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#ifndef _APPLY_FSA_MODELS_H_
#define _APPLY_FSA_MODELS_H_
#include <string>
#include <iostream>
#include "feature_vector.h"
#include "cfg.h"
struct FsaFeatureFunction;
struct Hypergraph;
struct SentenceMetadata;
struct ApplyFsaBy {
enum {
BU_CUBE,
BU_FULL,
EARLEY,
N_ALGORITHMS
};
int pop_limit; // only applies to BU_FULL so far
bool IsBottomUp() const {
return algorithm==BU_FULL || algorithm==BU_CUBE;
}
int BottomUpAlgorithm() const;
int algorithm;
std::string name() const;
friend inline std::ostream &operator << (std::ostream &o,ApplyFsaBy const& c) {
o << c.name();
if (c.algorithm==BU_CUBE)
o << "("<<c.pop_limit<<")";
return o;
}
explicit ApplyFsaBy(int alg, int poplimit=200);
ApplyFsaBy(std::string const& name, int poplimit=200);
ApplyFsaBy(const ApplyFsaBy &o) : algorithm(o.algorithm) { }
static std::string all_names(); // space separated
};
// in case you might want the CFG whether or not you apply FSA models:
struct HgCFG {
HgCFG(Hypergraph const& ih) : ih(ih) { have_cfg=false; }
Hypergraph const& ih;
CFG cfg;
bool have_cfg;
void InitCFG(CFG &to) {
to.Init(ih,true,false,true);
}
CFG &GetCFG()
{
if (!have_cfg) {
have_cfg=true;
InitCFG(cfg);
}
return cfg;
}
void GiveCFG(CFG &to) {
if (!have_cfg)
InitCFG(to);
else {
have_cfg=false;
to.Clear();
to.Swap(cfg);
}
}
CFG const& GetCFG() const {
assert(have_cfg);
return cfg;
}
};
void ApplyFsaModels(HgCFG &hg_or_cfg_in,
const SentenceMetadata& smeta,
const FsaFeatureFunction& fsa,
DenseWeightVector const& weights, // pre: in is weighted by these (except with fsa featval=0 before this)
ApplyFsaBy const& cfg,
Hypergraph* out);
inline void ApplyFsaModels(Hypergraph const& ih,
const SentenceMetadata& smeta,
const FsaFeatureFunction& fsa,
DenseWeightVector const& weights, // pre: in is weighted by these (except with fsa featval=0 before this)
ApplyFsaBy const& cfg,
Hypergraph* out) {
HgCFG i(ih);
ApplyFsaModels(i,smeta,fsa,weights,cfg,out);
}
#endif
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