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Minor fixes: unused parameter, factor optional components into a central header.
git-svn-id: https://mosesdecoder.svn.sourceforge.net/svnroot/mosesdecoder/trunk@3849 1f5c12ca-751b-0410-a591-d2e778427230
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kenlm/README
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kenlm/README
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Language model inference code by Kenneth Heafield <infer at kheafield.com>
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The official website is http://kheafield.com/code/mt/infer.html . If you're a decoder developer, please download the latest version from there instead of copying from another decoder.
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The official website is http://kheafield.com/code/mt/infer.html . If you're a decoder developer, please download the latest version from there instead of copying from Moses.
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This documentation is directed at decoder developers.
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Currently, it loads an ARPA file in 2/3 the time SRI takes and uses 6.5 GB when SRI takes 11 GB. These are compared to the default SRI build (i.e. without their smaller structures). I'm working on optimizing this even further.
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Binary format via mmap is supported. Run ./build_binary to make one then pass the binary file name instead.
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Currently, it assumes POSIX APIs for errno, sterror_r, open, close, mmap, munmap, ftruncate, fstat, and read. This is tested on Linux and the non-UNIX Mac OS X. I welcome submissions porting (via #ifdef) to other systems (e.g. Windows) but proudly have no machine on which to test it.
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A brief note to Mac OS X users: your gcc is too old to recognize the pack pragma. The warning effectively means that, on 64-bit machines, the model will use 16 bytes instead of 12 bytes per n-gram of maximum order (those of lower order are already 16 bytes) in the probing and sorted models. The trie is not impacted by this.
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It does not depend on Boost or ICU. However, if you use Boost and/or ICU in the rest of your code, you should define HAVE_BOOST and/or HAVE_ICU in util/string_piece.hh. Defining HAVE_BOOST will let you hash StringPiece. Defining HAVE_ICU will use ICU's StringPiece to prevent a conflict with the one provided here. By the way, ICU's StringPiece is buggy and I reported this bug: http://bugs.icu-project.org/trac/ticket/7924 .
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It does not depend on Boost or ICU. However, if you use Boost and/or ICU in the rest of your code, you should define HAVE_BOOST and/or HAVE_ICU in util/have.hh. Defining HAVE_BOOST will let you hash StringPiece. Defining HAVE_ICU will use ICU's StringPiece to prevent a conflict with the one provided here.
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The recommend way to use this:
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Copy the code and distribute with your decoder.
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Set HAVE_ICU and HAVE_BOOST at the top of util/string_piece.hh as instructed above.
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Set HAVE_ICU and HAVE_BOOST at the top of util/have.hh as instructed above.
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Look at compile.sh and reimplement using your build system.
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Use either the interface in lm/ngram.hh or lm/virtual_interface.hh
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Interface documentation is in comments of lm/virtual_interface.hh (including for lm/ngram.hh).
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Use either the interface in lm/model.hh or lm/virtual_interface.hh
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Interface documentation is in comments of lm/virtual_interface.hh (including for lm/model.hh).
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I recommend copying the code and distributing it with your decoder. However, please send improvements to me so that they can be integrated into the package.
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@ -11,6 +11,7 @@
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#include "lm/word_index.hh"
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#include "util/ersatz_progress.hh"
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#include "util/file_piece.hh"
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#include "util/have.hh"
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#include "util/proxy_iterator.hh"
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#include "util/scoped.hh"
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@ -20,7 +21,6 @@
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#include <cstdio>
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#include <deque>
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#include <limits>
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//#include <parallel/algorithm>
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#include <vector>
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#include <sys/mman.h>
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@ -170,7 +170,7 @@ template <class Proxy> class CompareRecords : public std::binary_function<const
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return Compare(reinterpret_cast<const WordIndex*>(first.data()), second.Indices());
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}
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bool operator()(const std::string &first, const std::string &second) const {
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return Compare(reinterpret_cast<const WordIndex*>(first.data()), reinterpret_cast<const WordIndex*>(first.data()));
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return Compare(reinterpret_cast<const WordIndex*>(first.data()), reinterpret_cast<const WordIndex*>(second.data()));
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}
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private:
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@ -384,7 +384,6 @@ void WriteContextFile(uint8_t *begin, uint8_t *end, const std::string &ngram_fil
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PartialIter context_begin(PartialViewProxy(begin + sizeof(WordIndex), entry_size, context_size));
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PartialIter context_end(PartialViewProxy(end + sizeof(WordIndex), entry_size, context_size));
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// TODO: __gnu_parallel::sort here.
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std::sort(context_begin, context_end, CompareRecords<PartialViewProxy>(order - 1));
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std::string name(ngram_file_name + kContextSuffix);
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@ -502,7 +501,7 @@ void ConvertToSorted(util::FilePiece &f, const SortedVocabulary &vocab, const st
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}
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// Sort full records by full n-gram.
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EntryProxy proxy_begin(begin, entry_size), proxy_end(out_end, entry_size);
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// TODO: __gnu_parallel::sort here.
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// Tried __gnu_parallel::sort here but it took too much memory.
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std::sort(NGramIter(proxy_begin), NGramIter(proxy_end), CompareRecords<EntryProxy>(order));
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files.push_back(DiskFlush(begin, out_end, file_prefix, batch, order, weights_size));
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WriteContextFile(begin, out_end, files.back(), entry_size, order);
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@ -533,7 +532,7 @@ void ConvertToSorted(util::FilePiece &f, const SortedVocabulary &vocab, const st
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}
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}
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void ARPAToSortedFiles(util::FilePiece &f, const std::vector<uint64_t> &counts, std::size_t buffer, const std::string &file_prefix, SortedVocabulary &vocab) {
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void ARPAToSortedFiles(util::FilePiece &f, const std::vector<uint64_t> &counts, size_t buffer, const std::string &file_prefix, SortedVocabulary &vocab) {
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{
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std::string unigram_name = file_prefix + "unigrams";
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util::scoped_fd unigram_file;
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@ -544,10 +543,10 @@ void ARPAToSortedFiles(util::FilePiece &f, const std::vector<uint64_t> &counts,
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// Only use as much buffer as we need.
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size_t buffer_use = 0;
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for (unsigned int order = 2; order < counts.size(); ++order) {
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buffer_use = std::max(buffer_use, (size_t)((sizeof(WordIndex) * order + 2 * sizeof(float)) * counts[order - 1]));
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buffer_use = std::max<size_t>(buffer_use, static_cast<size_t>((sizeof(WordIndex) * order + 2 * sizeof(float)) * counts[order - 1]));
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}
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buffer_use = std::max(buffer_use, (size_t)((sizeof(WordIndex) * counts.size() + sizeof(float)) * counts.back()));
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buffer = std::min((size_t)buffer, buffer_use);
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buffer_use = std::max<size_t>(buffer_use, static_cast<size_t>((sizeof(WordIndex) * counts.size() + sizeof(float)) * counts.back()));
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buffer = std::min<size_t>(buffer, buffer_use);
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util::scoped_memory mem;
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mem.reset(malloc(buffer), buffer, util::scoped_memory::MALLOC_ALLOCATED);
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@ -16,7 +16,7 @@ const char *HandleStrerror(int ret, const char *buf) {
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}
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// The GNU version.
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const char *HandleStrerror(const char *ret, const char *buf) {
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const char *HandleStrerror(const char *ret, const char * /*buf*/) {
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return ret;
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}
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} // namespace
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@ -3,6 +3,7 @@
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#include "util/ersatz_progress.hh"
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#include "util/exception.hh"
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#include "util/have.hh"
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#include "util/mmap.hh"
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#include "util/scoped.hh"
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#include "util/string_piece.hh"
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@ -11,8 +12,6 @@
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#include <cstddef>
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#define HAVE_ZLIB
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namespace util {
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class EndOfFileException : public Exception {
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11
kenlm/util/have.hh
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11
kenlm/util/have.hh
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/* This ties kenlm's config into Moses's build system. If you are using kenlm
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* outside Moses, see http://kheafield.com/code/kenlm/developers/ .
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*/
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#ifndef UTIL_HAVE__
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#define UTIL_HAVE__
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#include "../config.h"
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#define HAVE_ZLIB
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#endif // UTIL_HAVE__
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#ifndef BASE_STRING_PIECE_H__
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#define BASE_STRING_PIECE_H__
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//Uncomment this line if you use ICU in your code.
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//#define HAVE_ICU
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//Uncomment this line if you want boost hashing for your StringPieces.
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//#define HAVE_BOOST
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#include "util/have.hh"
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#ifdef HAVE_BOOST
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#include <boost/functional/hash/hash.hpp>
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