CollocatorDB: Storing and retrieving collocation counts based on RocksDB

Installation

Install RocksDB and prerequisites

• prerequisites on CentOS, FeDora, RHEL

  sudo yum install cmake3 snappy snappy-devel zlib zlib-devel bzip2 bzip2-devel lz4-devel libzstd-devel libomp-devel
  
  git clone https://github.com/gflags/gflags.git
  cd gflags
  git checkout v2.0
  ./configure && make && sudo make install
  cd ..
  

• prerequisites on Ubuntu, Debian

  sudo apt-get install cmake libgflags-dev libsnappy-dev zlib1g-dev libbz2-dev liblz4-dev libzstd-dev libomp-dev
  

• install RocksDB v5.11.3

  curl -L https://github.com/facebook/rocksdb/archive/refs/tags/v5.11.3.tar.gz | tar zx
  cd rocksdb-5.11.3
  make static_lib DISABLE_WARNING_AS_ERROR=1 && sudo make install-static DISABLE_WARNING_AS_ERROR=1
  make shared_lib DISABLE_WARNING_AS_ERROR=1 && sudo make install-shared DISABLE_WARNING_AS_ERROR=1
  ldconfig
  

Install CollocatorDB

git clone "https://korap.ids-mannheim.de/gerrit/private/collocatordb"
cd collocatordb
mkdir -p build
cd build
cmake -DCMAKE_INSTALL_PREFIX=/usr/local ..
make && ctest --extra-verbose && sudo make install

Provided API

typedef struct {
  uint32_t w2;
  uint64_t f2;
  uint64_t raw;
  double pmi;
  double npmi;
  double llr;
  double lfmd;
  double md;
  uint64_t left_raw;
  uint64_t right_raw;
  double left_pmi;
  double right_pmi;
  double dice;
  double logdice;
  double ldaf;
  int window;
  int af_window;
} COLLOCATOR ;

COLLOCATORDB *open_collocatordb(const char *s);
COLLOCATORDB *open_collocatordb_for_write(const char *s);
void inc_collocator(COLLOCATORDB *db, uint64_t w1, uint64_t w2, int8_t dist);
void dump_collocators(COLLOCATORDB *db, uint32_t w1, uint32_t w2, int8_t dist);
COLLOCATOR *get_collocators(COLLOCATORDB *db, uint32_t w1);
COLLOCATOR *get_collocation_scores(COLLOCATORDB *db, uint32_t w1, uint32_t w2);
char *get_collocators_as_json(COLLOCATORDB *db, uint32_t w1);
char *get_collocation_scores_as_json(COLLOCATORDB *db, uint32_t w1, uint32_t w2);
char *get_word(COLLOCATORDB *db, uint32_t w1);
void read_vocab(COLLOCATORDB *db, char *fname);

TODO

• extend API
• add more unit tests

License

Based on RocksDB, CollocatorDB is dual-licensed under both the GPLv2 (found in the COPYING file in the root directory) and Apache 2.0 License (found in the LICENSE.Apache file in the root directory). You may select, at your option, one of the above-listed licenses.