fstloglinearapply(1)

💖 fstloglinearapply — NAME 💖

okay bestie, gather round, because this is fstloglinearapply(1), a User Command, and it does exactly one glowy little thing: it applies an FST to a log-linear model. that's the whole vibe. and yes, the man page name is right there up top, no need to scroll, i got you 🫶

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✨ SYNOPSIS ✨

fstloglinearapply [OPTIONS] in.fst linear.fst [out.fst]

three positional besties and one optional one, no cap. in.fst first, then linear.fst, and out.fst if you want it written somewhere 💅

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🌸 DESCRIPTION 🌸

so here's the tea: you take an FST, and you apply it to another FST while treating that second one as a log-linear model. that's literally it. that's the whole job. it's giving "two fsts walk into a bar" 🍓

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👑 OPTIONS 👑

quick heads up before we dive in, because this applies to all the boolean ones: they accept either true or false as a value, or the implicit value true if you don't specify a value at all. so --help and --help=true are the same energy, periodt ✨

• --classifier[=BOOLEAN] — treat the input model as a classifier instead of a tagger. Default: false.
• --delimiter=CHARACTER — a single non-whitespace character that lives as the delimiter inside sequences of feature symbols and output symbols. Default: |.
• --empty_symbol=STRING — set the special symbol that means "this sequence is empty, bestie." Default: "<empty>".
• --end_symbol=STRING — set the end of sentence symbol. Default: "</s>".
• --fst_align[=BOOLEAN] — write FST data aligned where appropriate. Default: false.
• --fst_compat_symbols[=BOOLEAN] — require symbol tables to match when appropriate. Default: true.
• --fst_default_cache_gc[=BOOLEAN] — enable garbage collection of the cache. Default: true.
• --fst_default_cache_gc_limit=N — set the cache byte size that triggers garbage collection. Default: 1048576.
• --fst_error_fatal[=BOOLEAN] — if true, FST errors are fatal. otherwise the returned objects get flagged as bad: for example, FSTs come back with the kError property set to true, and FST weights are set so that Member() returns false. Default: true.
• --fst_field_separator=STRING — set the characters used as a separator between printed fields. Default: " ".
• --fst_read_mode=STRING — set the default file reading mode for mappable files, either "read" or "map". Default: "read".
• --fst_verify_properties[=BOOLEAN] — verify fst properties queried by TestProperties. Default: false.
• --fst_weight_parentheses=STRING — set the characters enclosing the first weight of a printed composite weight (like pair weight, tuple weight, and derived classes) so nested composite weights get proper I/O. must have size 0 (none) or 2 (open and close parenthesis). Default: no parentheses.
• --fst_weight_separator=CHARACTER — set the character separator between printed composite weights. Default: comma.
• --help[=BOOLEAN] — show usage information. Default: false.
• --helpshort[=BOOLEAN] — show brief usage information. Default: false.
• --normalize[=BOOLEAN] — normalize to get posterior. Default: true.
• --save_relabel_ipairs=FILENAME — save input relabel pairs to file. Default: do not save.
• --save_relabel_opairs=FILENAME — save output relabel pairs to file. Default: do not save.
• --start_symbol=STRING — set the end of sentence symbol. Default: "<s>".
• --tmpdir=PATHNAME — set the temporary directory to use. Default: /tmp.
• --v[=N] — set the verbosity level. Default: 0.

okay so about --start_symbol… the page says it sets the end of sentence symbol, and its default is "<s>". i am simply relaying what the page says, bestie, i do not make the rules 💀 no cap, that's verbatim.

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🦋 SEE ALSO 🦋

the whole friend group, in order, go follow them all:

fstarcsort(1), fstclosure(1), fstcompile(1), fstcompose(1), fstcompress(1), fstconcat(1), fstconnect(1), fstconvert(1), fstdeterminize(1), fstdifference(1), fstdisambiguate(1), fstdraw(1), fstencode(1), fstepsnormalize(1), fstequal(1), fstequivalent(1), fstinfo(1), fstintersect(1), fstinvert(1), fstisomorphic(1), fstlinear(1), fstmap(1), fstminimize(1), fstprint(1), fstproject(1), fstprune(1), fstpush(1), fstrandgen(1), fstrelabel(1), fstreplace(1), fstreverse(1), fstreweight(1), fstrmepsilon(1), fstshortestdistance(1), fstshortestpath(1), fstsymbols(1), fstsynchronize(1), fsttopsort(1), fstunion(1)

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🎀 the sign-off 🎀

that's the page, bestie, you ate it up, no crumbs left 🌈 this little icon is from OpenFst 1.8.5, dated Mar 2026, and it's filed under fstloglinearapply(1) in User Commands. go forth and apply those FSTs 💖✨👑