/usr/include/fst/script/randgen.h is in libfst-dev 1.5.3+r3-2.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 | // See www.openfst.org for extensive documentation on this weighted
// finite-state transducer library.
#ifndef FST_SCRIPT_RANDGEN_H_
#define FST_SCRIPT_RANDGEN_H_
#include <fst/randgen.h>
#include <fst/script/arg-packs.h>
#include <fst/script/fst-class.h>
namespace fst {
namespace script {
enum RandArcSelection {
UNIFORM_ARC_SELECTOR,
LOG_PROB_ARC_SELECTOR,
FAST_LOG_PROB_ARC_SELECTOR
};
typedef args::Package<const FstClass &, MutableFstClass *, time_t,
const RandGenOptions<RandArcSelection> &> RandGenArgs;
template <class Arc>
void RandGen(RandGenArgs *args) {
const Fst<Arc> &ifst = *(args->arg1.GetFst<Arc>());
MutableFst<Arc> *ofst = args->arg2->GetMutableFst<Arc>();
time_t seed = args->arg3;
const RandGenOptions<RandArcSelection> &opts = args->arg4;
if (opts.arc_selector == UNIFORM_ARC_SELECTOR) {
UniformArcSelector<Arc> arc_selector(seed);
RandGenOptions<UniformArcSelector<Arc>> ropts(arc_selector, opts.max_length,
opts.npath, opts.weighted,
opts.remove_total_weight);
RandGen(ifst, ofst, ropts);
} else if (opts.arc_selector == FAST_LOG_PROB_ARC_SELECTOR) {
FastLogProbArcSelector<Arc> arc_selector(seed);
RandGenOptions<FastLogProbArcSelector<Arc>> ropts(
arc_selector, opts.max_length, opts.npath, opts.weighted,
opts.remove_total_weight);
RandGen(ifst, ofst, ropts);
} else {
LogProbArcSelector<Arc> arc_selector(seed);
RandGenOptions<LogProbArcSelector<Arc>> ropts(arc_selector, opts.max_length,
opts.npath, opts.weighted,
opts.remove_total_weight);
RandGen(ifst, ofst, ropts);
}
}
// Client-facing prototype
void RandGen(const FstClass &ifst, MutableFstClass *ofst,
time_t seed = time(nullptr),
const RandGenOptions<RandArcSelection> &opts =
fst::RandGenOptions<fst::script::RandArcSelection>(
fst::script::UNIFORM_ARC_SELECTOR));
} // namespace script
} // namespace fst
#endif // FST_SCRIPT_RANDGEN_H_
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