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flow_cutter_config.h
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#ifndef FLOW_CUTTER_CONFIG_H
#define FLOW_CUTTER_CONFIG_H
#include <string>
#include <stdexcept>
#include <iomanip>
#include <sstream>
namespace flow_cutter{
struct Config{
int cutter_count;
int random_seed;
int source;
int target;
int thread_count;
int max_cut_size;
float max_imbalance;
int branch_factor;
enum class SeparatorSelection{
node_min_expansion,
edge_min_expansion,
node_first,
edge_first
};
SeparatorSelection separator_selection;
enum class AvoidAugmentingPath{
avoid_and_pick_best,
do_not_avoid,
avoid_and_pick_oldest,
avoid_and_pick_random
};
AvoidAugmentingPath avoid_augmenting_path;
enum class SkipNonMaximumSides{
skip,
no_skip
};
SkipNonMaximumSides skip_non_maximum_sides;
enum class GraphSearchAlgorithm{
pseudo_depth_first_search,
breadth_first_search,
depth_first_search
};
GraphSearchAlgorithm graph_search_algorithm;
enum class DumpState{
no,
yes
};
DumpState dump_state;
enum class ReportCuts{
yes,
no
};
ReportCuts report_cuts;
enum class PierceRating{
max_target_minus_source_hop_dist,
min_source_hop_dist,
max_target_hop_dist,
max_target_minus_source_weight_dist,
min_source_weight_dist,
max_target_weight_dist,
random,
oldest,
max_arc_weight,
min_arc_weight,
circular_hop,
circular_weight
};
PierceRating pierce_rating;
Config():
cutter_count(3),
random_seed(5489),
source(-1),
target(-1),
thread_count(1),
max_cut_size(1000),
max_imbalance(0.2),
branch_factor(5),
separator_selection(SeparatorSelection::node_min_expansion),
avoid_augmenting_path(AvoidAugmentingPath::avoid_and_pick_best),
skip_non_maximum_sides(SkipNonMaximumSides::skip),
graph_search_algorithm(GraphSearchAlgorithm::pseudo_depth_first_search),
dump_state(DumpState::no),
report_cuts(ReportCuts::yes),
pierce_rating(PierceRating::max_target_minus_source_hop_dist){}
void set(const std::string&var, const std::string&val){
int val_id = -1;
if(var == "SeparatorSelection" || var == "separator_selection"){
if(val == "node_min_expansion" || val_id == static_cast<int>(SeparatorSelection::node_min_expansion))
separator_selection = SeparatorSelection::node_min_expansion;
else if(val == "edge_min_expansion" || val_id == static_cast<int>(SeparatorSelection::edge_min_expansion))
separator_selection = SeparatorSelection::edge_min_expansion;
else if(val == "node_first" || val_id == static_cast<int>(SeparatorSelection::node_first))
separator_selection = SeparatorSelection::node_first;
else if(val == "edge_first" || val_id == static_cast<int>(SeparatorSelection::edge_first))
separator_selection = SeparatorSelection::edge_first;
else throw std::runtime_error("Unknown config value "+val+" for variable SeparatorSelection; valid are node_min_expansion, edge_min_expansion, node_first, edge_first");
}else if(var == "AvoidAugmentingPath" || var == "avoid_augmenting_path"){
if(val == "avoid_and_pick_best" || val_id == static_cast<int>(AvoidAugmentingPath::avoid_and_pick_best))
avoid_augmenting_path = AvoidAugmentingPath::avoid_and_pick_best;
else if(val == "do_not_avoid" || val_id == static_cast<int>(AvoidAugmentingPath::do_not_avoid))
avoid_augmenting_path = AvoidAugmentingPath::do_not_avoid;
else if(val == "avoid_and_pick_oldest" || val_id == static_cast<int>(AvoidAugmentingPath::avoid_and_pick_oldest))
avoid_augmenting_path = AvoidAugmentingPath::avoid_and_pick_oldest;
else if(val == "avoid_and_pick_random" || val_id == static_cast<int>(AvoidAugmentingPath::avoid_and_pick_random))
avoid_augmenting_path = AvoidAugmentingPath::avoid_and_pick_random;
else throw std::runtime_error("Unknown config value "+val+" for variable AvoidAugmentingPath; valid are avoid_and_pick_best, do_not_avoid, avoid_and_pick_oldest, avoid_and_pick_random");
}else if(var == "SkipNonMaximumSides" || var == "skip_non_maximum_sides"){
if(val == "skip" || val_id == static_cast<int>(SkipNonMaximumSides::skip))
skip_non_maximum_sides = SkipNonMaximumSides::skip;
else if(val == "no_skip" || val_id == static_cast<int>(SkipNonMaximumSides::no_skip))
skip_non_maximum_sides = SkipNonMaximumSides::no_skip;
else throw std::runtime_error("Unknown config value "+val+" for variable SkipNonMaximumSides; valid are skip, no_skip");
}else if(var == "GraphSearchAlgorithm" || var == "graph_search_algorithm"){
if(val == "pseudo_depth_first_search" || val_id == static_cast<int>(GraphSearchAlgorithm::pseudo_depth_first_search))
graph_search_algorithm = GraphSearchAlgorithm::pseudo_depth_first_search;
else if(val == "breadth_first_search" || val_id == static_cast<int>(GraphSearchAlgorithm::breadth_first_search))
graph_search_algorithm = GraphSearchAlgorithm::breadth_first_search;
else if(val == "depth_first_search" || val_id == static_cast<int>(GraphSearchAlgorithm::depth_first_search))
graph_search_algorithm = GraphSearchAlgorithm::depth_first_search;
else throw std::runtime_error("Unknown config value "+val+" for variable GraphSearchAlgorithm; valid are pseudo_depth_first_search, breadth_first_search, depth_first_search");
}else if(var == "DumpState" || var == "dump_state"){
if(val == "no" || val_id == static_cast<int>(DumpState::no))
dump_state = DumpState::no;
else if(val == "yes" || val_id == static_cast<int>(DumpState::yes))
dump_state = DumpState::yes;
else throw std::runtime_error("Unknown config value "+val+" for variable DumpState; valid are no, yes");
}else if(var == "ReportCuts" || var == "report_cuts"){
if(val == "yes" || val_id == static_cast<int>(ReportCuts::yes))
report_cuts = ReportCuts::yes;
else if(val == "no" || val_id == static_cast<int>(ReportCuts::no))
report_cuts = ReportCuts::no;
else throw std::runtime_error("Unknown config value "+val+" for variable ReportCuts; valid are yes, no");
}else if(var == "PierceRating" || var == "pierce_rating"){
if(val == "max_target_minus_source_hop_dist" || val_id == static_cast<int>(PierceRating::max_target_minus_source_hop_dist))
pierce_rating = PierceRating::max_target_minus_source_hop_dist;
else if(val == "min_source_hop_dist" || val_id == static_cast<int>(PierceRating::min_source_hop_dist))
pierce_rating = PierceRating::min_source_hop_dist;
else if(val == "max_target_hop_dist" || val_id == static_cast<int>(PierceRating::max_target_hop_dist))
pierce_rating = PierceRating::max_target_hop_dist;
else if(val == "max_target_minus_source_weight_dist" || val_id == static_cast<int>(PierceRating::max_target_minus_source_weight_dist))
pierce_rating = PierceRating::max_target_minus_source_weight_dist;
else if(val == "min_source_weight_dist" || val_id == static_cast<int>(PierceRating::min_source_weight_dist))
pierce_rating = PierceRating::min_source_weight_dist;
else if(val == "max_target_weight_dist" || val_id == static_cast<int>(PierceRating::max_target_weight_dist))
pierce_rating = PierceRating::max_target_weight_dist;
else if(val == "random" || val_id == static_cast<int>(PierceRating::random))
pierce_rating = PierceRating::random;
else if(val == "oldest" || val_id == static_cast<int>(PierceRating::oldest))
pierce_rating = PierceRating::oldest;
else if(val == "max_arc_weight" || val_id == static_cast<int>(PierceRating::max_arc_weight))
pierce_rating = PierceRating::max_arc_weight;
else if(val == "min_arc_weight" || val_id == static_cast<int>(PierceRating::min_arc_weight))
pierce_rating = PierceRating::min_arc_weight;
else if(val == "circular_hop" || val_id == static_cast<int>(PierceRating::circular_hop))
pierce_rating = PierceRating::circular_hop;
else if(val == "circular_weight" || val_id == static_cast<int>(PierceRating::circular_weight))
pierce_rating = PierceRating::circular_weight;
else throw std::runtime_error("Unknown config value "+val+" for variable PierceRating; valid are max_target_minus_source_hop_dist, min_source_hop_dist, max_target_hop_dist, max_target_minus_source_weight_dist, min_source_weight_dist, max_target_weight_dist, random, oldest, max_arc_weight, min_arc_weight, circular_hop, circular_weight");
}else if(var == "cutter_count"){
int x = std::stoi(val);
if(!(x>0))
throw std::runtime_error("Value for \"cutter_count\" must fullfill \"x>0\"");
cutter_count = x;
}else if(var == "random_seed"){
random_seed = std::stoi(val);
}else if(var == "source"){
int x = std::stoi(val);
if(!(x>=-1))
throw std::runtime_error("Value for \"source\" must fullfill \"x>=-1\"");
source = x;
}else if(var == "target"){
int x = std::stoi(val);
if(!(x>=-1))
throw std::runtime_error("Value for \"target\" must fullfill \"x>=-1\"");
target = x;
}else if(var == "thread_count"){
int x = std::stoi(val);
if(!(x>=1))
throw std::runtime_error("Value for \"thread_count\" must fullfill \"x>=1\"");
thread_count = x;
}else if(var == "max_cut_size"){
int x = std::stoi(val);
if(!(x>=1))
throw std::runtime_error("Value for \"max_cut_size\" must fullfill \"x>=1\"");
max_cut_size = x;
}else if(var == "max_imbalance"){
float x = std::stof(val);
if(!(0.5>=x&&x>=0.0))
throw std::runtime_error("Value for \"max_imbalance\" must fullfill \"0.5>=x&&x>=0.0\"");
max_imbalance = x;
}else if(var == "branch_factor"){
int x = std::stoi(val);
if(!(x>=1))
throw std::runtime_error("Value for \"branch_factor\" must fullfill \"x>=1\"");
branch_factor = x;
}else throw std::runtime_error("Unknown config variable "+var+"; valid are SeparatorSelection, AvoidAugmentingPath, SkipNonMaximumSides, GraphSearchAlgorithm, DumpState, ReportCuts, PierceRating, cutter_count, random_seed, source, target, thread_count, max_cut_size, max_imbalance, branch_factor");
}
std::string get(const std::string&var)const{
if(var == "SeparatorSelection" || var == "separator_selection"){
if(separator_selection == SeparatorSelection::node_min_expansion) return "node_min_expansion";
else if(separator_selection == SeparatorSelection::edge_min_expansion) return "edge_min_expansion";
else if(separator_selection == SeparatorSelection::node_first) return "node_first";
else if(separator_selection == SeparatorSelection::edge_first) return "edge_first";
else {assert(false); return "";}
}else if(var == "AvoidAugmentingPath" || var == "avoid_augmenting_path"){
if(avoid_augmenting_path == AvoidAugmentingPath::avoid_and_pick_best) return "avoid_and_pick_best";
else if(avoid_augmenting_path == AvoidAugmentingPath::do_not_avoid) return "do_not_avoid";
else if(avoid_augmenting_path == AvoidAugmentingPath::avoid_and_pick_oldest) return "avoid_and_pick_oldest";
else if(avoid_augmenting_path == AvoidAugmentingPath::avoid_and_pick_random) return "avoid_and_pick_random";
else {assert(false); return "";}
}else if(var == "SkipNonMaximumSides" || var == "skip_non_maximum_sides"){
if(skip_non_maximum_sides == SkipNonMaximumSides::skip) return "skip";
else if(skip_non_maximum_sides == SkipNonMaximumSides::no_skip) return "no_skip";
else {assert(false); return "";}
}else if(var == "GraphSearchAlgorithm" || var == "graph_search_algorithm"){
if(graph_search_algorithm == GraphSearchAlgorithm::pseudo_depth_first_search) return "pseudo_depth_first_search";
else if(graph_search_algorithm == GraphSearchAlgorithm::breadth_first_search) return "breadth_first_search";
else if(graph_search_algorithm == GraphSearchAlgorithm::depth_first_search) return "depth_first_search";
else {assert(false); return "";}
}else if(var == "DumpState" || var == "dump_state"){
if(dump_state == DumpState::no) return "no";
else if(dump_state == DumpState::yes) return "yes";
else {assert(false); return "";}
}else if(var == "ReportCuts" || var == "report_cuts"){
if(report_cuts == ReportCuts::yes) return "yes";
else if(report_cuts == ReportCuts::no) return "no";
else {assert(false); return "";}
}else if(var == "PierceRating" || var == "pierce_rating"){
if(pierce_rating == PierceRating::max_target_minus_source_hop_dist) return "max_target_minus_source_hop_dist";
else if(pierce_rating == PierceRating::min_source_hop_dist) return "min_source_hop_dist";
else if(pierce_rating == PierceRating::max_target_hop_dist) return "max_target_hop_dist";
else if(pierce_rating == PierceRating::max_target_minus_source_weight_dist) return "max_target_minus_source_weight_dist";
else if(pierce_rating == PierceRating::min_source_weight_dist) return "min_source_weight_dist";
else if(pierce_rating == PierceRating::max_target_weight_dist) return "max_target_weight_dist";
else if(pierce_rating == PierceRating::random) return "random";
else if(pierce_rating == PierceRating::oldest) return "oldest";
else if(pierce_rating == PierceRating::max_arc_weight) return "max_arc_weight";
else if(pierce_rating == PierceRating::min_arc_weight) return "min_arc_weight";
else if(pierce_rating == PierceRating::circular_hop) return "circular_hop";
else if(pierce_rating == PierceRating::circular_weight) return "circular_weight";
else {assert(false); return "";}
}else if(var == "cutter_count"){
return std::to_string(cutter_count);
}else if(var == "random_seed"){
return std::to_string(random_seed);
}else if(var == "source"){
return std::to_string(source);
}else if(var == "target"){
return std::to_string(target);
}else if(var == "thread_count"){
return std::to_string(thread_count);
}else if(var == "max_cut_size"){
return std::to_string(max_cut_size);
}else if(var == "max_imbalance"){
return std::to_string(max_imbalance);
}else if(var == "branch_factor"){
return std::to_string(branch_factor);
}else throw std::runtime_error("Unknown config variable "+var+"; valid are SeparatorSelection,AvoidAugmentingPath,SkipNonMaximumSides,GraphSearchAlgorithm,DumpState,ReportCuts,PierceRating, cutter_count, random_seed, source, target, thread_count, max_cut_size, max_imbalance, branch_factor");
}
std::string get_config()const{
std::ostringstream out;
out
<< std::setw(30) << "SeparatorSelection" << " : " << get("SeparatorSelection") << '\n'
<< std::setw(30) << "AvoidAugmentingPath" << " : " << get("AvoidAugmentingPath") << '\n'
<< std::setw(30) << "SkipNonMaximumSides" << " : " << get("SkipNonMaximumSides") << '\n'
<< std::setw(30) << "GraphSearchAlgorithm" << " : " << get("GraphSearchAlgorithm") << '\n'
<< std::setw(30) << "DumpState" << " : " << get("DumpState") << '\n'
<< std::setw(30) << "ReportCuts" << " : " << get("ReportCuts") << '\n'
<< std::setw(30) << "PierceRating" << " : " << get("PierceRating") << '\n'
<< std::setw(30) << "cutter_count" << " : " << get("cutter_count") << '\n'
<< std::setw(30) << "random_seed" << " : " << get("random_seed") << '\n'
<< std::setw(30) << "source" << " : " << get("source") << '\n'
<< std::setw(30) << "target" << " : " << get("target") << '\n'
<< std::setw(30) << "thread_count" << " : " << get("thread_count") << '\n'
<< std::setw(30) << "max_cut_size" << " : " << get("max_cut_size") << '\n'
<< std::setw(30) << "max_imbalance" << " : " << get("max_imbalance") << '\n'
<< std::setw(30) << "branch_factor" << " : " << get("branch_factor") << '\n';
return out.str();
}
};
}
#endif