Package ivory.core.data.index

Examples of ivory.core.data.index.PostingsReader

229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
    return collectionSize;
  }

  public PostingsReader getPostingsReader(Expression exp) {
    //LOG.info("**getPostingsReader("+exp+")");;
    PostingsReader postingsReader = null;
    try {
      if (exp.getType().equals(Expression.Type.OD)) {
        int gapSize = exp.getWindow();
        String[] terms = exp.getTerms();

        List<PostingsReader> readers = new ArrayList<PostingsReader>();
        for (int i = 0; i < terms.length; i++) {
          PostingsReader reader = constructPostingsReader(terms[i]);
          if(reader != null)
            readers.add(reader);
        }

        postingsReader = new ProximityPostingsReaderOrderedWindow(readers.toArray(new PostingsReader[0]), gapSize);
      } else if (exp.getType().equals(Expression.Type.UW)) {
        int windowSize = exp.getWindow();
        String[] terms = exp.getTerms();

        List<PostingsReader> readers = new ArrayList<PostingsReader>();
        for (int i = 0; i < terms.length; i++) {
          PostingsReader reader = constructPostingsReader(terms[i]);
          if(reader != null)
            readers.add(reader);
        }

        postingsReader = new ProximityPostingsReaderUnorderedWindow(readers.toArray(new PostingsReader[0]), windowSize);
View Full Code Here
267
268
269
270
271
272
273
274
275
276
277
    return postingsReader;
  }

  protected PostingsReader constructPostingsReader(String expression) throws Exception {
    //LOG.info("**constructPostingsReader("+expression+")");
    PostingsReader reader = null;

    if (mPostingsReaderCache != null) {
      reader = mPostingsReaderCache.get(expression);
    }

View Full Code Here
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
  public void writeCollectionAverageDocumentLength(float n) { FSProperty.writeFloat(fs, appendPath(indexPath, "property.CollectionAverageDocumentLength"), n); }

  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);
    reader = env.getPostingsReader(new Expression(termTokenized));
    df = reader.getNumberOfPostings();
    LOG.info("First ten postings: ");
    for (int i = 0; i < (df < 10 ? df : 10); i++) {
      reader.nextPosting(p);
      System.out.print(p);
    }

    System.out.println("\n");
View Full Code Here
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
        out = fs.create(new Path(outputPath + "/" + i));
      }

      try {
        PostingsList pl = env.getPostingsList(env.getTermFromId(i));
        PostingsReader reader = pl.getPostingsReader();
        Signature filter = null;

        //Decide which filter to use based on the configuration parameters
        int df = pl.getDf();
        if (df <= bloomConfig.getIdentityHashThreshold()) {
          filter = new BloomFilterHash(df * bloomConfig.getBitsPerElement(),
                                       bloomConfig.getHashCount());
        } else {
          filter = new BloomFilterIdentityHash(bloomConfig.getDocumentCount());
        }

        while (reader.nextPosting(posting)) {
          filter.add(newDocids[posting.getDocno()]);
        }

        out.writeInt(i);
        out.writeInt(df);
View Full Code Here
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
        LOGGER.info(i + " posting lists prepared...");
      }

      try {
        PostingsList pl = env.getPostingsList(env.getTermFromId(i));
        PostingsReader reader = pl.getPostingsReader();

        int[] data = new int[pl.getDf()];
        int index = 0;
        while (reader.nextPosting(posting)) {
          data[index++] = newDocids[posting.getDocno()];
        }
        Arrays.sort(data);
        CompressedPostings compPostings = CompressedPostings.newInstance(data);
View Full Code Here
TOP

Related Classes of ivory.core.data.index.PostingsReader

  • ivory.bloomir.data.CompressedPostingsIO
  • ivory.bloomir.data.SignatureIO
  • ivory.core.data.index.PostingsListDocSortedPositionalPForDeltaTest
  • ivory.core.data.index.PostingsListDocSortedPositionalTest
  • ivory.core.RetrievalEnvironment
  • ivory.ffg.preprocessing.GenerateCompressedPositionalPostings
  • ivory.pwsim.PCP$MyMapper
  • ivory.smrf.model.expander.UnigramLatentConceptExpander
    • Copyright © 2018 www.massapicom. All rights reserved.
    All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.