOWL
    • LoadRadLex
    • LoadUMLSDatabase
    • LoadUMLSFiles
    • LoadUMLSHistory
    • LoadUMLSSemnet
    • RebuildIndex
    • RemoveIndex
    • RemoveMetadata
    • RemoveScheme
    • TagScheme
    • TransferScheme *
  • Query Service including Program Examples for common vocabulary functions using sample vocabulary and CodedNodeSet functions
    • **Lexical Set Operations
      • FindCodesForDescription
      • SoundsLike
      • Union
      • Intersection
      • Difference **
    • Graph Operations
      • FindPropsAndAssocForCode
      • FindRelatedCodes
      • FindTreeForCodeAndAssoc
  • LexEVS Automated Verification Test Suite
  • LexEVS Runtime jar (combined archive)
  • LexEVS Runtime components (combined archive with 3rd party jars outside of archive)
  • LexEVS Uninstaller
  • LexEVS License Terms and Conditions
  • Configuration files to enable you to customize your installation to meet your specific database, server, and other network needs
    • llbconfig.props
  • Documentation
    • JavaDocs
    • Links to:
      • LexEVS Programmer's Guide
      • LexEVS Installation Guide

Deployment

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Alternatives

The LexEVS local Runtime package has flexible database deployment alternatives depending on the underlying dbms. For dbms's like MySQL and PostGres the user can deploy terminologies contained in a single database or in multiple databases. Single database configurations allow the user to manage databases more effectively. Multiple data base configurations provide a little more transparency to the underlying terminology load. Some dbms's, like Oracle, require the single data base configuration.</html>

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