NAME

       ngramshrink - Shrink ngram model from input model file.

DESCRIPTION

       Shrink ngram model from input model file.

SYNOPSIS

       ngramshrink [--options] [in.fst [out.fst]]

OPTIONS

       --backoff_label: type = int64, default = 0

              Backoff label

       --check_consistency: type = bool, default = false

              Check model consistency

       --context_pattern: type = string, default = ""

              Pattern of contexts to prune

       --count_pattern: type = string, default = ""

              Pattern of counts to prune

       --method: type = string, default = "seymore"

              One of: "context_prune", "count_prune", "relative_entropy", "seymore"

       --norm_eps: type = double, default = 0.001

              Normalization check epsilon

       --shrink_opt: type = int32, default = 0

              Optimization level: Range 0 (fastest) to 2 (most accurate)

       --target_number_of_ngrams: type = int64, default = -1

              Maximum  number  of  ngrams  to leave in model after pruning. Value less than zero means no target
              number, just use theta.

       --theta: type = double, default = 0

              Pruning threshold theta

       --total_unigram_count: type = double, default = -1

              Total unigram count

       --help: type = bool, default = false

              show usage information

       --helpshort: type = bool, default = false

              show brief usage information

       --tmpdir: type = string, default = "/tmp"

              temporary directory

       --v: type = int32, default = 0

              verbosity level

       --fst_align: type = bool, default = false

              Write FST data aligned where appropriate

       --fst_default_cache_gc: type = bool, default = true

              Enable garbage collection of cache

       --fst_default_cache_gc_limit: type = int64, default = 1048576

              Cache byte size that triggers garbage collection

       --fst_read_mode: type = string, default = "read"

              Default file reading mode for mappable files

       --fst_verify_properties: type = bool, default = false

              Verify FST properties queried by TestProperties

       --save_relabel_ipairs: type = string, default = ""

              Save input relabel pairs to file

       --save_relabel_opairs: type = string, default = ""

              Save output relabel pairs to file

       --end_symbol: type = string, default = "</s>"

              Class label for sentence start

       --start_symbol: type = string, default = "<s>"

              Class label for sentence start

       --fst_compat_symbols: type = bool, default = true

              Require symbol tables to match when appropriate

       --fst_field_separator: type = string, default = "      "

              Set of characters used as a separator between printed fields

       --fst_error_fatal: type = bool, default = true

              FST errors are fatal; o.w. return objects flagged as bad: e.g., FSTs:  kError  property  set,  FST
              weights: not a Member()

       --ngram_error_fatal: type = bool, default = true

              NGram  errors  are  fatal;  o.w. return objects flagged as bad:  e.g., NGramModel::Error() returns
              true.

       --fst_weight_parentheses: type = string, default = ""

              Characters enclosing the first weight of a printed composite  weight  (e.g.,  pair  weight,  tuple
              weight  and  derived  classes)  to ensure proper I/O of nested composite weights; must have size 0
              (none) or 2 (open and close parenthesis)

       --fst_weight_separator: type = string, default = ","

              Character separator between printed composite weights; must be a single character