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randomize: new function

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* src/tgbaalgos/randomize.cc, src/tgbaalgos/randomize.hh: New files.
* src/tgbaalgos/Makefile.am: Add them.
* src/graph/graph.hh (rename_states_): New method.
* src/bin/autfilt.cc: Add options --randomize and --seed.
* src/tgbatest/randomize.test: Test them.
* src/tgbatest/Makefile.am: Add randomize.test.
* NEWS: Mention randomize().
This commit is contained in:
Alexandre Duret-Lutz 2014-12-03 14:16:45 +01:00
parent 0db0eca14e
commit c0e9891246
8 changed files with 257 additions and 7 deletions
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2
src/tgbaalgos/Makefile.am
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@ -57,6 +57,7 @@ tgbaalgos_HEADERS = \
product.hh \
projrun.hh \
randomgraph.hh \
randomize.hh \
reachiter.hh \
reducerun.hh \
replayrun.hh \
@ -108,6 +109,7 @@ libtgbaalgos_la_SOURCES = \
product.cc \
projrun.cc \
randomgraph.cc \
randomize.cc \
reachiter.cc \
reducerun.cc \
replayrun.cc \

55
src/tgbaalgos/randomize.cc Normal file
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@ -0,0 +1,55 @@
// -*- coding: utf-8 -*-
// Copyright (C) 2014 Laboratoire de Recherche et Développement de
// l'Epita (LRDE).
//
// This file is part of Spot, a model checking library.
//
// Spot is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
//
// Spot is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
// License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include <algorithm>
#include <numeric>
#include "randomize.hh"
#include "misc/random.hh"
namespace spot
{
SPOT_API void
randomize(tgba_digraph_ptr& aut, bool randomize_states,
bool randomize_transitions)
{
if (!randomize_states && !randomize_transitions)
return;
auto& g = aut->get_graph();
if (randomize_states)
{
unsigned n = g.num_states();
std::vector<unsigned> nums(n);
std::iota(nums.begin(), nums.end(), 0);
std::random_shuffle(nums.begin(), nums.end(), spot::mrand);
g.rename_states_(nums);
aut->set_init_state(nums[aut->get_init_state_number()]);
}
if (randomize_transitions)
{
auto begin = g.transitions().begin() + 1;
auto end = g.transitions().end();
std::random_shuffle(begin, end, spot::mrand);
}
typedef tgba_digraph::graph_t::trans_storage_t tr_t;
g.sort_transitions_([](const tr_t& lhs, const tr_t& rhs)
{ return lhs.src < rhs.src; });
g.chain_transitions_();
}
}

37
src/tgbaalgos/randomize.hh Normal file
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@ -0,0 +1,37 @@
// -*- coding: utf-8 -*-
// Copyright (C) 2014 Laboratoire de Recherche et
// Développement de l'Epita (LRDE).
//
// This file is part of Spot, a model checking library.
//
// Spot is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
//
// Spot is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
// License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#ifndef SPOT_TGBAALGOS_RANDOMIZE_HH
# define SPOT_TGBAALGOS_RANDOMIZE_HH
#include "tgba/tgbagraph.hh"
namespace spot
{
/// \brief Randomize a TGBA
///
/// Make a random permutation of the state, and of the transitions
/// leaving this state.
SPOT_API void
randomize(tgba_digraph_ptr& aut,
bool randomize_states = true,
bool randomize_transitions = true);
}
#endif // SPOT_TGBAALGOS_RANDOMGRAPH_HH