Lucene Cranfield Search Engine

Introduction

A Lucene demo for searching the Cranfield collection. It searches for each query in file cran.qry and displays the first two related documents in file cran.all.1400.

The results for the query with ID 27: papers on shock-sound wave interaction .
    SCORE: 7.306487, DOCUMENT ID: 64, TITLE: unsteady oblique interaction of a shock wave with plane disturbances .
    SCORE: 6.157679, DOCUMENT ID: 291, TITLE: sweepback effects in the turbulent boundary-layer shock-wave interaction .

The results for the query with ID 29: material properties of photoelastic materials .
    SCORE: 4.421124, DOCUMENT ID: 405, TITLE: tables of thermal properties of gases .
    SCORE: 4.305917, DOCUMENT ID: 553, TITLE: ablation of glassy materials around blunt bodies of revolution .

The workflow is as follows.

Getting Started

Prerequisites

• Install Java.
• Install Maven.

Building

mvn package

Class Diagram

classDiagram

namespace Lucene {
    class LuceneAnalyzer
    class LuceneSimilarity
    class LuceneScoreDoc
    class LuceneDocument
    class LuceneIndexSearcher
}

namespace Cran {
    class CranField {
        Field id$
        Field title$
        Field author$
        Field bibliography$
        Field words$

        String tag
        String name
    }

    class CranDocument {
        int id
        String title
        String author
        String bibliography
        String words
    }

    class CranParser {
        parseDocuments(text)$ List~CranDocument~
        parseQueries(text)$ List~CranQuery~
    }

    class CranQuery {
        int id
        String words
    }
}

CranParser ..> CranDocument
CranParser ..> CranQuery

class Indexer {
    index(List~CranDocument~, path)
}

Indexer --> LuceneAnalyzer
Indexer --> LuceneSimilarity
Indexer ..> CranField
Indexer ..> CranDocument

class Searcher {
    search(CranQuery, top) List~LuceneScoreDoc~
    documents(List~LuceneScoreDoc~) List~LuceneDocument~
    document(LuceneScoreDoc) LuceneDocument
}

Searcher --> LuceneIndexSearcher
Searcher --> LuceneAnalyzer
Searcher ..> LuceneScoreDoc
Searcher ..> LuceneDocument
Searcher ..> CranField
Searcher ..> CranQuery

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License

Distributed under the MIT License. See LICENSE for more information.