1NGRAMSHRINK(1)                   User Commands                  NGRAMSHRINK(1)
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NAME

6       ngramshrink - manual page for ngramshrink 1.3.4
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DESCRIPTION

9       Shrink ngram model from input model file.
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11              Usage: ngramshrink [--options] [in.fst [out.fst]]
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13       PROGRAM FLAGS:
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15       --backoff_label: type = int64, default = 0
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17              Backoff  label --check_consistency: type = bool, default = false
18              Check model consistency --context_pattern: type  =  string,  de‐
19              fault  = "" Pattern of contexts to prune --count_pattern: type =
20              string, default = "" Pattern of counts to prune --method: type =
21              string,   default   =   "seymore"   One   of:   "context_prune",
22              "count_prune", "relative_entropy", "seymore" --norm_eps: type  =
23              double,    default   =   0.001   Normalization   check   epsilon
24              --shrink_opt: type = int32,  default  =  0  Optimization  level:
25              Range   0   (fastest)   to   2   (most  accurate)  --target_num‐
26              ber_of_ngrams: type = int64, default  =  -1  Maximum  number  of
27              ngrams  to  leave  in  model after pruning. Value less than zero
28              means no target number, just use theta.  --theta: type = double,
29              default  = 0 Pruning threshold theta --total_unigram_count: type
30              = double, default = -1 Total unigram count
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32       LIBRARY FLAGS:
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34       Flags from: flags.cc
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36       --help: type = bool, default = false
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38              show usage information --helpshort: type = bool, default = false
39              show  brief usage information --tmpdir: type = string, default =
40              "/tmp" temporary directory --v: type = int32, default =  0  ver‐
41              bosity level
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43       Flags from: fst.cc
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45       --fst_align: type = bool, default = false
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47              Write FST data aligned where appropriate --fst_default_cache_gc:
48              type = bool, default = true Enable garbage collection  of  cache
49              --fst_default_cache_gc_limit:  type  =  int64, default = 1048576
50              Cache   byte   size    that    triggers    garbage    collection
51              --fst_read_mode:  type  =  string, default = "read" Default file
52              reading mode for mappable files --fst_verify_properties: type  =
53              bool, default = false Verify FST properties queried by TestProp‐
54              erties --save_relabel_ipairs: type = string, default =  ""  Save
55              input  relabel  pairs  to  file  --save_relabel_opairs:  type  =
56              string, default = "" Save output relabel pairs to file
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58       Flags from: ngram-output.cc
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60       --end_symbol: type = string, default = "</s>"
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62              Class label for sentence end --start_symbol: type = string,  de‐
63              fault = "<s>" Class label for sentence start
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65       Flags from: symbol-table.cc
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67       --fst_compat_symbols: type = bool, default = true
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69              Require symbol tables to match when appropriate --fst_field_sep‐
70              arator: type = string, default = "      " Set of characters used
71              as a separator between printed fields
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73       Flags from: util.cc
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75       --fst_error_fatal: type = bool, default = true
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77              FST  errors are fatal; o.w. return objects flagged as bad: e.g.,
78              FSTs:  kError  property  set,  FST  weights:  not   a   Member()
79              --ngram_error_fatal:  type  =  bool, default = true NGram errors
80              are fatal if true; otherwise returns  objects  flagged  as  bad:
81              e.g., NGramModel::Error() is true
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83       Flags from: weight.cc
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85       --fst_weight_parentheses: type = string, default = ""
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87              Characters  enclosing  the  first  weight of a printed composite
88              weight (e.g., pair weight, tuple weight and derived classes)  to
89              ensure  proper I/O of nested composite weights; must have size 0
90              (none) or 2 (open and close parenthesis) --fst_weight_separator:
91              type = string, default = "," Character separator between printed
92              composite weights; must be a single character
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96ngramshrink 1.3.4                January 2018                   NGRAMSHRINK(1)