@Override
public IntIterator iterator() {
try {
System.err.print(".");
return new DataInputStreamAsIntIterator(CLIOpts.openInputAsMaybeZipped(file), W);
} catch (IOException x) {
throw new RuntimeException(x);
}
}
public static void main(String[] args) throws Exception {
final CLIOpts opts = new CLIOpts(args);
final boolean useUNK = opts.flag("unk", "Output low-frequency tokens as <UNK>");
final boolean stopWords = opts.flag("stopWords", "Retain stop words");
final File corpusFile = opts.roFile("corpus[.gz|.b2]", "The integerized corpus");
// final int W = opts.intValue("W", "Total number of distinct tokens in corpus");
final File wordMapFile = opts.roFile("wordMap", "The word map");
final File freqFile = opts.roFile("freqs", "The file of token frequencies");
final int freqMin = opts.intValue("freqMin", "The minimum frequency to accept");
final int lenMin = opts.intValue("lenMin", "The minimum document length to accept");
final File outFile = opts.woFile("out[.gz|.bz2]", "The file to write to");
if (!opts.verify(CleanCorpus.class)) {
return;
}
final int W = WordMap.calcW(wordMapFile);
int[] freqArray = readFreqs(freqFile, W);
final int freqMax = stopWords ? Integer.MAX_VALUE : freqArray[0];
final DataInputStream corpusIn;
if (corpusFile.getName().endsWith(".gz")) {
corpusIn = new DataInputStream(new GZIPInputStream(new FileInputStream(corpusFile)));
} else if (corpusFile.getName().endsWith(".bz2")) {
corpusIn =
new DataInputStream(new BZip2CompressorInputStream(new FileInputStream(corpusFile)));
} else {
corpusIn = new DataInputStream(new FileInputStream(corpusFile));
}
final DataOutputStream dataOut;
if (outFile.getName().endsWith(".gz")) {
dataOut = new DataOutputStream(new GZIPOutputStream(new FileOutputStream(outFile)));
} else if (corpusFile.getName().endsWith(".bz2")) {
dataOut =
new DataOutputStream(new BZip2CompressorOutputStream(new FileOutputStream(outFile)));
} else {
dataOut = new DataOutputStream(new FileOutputStream(outFile));
}
int remainingVocab = 0;
for (int i = 1; i < freqArray.length; i++) {
if (freqArray[i] >= freqMin && freqArray[i] < freqMax) {
remainingVocab++;
}
}
System.err.println("Remaining: " + remainingVocab);
cleanCorpus(corpusIn, dataOut, freqArray, freqMin, freqMax, lenMin, useUNK ? W + 1 : -1);
}
