Examples of Posting

ivory.core.data.index.Posting
Object representing a posting. A posting contains two elements: a docno and a score. In most cases, the score is the term frequency of a term within the document, but in the case of impact-based indexes, the score is the impact score. @author Jimmy Lin
org.terrier.structures.postings.Posting
This interface represents one posting in a posting list. From a Posting object, the id of the posting list entry (e.g. document id for inverted index, or term id for direct index), the frequency, and the length of the document can be accessed. @since 3.0 @author Craig Macdonald

Examples of ivory.core.data.index.Posting

    postings2.setCollectionDocumentCount(10);


    assertEquals(3, postings2.getDf());
    assertEquals(8, postings2.getCf());


    Posting posting = new Posting();


    PostingsReader reader = postings2.getPostingsReader();


    int arr[] = null;


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(13, posting.getDocno());
    assertEquals(5, posting.getScore());
    assertEquals(1, arr[0]);
    assertEquals(4, arr[1]);
    assertEquals(5, arr[2]);
    assertEquals(10, arr[3]);
    assertEquals(23, arr[4]);


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(14, posting.getDocno());
    assertEquals(2, posting.getScore());
    assertEquals(2, arr[0]);
    assertEquals(23, arr[1]);


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(24, posting.getDocno());
    assertEquals(1, posting.getScore());
    assertEquals(1, arr[0]);
  }

View Full Code Here

Examples of ivory.core.data.index.Posting


    // Verify tf and cf.
    assertEquals(3, postings2.getDf());
    assertEquals(8, postings2.getCf());


    Posting posting = new Posting();


    PostingsReader reader = postings2.getPostingsReader();


    int arr[] = null;


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(13, posting.getDocno());
    assertEquals(5, posting.getScore());
    assertEquals(1, arr[0]);
    assertEquals(4, arr[1]);
    assertEquals(5, arr[2]);
    assertEquals(10, arr[3]);
    assertEquals(23, arr[4]);


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(14, posting.getDocno());
    assertEquals(2, posting.getScore());
    assertEquals(2, arr[0]);
    assertEquals(23, arr[1]);


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(24, posting.getDocno());
    assertEquals(1, posting.getScore());
    assertEquals(1, arr[0]);


    // Set new tf and cf.
    postings2.setDf(6);
    postings2.setCf(16);


    // Verify tf and cf.
    assertEquals(6, postings2.getDf());
    assertEquals(16, postings2.getCf());


    reader = postings2.getPostingsReader();
    arr = null;


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(13, posting.getDocno());
    assertEquals(5, posting.getScore());
    assertEquals(1, arr[0]);
    assertEquals(4, arr[1]);
    assertEquals(5, arr[2]);
    assertEquals(10, arr[3]);
    assertEquals(23, arr[4]);


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(14, posting.getDocno());
    assertEquals(2, posting.getScore());
    assertEquals(2, arr[0]);
    assertEquals(23, arr[1]);


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(24, posting.getDocno());
    assertEquals(1, posting.getScore());
    assertEquals(1, arr[0]);


    PostingsListDocSortedPositional postings3 =
        PostingsListDocSortedPositional.create(postings2.serialize());
    postings3.setCollectionDocumentCount(20);


    // Verify tf and cf.
    assertEquals(6, postings2.getDf());
    assertEquals(16, postings2.getCf());


    reader = postings2.getPostingsReader();
    arr = null;


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(13, posting.getDocno());
    assertEquals(5, posting.getScore());
    assertEquals(1, arr[0]);
    assertEquals(4, arr[1]);
    assertEquals(5, arr[2]);
    assertEquals(10, arr[3]);
    assertEquals(23, arr[4]);


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(14, posting.getDocno());
    assertEquals(2, posting.getScore());
    assertEquals(2, arr[0]);
    assertEquals(23, arr[1]);


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(24, posting.getDocno());
    assertEquals(1, posting.getScore());
    assertEquals(1, arr[0]);
  }

View Full Code Here

Examples of ivory.core.data.index.Posting

        PostingsListDocSortedPositional.create(postings2a.serialize());


    postings2b.setCollectionDocumentCount(30);


    // Now merge and test.
    Posting p = new Posting();


    PostingsListDocSortedPositional merged;
    PostingsReader mergedReader;


    merged = PostingsListDocSortedPositional.create(PostingsListDocSortedPositional.merge(
        postings1b, postings2b, 30).serialize());


    merged.setCollectionDocumentCount(30);
    mergedReader = merged.getPostingsReader();


    assertEquals(7, merged.getNumberOfPostings());
    mergedReader.nextPosting(p);
    assertEquals(2, p.getDocno());
    assertEquals(3, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(11, p.getDocno());
    assertEquals(4, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(13, p.getDocno());
    assertEquals(5, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(14, p.getDocno());
    assertEquals(2, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(19, p.getDocno());
    assertEquals(1, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(24, p.getDocno());
    assertEquals(1, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(25, p.getDocno());
    assertEquals(2, p.getScore());


    merged = PostingsListDocSortedPositional.create(PostingsListDocSortedPositional.merge(
        postings2b, postings1b, 30).serialize());


    merged.setCollectionDocumentCount(30);
    mergedReader = merged.getPostingsReader();


    assertEquals(7, merged.getNumberOfPostings());
    mergedReader.nextPosting(p);
    assertEquals(2, p.getDocno());
    assertEquals(3, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(11, p.getDocno());
    assertEquals(4, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(13, p.getDocno());
    assertEquals(5, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(14, p.getDocno());
    assertEquals(2, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(19, p.getDocno());
    assertEquals(1, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(24, p.getDocno());
    assertEquals(1, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(25, p.getDocno());
    assertEquals(2, p.getScore());
  }

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Examples of ivory.core.data.index.Posting


  private static void testTerm(RetrievalEnvironment env, String term) {
    long startTime = System.currentTimeMillis();


    PostingsReader reader = null;
    Posting p = new Posting();
    int df = 0;
    String termOrig = term;
    String termTokenized = env.tokenize(termOrig)[0];


    LOG.info("term=" + termOrig + ", tokenized=" + termTokenized);

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Examples of ivory.core.data.index.Posting

        PostingsListDocSortedPositional.create(postings2a.serialize());


    postings2b.setCollectionDocumentCount(30);


    // Now merge and test.
    Posting p = new Posting();


    PostingsListDocSortedPositional merged;
    PostingsReader mergedReader;


    merged = PostingsListDocSortedPositional.create(PostingsListDocSortedPositional.merge(
        postings1b, postings2b, 30).serialize());


    merged.setCollectionDocumentCount(30);
    mergedReader = merged.getPostingsReader();


    assertEquals(2, merged.getNumberOfPostings());
    mergedReader.nextPosting(p);
    assertEquals(2, p.getDocno());
    assertEquals(3, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(13, p.getDocno());
    assertEquals(5, p.getScore());


    merged = PostingsListDocSortedPositional.create(PostingsListDocSortedPositional.merge(
        postings2b, postings1b, 30).serialize());


    merged.setCollectionDocumentCount(30);
    mergedReader = merged.getPostingsReader();


    assertEquals(2, merged.getNumberOfPostings());
    mergedReader.nextPosting(p);
    assertEquals(2, p.getDocno());
    assertEquals(3, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(13, p.getDocno());
    assertEquals(5, p.getScore());
  }

View Full Code Here

Examples of ivory.core.data.index.Posting

        PostingsListDocSortedPositional.create(postings2a.serialize());


    postings2b.setCollectionDocumentCount(30);


    // Now merge and test.
    Posting p = new Posting();


    PostingsListDocSortedPositional merged;
    PostingsReader mergedReader;


    merged = PostingsListDocSortedPositional.create(PostingsListDocSortedPositional.merge(
        postings1b, postings2b, 30).serialize());


    merged.setCollectionDocumentCount(30);
    mergedReader = merged.getPostingsReader();


    assertEquals(5, merged.getNumberOfPostings());
    mergedReader.nextPosting(p);
    assertEquals(2, p.getDocno());
    assertEquals(3, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(11, p.getDocno());
    assertEquals(4, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(13, p.getDocno());
    assertEquals(5, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(19, p.getDocno());
    assertEquals(1, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(25, p.getDocno());
    assertEquals(2, p.getScore());


    merged = PostingsListDocSortedPositional.create(PostingsListDocSortedPositional.merge(
        postings2b, postings1b, 30).serialize());


    merged.setCollectionDocumentCount(30);
    mergedReader = merged.getPostingsReader();


    assertEquals(5, merged.getNumberOfPostings());
    mergedReader.nextPosting(p);
    assertEquals(2, p.getDocno());
    assertEquals(3, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(11, p.getDocno());
    assertEquals(4, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(13, p.getDocno());
    assertEquals(5, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(19, p.getDocno());
    assertEquals(1, p.getScore());


    mergedReader.nextPosting(p);
    assertEquals(25, p.getDocno());
    assertEquals(2, p.getScore());
  }

View Full Code Here

Examples of ivory.core.data.index.Posting


  private static void testTerm(RetrievalEnvironment env, String term) {
    long startTime = System.currentTimeMillis();


    PostingsReader reader = null;
    Posting p = new Posting();
    int df = 0;
    String termOrig = term;
    String termTokenized = env.tokenize(termOrig)[0];


    LOG.info("term=" + termOrig + ", tokenized=" + termTokenized);

View Full Code Here

Examples of ivory.core.data.index.Posting


  private static void testTerm(RetrievalEnvironment env, String term) {
    long startTime = System.currentTimeMillis();


    PostingsReader reader = null;
    Posting p = new Posting();
    int df = 0;
    String termOrig = term;
    String termTokenized = env.tokenize(termOrig)[0];


    LOG.info("term=" + termOrig + ", tokenized=" + termTokenized);

View Full Code Here

Examples of ivory.core.data.index.Posting

    postings2.setCollectionDocumentCount(10);


    assertEquals(3, postings2.getDf());
    assertEquals(8, postings2.getCf());


    Posting posting = new Posting();


    PostingsReader reader = postings2.getPostingsReader();


    int arr[] = null;


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(13, posting.getDocno());
    assertEquals(5, posting.getTf());
    assertEquals(1, arr[0]);
    assertEquals(4, arr[1]);
    assertEquals(5, arr[2]);
    assertEquals(10, arr[3]);
    assertEquals(23, arr[4]);


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(14, posting.getDocno());
    assertEquals(2, posting.getTf());
    assertEquals(2, arr[0]);
    assertEquals(23, arr[1]);


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(24, posting.getDocno());
    assertEquals(1, posting.getTf());
    assertEquals(1, arr[0]);
  }

View Full Code Here

Examples of ivory.core.data.index.Posting


    // Verify tf and cf.
    assertEquals(3, postings2.getDf());
    assertEquals(8, postings2.getCf());


    Posting posting = new Posting();


    PostingsReader reader = postings2.getPostingsReader();


    int arr[] = null;


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(13, posting.getDocno());
    assertEquals(5, posting.getTf());
    assertEquals(1, arr[0]);
    assertEquals(4, arr[1]);
    assertEquals(5, arr[2]);
    assertEquals(10, arr[3]);
    assertEquals(23, arr[4]);


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(14, posting.getDocno());
    assertEquals(2, posting.getTf());
    assertEquals(2, arr[0]);
    assertEquals(23, arr[1]);


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(24, posting.getDocno());
    assertEquals(1, posting.getTf());
    assertEquals(1, arr[0]);


    // Set new tf and cf.
    postings2.setDf(6);
    postings2.setCf(16);


    // Verify tf and cf.
    assertEquals(6, postings2.getDf());
    assertEquals(16, postings2.getCf());


    reader = postings2.getPostingsReader();
    arr = null;


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(13, posting.getDocno());
    assertEquals(5, posting.getTf());
    assertEquals(1, arr[0]);
    assertEquals(4, arr[1]);
    assertEquals(5, arr[2]);
    assertEquals(10, arr[3]);
    assertEquals(23, arr[4]);


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(14, posting.getDocno());
    assertEquals(2, posting.getTf());
    assertEquals(2, arr[0]);
    assertEquals(23, arr[1]);


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(24, posting.getDocno());
    assertEquals(1, posting.getTf());
    assertEquals(1, arr[0]);


    PostingsListDocSortedPositional postings3 =
        PostingsListDocSortedPositional.create(postings2.serialize());
    postings3.setCollectionDocumentCount(20);


    // Verify tf and cf.
    assertEquals(6, postings2.getDf());
    assertEquals(16, postings2.getCf());


    reader = postings2.getPostingsReader();
    arr = null;


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(13, posting.getDocno());
    assertEquals(5, posting.getTf());
    assertEquals(1, arr[0]);
    assertEquals(4, arr[1]);
    assertEquals(5, arr[2]);
    assertEquals(10, arr[3]);
    assertEquals(23, arr[4]);


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(14, posting.getDocno());
    assertEquals(2, posting.getTf());
    assertEquals(2, arr[0]);
    assertEquals(23, arr[1]);


    reader.nextPosting(posting);
    arr = reader.getPositions();
    assertEquals(24, posting.getDocno());
    assertEquals(1, posting.getTf());
    assertEquals(1, arr[0]);
  }

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