Big kenlm change includes lower order models for probing only. And other stuff.

1 files changed, 20 insertions, 41 deletions

diff --git a/klm/lm/trie.cc b/klm/lm/trie.cc
index 20075bb8..0f1ca574 100644
--- a/klm/lm/trie.cc
+++ b/klm/lm/trie.cc
@@ -1,7 +1,6 @@
 #include "lm/trie.hh"
 
 #include "lm/bhiksha.hh"
-#include "lm/quantize.hh"
 #include "util/bit_packing.hh"
 #include "util/exception.hh"
 #include "util/sorted_uniform.hh"
@@ -58,91 +57,71 @@ void BitPacked::BaseInit(void *base, uint64_t max_vocab, uint8_t remaining_bits)
   max_vocab_ = max_vocab;
 }
 
-template <class Quant, class Bhiksha> std::size_t BitPackedMiddle<Quant, Bhiksha>::Size(uint8_t quant_bits, uint64_t entries, uint64_t max_vocab, uint64_t max_ptr, const Config &config) {
+template <class Bhiksha> std::size_t BitPackedMiddle<Bhiksha>::Size(uint8_t quant_bits, uint64_t entries, uint64_t max_vocab, uint64_t max_ptr, const Config &config) {
   return Bhiksha::Size(entries + 1, max_ptr, config) + BaseSize(entries, max_vocab, quant_bits + Bhiksha::InlineBits(entries + 1, max_ptr, config));
 }
 
-template <class Quant, class Bhiksha> BitPackedMiddle<Quant, Bhiksha>::BitPackedMiddle(void *base, const Quant &quant, uint64_t entries, uint64_t max_vocab, uint64_t max_next, const BitPacked &next_source, const Config &config) :
+template <class Bhiksha> BitPackedMiddle<Bhiksha>::BitPackedMiddle(void *base, uint8_t quant_bits, uint64_t entries, uint64_t max_vocab, uint64_t max_next, const BitPacked &next_source, const Config &config) :
   BitPacked(),
-  quant_(quant),
+  quant_bits_(quant_bits),
   // If the offset of the method changes, also change TrieSearch::UpdateConfigFromBinary.
   bhiksha_(base, entries + 1, max_next, config),
   next_source_(&next_source) {
   if (entries + 1 >= (1ULL << 57) || (max_next >= (1ULL << 57)))  UTIL_THROW(util::Exception, "Sorry, this does not support more than " << (1ULL << 57) << " n-grams of a particular order.  Edit util/bit_packing.hh and fix the bit packing functions.");
-  BaseInit(reinterpret_cast<uint8_t*>(base) + Bhiksha::Size(entries + 1, max_next, config), max_vocab, quant.TotalBits() + bhiksha_.InlineBits());
+  BaseInit(reinterpret_cast<uint8_t*>(base) + Bhiksha::Size(entries + 1, max_next, config), max_vocab, quant_bits_ + bhiksha_.InlineBits());
 }
 
-template <class Quant, class Bhiksha> void BitPackedMiddle<Quant, Bhiksha>::Insert(WordIndex word, float prob, float backoff) {
+template <class Bhiksha> util::BitAddress BitPackedMiddle<Bhiksha>::Insert(WordIndex word) {
   assert(word <= word_mask_);
   uint64_t at_pointer = insert_index_ * total_bits_;
 
   util::WriteInt57(base_, at_pointer, word_bits_, word);
   at_pointer += word_bits_;
-  quant_.Write(base_, at_pointer, prob, backoff);
-  at_pointer += quant_.TotalBits();
+  util::BitAddress ret(base_, at_pointer);
+  at_pointer += quant_bits_;
   uint64_t next = next_source_->InsertIndex();
   bhiksha_.WriteNext(base_, at_pointer, insert_index_, next);
-
   ++insert_index_;
+  return ret;
 }
 
-template <class Quant, class Bhiksha> bool BitPackedMiddle<Quant, Bhiksha>::Find(WordIndex word, float &prob, float &backoff, NodeRange &range, uint64_t &pointer) const {
+template <class Bhiksha> util::BitAddress BitPackedMiddle<Bhiksha>::Find(WordIndex word, NodeRange &range, uint64_t &pointer) const {
   uint64_t at_pointer;
   if (!FindBitPacked(base_, word_mask_, word_bits_, total_bits_, range.begin, range.end, max_vocab_, word, at_pointer)) {
-    return false;
+    return util::BitAddress(NULL, 0);
   }
   pointer = at_pointer;
   at_pointer *= total_bits_;
   at_pointer += word_bits_;
+  bhiksha_.ReadNext(base_, at_pointer + quant_bits_, pointer, total_bits_, range);
 
-  quant_.Read(base_, at_pointer, prob, backoff);
-  at_pointer += quant_.TotalBits();
-
-  bhiksha_.ReadNext(base_, at_pointer, pointer, total_bits_, range);
-
-  return true;
+  return util::BitAddress(base_, at_pointer);
 }
 
-template <class Quant, class Bhiksha> bool BitPackedMiddle<Quant, Bhiksha>::FindNoProb(WordIndex word, float &backoff, NodeRange &range) const {
-  uint64_t index;
-  if (!FindBitPacked(base_, word_mask_, word_bits_, total_bits_, range.begin, range.end, max_vocab_, word, index)) return false;
-  uint64_t at_pointer = index * total_bits_;
-  at_pointer += word_bits_;
-  quant_.ReadBackoff(base_, at_pointer, backoff);
-  at_pointer += quant_.TotalBits();
-  bhiksha_.ReadNext(base_, at_pointer, index, total_bits_, range);
-  return true;
-}
-
-template <class Quant, class Bhiksha> void BitPackedMiddle<Quant, Bhiksha>::FinishedLoading(uint64_t next_end, const Config &config) {
+template <class Bhiksha> void BitPackedMiddle<Bhiksha>::FinishedLoading(uint64_t next_end, const Config &config) {
   uint64_t last_next_write = (insert_index_ + 1) * total_bits_ - bhiksha_.InlineBits();
   bhiksha_.WriteNext(base_, last_next_write, insert_index_ + 1, next_end);
   bhiksha_.FinishedLoading(config);
 }
 
-template <class Quant> void BitPackedLongest<Quant>::Insert(WordIndex index, float prob) {
+util::BitAddress BitPackedLongest::Insert(WordIndex index) {
   assert(index <= word_mask_);
   uint64_t at_pointer = insert_index_ * total_bits_;
   util::WriteInt57(base_, at_pointer, word_bits_, index);
   at_pointer += word_bits_;
-  quant_.Write(base_, at_pointer, prob);
   ++insert_index_;
+  return util::BitAddress(base_, at_pointer);
 }
 
-template <class Quant> bool BitPackedLongest<Quant>::Find(WordIndex word, float &prob, const NodeRange &range) const {
+util::BitAddress BitPackedLongest::Find(WordIndex word, const NodeRange &range) const {
   uint64_t at_pointer;
-  if (!FindBitPacked(base_, word_mask_, word_bits_, total_bits_, range.begin, range.end, max_vocab_, word, at_pointer)) return false;
+  if (!FindBitPacked(base_, word_mask_, word_bits_, total_bits_, range.begin, range.end, max_vocab_, word, at_pointer)) return util::BitAddress(NULL, 0);
   at_pointer = at_pointer * total_bits_ + word_bits_;
-  quant_.Read(base_, at_pointer, prob);
-  return true;
+  return util::BitAddress(base_, at_pointer);
 }
 
-template class BitPackedMiddle<DontQuantize::Middle, DontBhiksha>;
-template class BitPackedMiddle<DontQuantize::Middle, ArrayBhiksha>;
-template class BitPackedMiddle<SeparatelyQuantize::Middle, DontBhiksha>;
-template class BitPackedMiddle<SeparatelyQuantize::Middle, ArrayBhiksha>;
-template class BitPackedLongest<DontQuantize::Longest>;
-template class BitPackedLongest<SeparatelyQuantize::Longest>;
+template class BitPackedMiddle<DontBhiksha>;
+template class BitPackedMiddle<ArrayBhiksha>;
 
 } // namespace trie
 } // namespace ngram