mirror of
https://github.com/zenorogue/hyperrogue.git
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ced3bbcad4
C++20 introduces `std::format` and we `using namespace std`, so some of these would be ambiguous in C++20.
341 lines
8.3 KiB
C++
341 lines
8.3 KiB
C++
// local search
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namespace dhrg {
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int newmoves = 0;
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int iterations = 0;
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int distlimit;
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void dispnewmoves() {
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if(newmoves == 0) printf(".");
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else if(newmoves < 10) printf("%c", '0'+newmoves);
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else printf("%c", 'a' + newmoves/10);
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newmoves = 0;
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}
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vector<char> tomove;
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bool smartmove = false;
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bool dorestart = false;
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int lastmoves;
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int movearound() {
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indenter_finish im("movearound");
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int total = 0;
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if(smartmove) for(bool b: tomove) if(b) total++;
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if(total == 0) {
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tomove.resize(0), tomove.resize(N, true);
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}
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int moves = 0;
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ld llo = loglik_chosen();
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// int im = 0;
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{progressbar pb(N, "tomove: " + its(total) + " (last: " + its(lastmoves) + ")");
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for(int i=0; i<N; i++) {
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if(!tomove[i]) { pb++; continue; }
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tomove[i] = false;
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// if(i && i % 100 == 0) dispnewmoves();
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mycell *mc = vertices[i];
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tallyedgesof(i, -1, mc);
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add_to_set(mc, -1, 0);
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add_to_tally(mc, -1, 0);
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// im += size(rogueviz::vdata[i].edges);
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mycell *mc2[FULL_EDGE];
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ld llo2[FULL_EDGE];
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int bestd = -1;
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ld bestllo = llo;
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auto nei = allneighbors(mc);
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for(int d=0; d<isize(nei); d++) {
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mc2[d] = nei[d];
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if(mc2[d]->lev >= distlimit) continue;
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tallyedgesof(i, 1, mc2[d]);
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add_to_tally(mc2[d], 1, 0);
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if(lc_type == 'C')
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add_to_set(mc2[d], 1, 0);
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llo2[d] = loglik_chosen();
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if(lc_type == 'C')
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add_to_set(mc2[d], -1, 0);
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if(llo2[d] > bestllo) bestd = d, bestllo = llo2[d];
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add_to_tally(mc2[d], -1, 0);
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tallyedgesof(i, -1, mc2[d]);
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}
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if(bestd >= 0) {
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moves++; newmoves++;
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vertices[i] = mc = mc2[bestd];
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llo = llo2[bestd];
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tomove[i] = true;
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for(auto p: rogueviz::vdata[i].edges) {
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int j = p.second->i ^ p.second->j ^ i;
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tomove[j] = true;
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}
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}
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tallyedgesof(i, 1, mc);
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add_to_tally(mc, 1, 0);
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add_to_set(mc, 1, 0);
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pb++;
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}}
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// dispnewmoves();
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println(hlog, " moves = ", moves);
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return lastmoves = moves;
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}
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int move_restart() {
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indenter_finish im("move_restart");
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ld llo = loglik_chosen();
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array<array<int, 128>, 2> distances_map = {0};
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int moves = 0;
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// int im = 0;
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{progressbar pb(N, "move_restart");
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for(int i=0; i<N; i++) {
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// if(i && i % 100 == 0) dispnewmoves();
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mycell *mc = vertices[i];
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tallyedgesof(i, -1, mc);
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add_to_set(mc, -1, 0);
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add_to_tally(mc, -1, 0);
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auto getllo = [&] (mycell *m) {
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tallyedgesof(i, 1, m);
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add_to_tally(m, 1, 0);
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if(lc_type == 'C')
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add_to_set(m, 1, 0);
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ld res = loglik_chosen();
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if(lc_type == 'C')
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add_to_set(m, -1, 0);
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add_to_tally(m, -1, 0);
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tallyedgesof(i, -1, m);
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return res;
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};
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mycell* whereto = mroot;
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ld bestllo = getllo(whereto);
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bool changed = true;
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while(changed) {
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changed = false;
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mycell *mc2 = whereto;
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auto nei2 = allneighbors(whereto);
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for(mycell *mcn: nei2) {
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ld newllo = getllo(mcn);
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if(newllo > bestllo)
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bestllo = newllo, mc2 = mcn, changed = true;
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}
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if(changed) whereto = mc2;
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}
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bool better = bestllo > llo;
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distances_map[better][quickdist(whereto, mc)]++;
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if(better) {
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llo = bestllo;
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vertices[i] = mc = whereto;
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moves++;
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}
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tallyedgesof(i, 1, mc);
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add_to_tally(mc, 1, 0);
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add_to_set(mc, 1, 0);
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pb++;
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}}
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// dispnewmoves();
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println(hlog, " moves = ", moves);
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print(hlog, " stats:");
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for(int a=0; a<2; a++) for(int b=0; b<128; b++) {
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int d = distances_map[a][b];
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if(d) print(hlog, hr::format(" %d/%d:%d", a,b, d));
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}
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println(hlog, "\n");
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return lastmoves = moves;
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}
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// 7: 12694350 3847975716
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// 6: 39472959 11969080911
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void verifycs() {
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long long edgecs = 0, totalcs = 0;
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for(int u=0; u<MAXDIST; u++)
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edgecs += edgetally[u] * u*u,
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totalcs += tally[u] * u*u;
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print(hlog, "edgecs=", hr::format("%lld", edgecs), " totalcs=", hr::format("%lld", totalcs));
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}
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void preparegraph() {
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indenter_finish im("preparegraph");
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using namespace rogueviz;
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M = 0;
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vertices.resize(N);
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if(1) {
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progressbar pb(N, "Finding all");
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for(int i=0; i<N; i++) {
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M += isize(vdata[i].edges);
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pb++;
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}
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M /= 2;
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}
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memoryInfo();
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cont_logistic.setRT(graph_R, graph_T);
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counttallies();
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memoryInfo();
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verifycs();
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if(1) {
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indenter_finish im("optimizing parameters");
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ld factor = 1/log(cgi.expansion->get_growth());
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current_logistic.setRT(factor * graph_R, factor * graph_T);
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saved_logistic = current_logistic;
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// for(int u=0; u<MAXDIST; u++) iprintf("%d/%Ld\n", edgetally[u], tally[u]);
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fix_logistic_parameters(current_logistic, loglik_logistic, "logistic", 1e-6);
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writestats();
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fflush(stdout);
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}
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iterations = 0;
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distlimit = 0;
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for(int j=0; j<BOXSIZE; j++)
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if(getsegment(mroot,mroot,0)->qty[j])
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distlimit = min(j+2, BOXSIZE-1);
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println(hlog, "Using distlimit = ", distlimit);
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}
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void read_graph_full(const string& fname) {
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using namespace rogueviz;
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memoryInfo();
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if(true) {
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indenter_finish im("Read graph");
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// N = isize(vdata);
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read_graph(fname, false, false, false);
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vertices.resize(N);
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progressbar pb(N, "Translating to cells");
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for(int i=0; i<N; i++) {
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#if BUILD_ON_HR
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cell *c = currentmap->gamestart();
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hyperpoint T0 = vdata[i].m->at * C0;
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virtualRebase2(vdata[i].m->base, T0, true);
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vertices[i] = find_mycell(vdata[i].m->base);
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#else
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vertices[i] = find_mycell_by_path(computePath(vdata[i].m->at));
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#endif
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vdata[i].m->at = Id;
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pb++;
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// printf("%s\n", computePath(vdata[i].m->base).c_str());
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}
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}
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recycle_compute_map();
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preparegraph();
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}
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void graph_from_rv() {
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using namespace rogueviz;
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memoryInfo();
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vertices.resize(N);
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progressbar pb(N, "converting RogueViz to DHRG");
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for(int i=0; i<N; i++) {
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#if BUILD_ON_HR
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vertices[i] = find_mycell(vdata[i].m->base);
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#else
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auto path1 = computePath(vdata[i].m->base);
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vertices[i] = find_mycell_by_path(path1);
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#endif
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vdata[i].m->at = Id;
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pb++;
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}
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preparegraph();
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}
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bool iteration() {
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iterations++;
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indenter_finish im("Iteration #" + its(iterations));
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int m = movearound();
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if(!m && dorestart) m = move_restart();
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if(!m) return false;
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fix_logistic_parameters(current_logistic, loglik_logistic, "logistic", 1e-6);
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writestats();
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fflush(stdout);
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return true;
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}
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void embedder_loop(int max) {
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indenter_finish im("embedder_loop");
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ld lastopt = loglik_chosen();
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while(max-- && iteration()) {
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ld curopt = loglik_chosen();
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println(hlog, "current = %", curopt);
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if(curopt <= lastopt) {
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println(hlog, "Not enough improvement -- breaking");
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break;
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}
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lastopt = curopt;
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}
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}
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void save_embedding(const string s) {
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FILE *f = fopen(s.c_str(), "wt");
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for(int i=0; i<N; i++) {
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string p = get_path(vertices[i]);
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if(p == "") p = "X";
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fprintf(f, "%s %s\n", rogueviz::vdata[i].name.c_str(), p.c_str());
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}
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fclose(f);
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}
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void load_embedded(const string s) {
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if(true) {
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read_graph(s, false, false, false);
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indenter_finish im("Read graph");
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}
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string t = rogueviz::fname + "-dhrg.txt";
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if(true) {
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progressbar pb(N, "reading embedding");
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vertices.resize(N, NULL);
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map<string, int> ids;
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for(int i=0; i<N; i++) ids[rogueviz::vdata[i].name] = i;
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FILE *f = fopen(t.c_str(), "rt");
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while(true) {
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char who[500], where[500];
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who[0] = 0;
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fscanf(f, "%s%s", who, where);
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if(who[0] == 0) break;
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if(!ids.count(who)) printf("unknown vertex: %s\n", who);
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string wh = where;
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if(wh == "X") wh = "";
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vertices[ids[who]] = find_mycell_by_path(wh);
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pb++;
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}
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fclose(f);
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for(int i=0; i<N; i++) if(vertices[i] == NULL) {
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printf("unmapped: %s\n", rogueviz::vdata[i].name.c_str());
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exit(1);
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}
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}
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preparegraph();
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}
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}
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