code: private void loadOffsetsFromFormat(File file, SSpaceFormat format) 
              throws IOException {
          this.format = format;
          spaceName = file.getName();
  
          // NOTE: Use a LinkedHashMap here because this will ensure that the
          // words are returned in the same row-order as the matrix.  This
          // generates better disk I/O behavior for accessing the matrix since
          // each word is directly after the previous on disk.
          termToOffset = new LinkedHashMap<String,Long>();
          long start = System.currentTimeMillis();
          int dims = -1;
          RandomAccessFile raf = null;
          RandomAccessBufferedReader lnr = null;
          switch (format) {
              case TEXT:
                  lnr = new RandomAccessBufferedReader(file);
                  dims = loadTextOffsets(lnr);
                  break;
              case BINARY:
                  raf = new RandomAccessFile(file, "r");
                  dims = loadBinaryOffsets(raf);
                  break;
              case SPARSE_TEXT:
                  lnr = new RandomAccessBufferedReader(file);
                  dims = loadSparseTextOffsets(lnr);
                  break;
              case SPARSE_BINARY:
                  raf = new RandomAccessFile(file, "r");
                  dims = loadSparseBinaryOffsets(raf);
                  break;
              default:
              assert false : format;
          }
          if (LOGGER.isLoggable(Level.FINE)) {
              LOGGER.fine("loaded " + format + " .sspace file in " +
                  (System.currentTimeMillis() - start) + "ms");
          }
      
          this.dimensions = dims;
          this.binarySSpace = raf;
          this.textSSpace = lnr;
      }
docs: Loads the words and offets for each word's vector in the semantic space
  file using the format as a guide to how the semantic space data is stored
  in the file.
  
  @param file a file containing semantic space data
  @param format the format of the data in the file
  
  @throws IOException if any I/O exception occurs when reading the semantic
  space data from the file