mirror of
https://github.com/zenorogue/hyperrogue.git
synced 2024-11-30 15:39:54 +00:00
407 lines
12 KiB
C++
407 lines
12 KiB
C++
#include <iostream>
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#include <unordered_map>
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// pseudo-betweenness
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namespace dhrg {
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int out(int x, string cmt="") {
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println(hlog, "result = ", x, " ", cmt);
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return x;
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}
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ld outNZ(ld x, string cmt="") {
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return x;
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}
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int segmentlen(segment *s) {
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auto l = s->left;
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auto r = s->right;
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int i = 1;
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while(l != r) l = l->grightsibling(), i++;
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return i;
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}
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int get0(qtybox& b) { return b.minv == 0 ? b[0] : 0; }
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int tallybox_total(qtybox& box) {
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int tt = 0;
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for(int i=box.minv; i<box.maxv; i++)
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tt += box[i];
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return tt;
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}
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string segdesc(segment *s) {
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return hr::format("(%s-%s: len=%d, qty=%d/%d)", get_path(s->left).c_str(), get_path(s->right).c_str(), segmentlen(s), get0(s->qty), tallybox_total(s->qty));
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}
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int quickdist(segment *p1, segment *p2) {
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int d = 0;
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int d1 = p1->left->lev;
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int d2 = p2->left->lev;
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while(d1>d2) { p1 = p1->parent; d1--; d++; }
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while(d2>d1) { p2 = p2->parent; d2--; d++; }
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return segmentdist(p1, p2, d);
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}
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pair<ll, ll> betweenness3(mycell *c, int setid = 0) {
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vector<mycell*> neighbors;
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neighbors = allchildren(c);
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if(c->lev) {
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neighbors.push_back(c->grightsibling());
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neighbors.push_back(c->rightparent);
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if(c->leftparent != c->rightparent)
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neighbors.push_back(c->leftparent);
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neighbors.push_back(c->gleftsibling());
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}
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build_ack(c, setid);
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for(auto c1: neighbors) build_ack(c1, setid);
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std::unordered_map<segment*, int> info;
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for(segment* p: acknowledged) {
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int tot = tallybox_total(p->qty);
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info[p] += tot;
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segment *p2 = p->parent;
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while(p2) {
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if(p2->seen != -1) {
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info[p2] -= tot;
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break;
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}
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p2=p2->parent;
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}
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}
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for(segment* p: acknowledged) {
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p->seen = -1;
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}
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acknowledged.clear();
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vector<pair<segment*, int> > info_v;
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for(auto p: info) if(p.second) info_v.emplace_back(p);
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int NN = isize(neighbors);
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int NN2 = 2 * NN;
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vector<ll> bydir(NN2, 0);
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int bestdist;
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vector<int> bestdir;
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vector<segment*> neighbor_segs;
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for(auto n: neighbors) neighbor_segs.push_back(getsegment(n, n, setid, true));
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for(auto p: info_v) {
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if(p.first->left == c && p.first->right == c) continue;
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bestdist = 1000;
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bestdir.clear();
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for(int k=0; k<NN; k++) {
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int dist = quickdist(neighbor_segs[k], p.first);
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if(dist < bestdist) bestdist = dist, bestdir.clear();
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if(dist == bestdist) bestdir.push_back(k);
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}
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if(isize(bestdir) == 1)
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bydir[bestdir[0] * 2] += p.second;
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else if(isize(bestdir) > 2) {
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println(hlog, "many best dirs\n");
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throw hr_exception("many best dirs");
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}
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else if(bestdir[0] + 1 == bestdir[1])
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bydir[bestdir[0] + bestdir[1]] += p.second;
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else if(bestdir[0] == 0 && bestdir[1] == NN-1)
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bydir.back() += p.second;
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else {
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println(hlog, "non-adjacent best dirs\n");
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for(int k=0; k<NN; k++) print(hlog, quickdist(neighbor_segs[k], p.first), " "); printf("\n");
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println(hlog, "bestdir = ", bestdir);
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throw hr_exception("non-adjacent best dirs");
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}
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}
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ll result = 0;
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int here = getsegment(c, c, setid, true)->qty[0];
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ll elsewhere = 0;
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for(int a=0; a<NN2; a++) elsewhere += bydir[a];
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result += (here + elsewhere) * (here + elsewhere);
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// for(int a=0; a<NN2; a++) printf("%3d ", bydir[a]); printf("HERE %d EW=%d N=%d\n", here, elsewhere, N);
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for(int a=0; a<NN2; a+=2) {
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result -= bydir[a] * bydir[a];
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result -= 2 * bydir[a] * bydir[(a+1) % NN2];
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result -= 2 * bydir[a] * bydir[(a+2) % NN2];
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result -= 2 * bydir[a] * bydir[(a+3) % NN2];
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result -= 2 * bydir[a] * bydir[(a+NN2-1) % NN2];
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result -= 2 * bydir[a] * bydir[(a+NN2-3) % NN2];
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result -= bydir[a+1] * bydir[(a+1) % NN2];
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result -= 2 * bydir[a+1] * bydir[(a+3) % NN2];
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result -= 2 * bydir[a+1] * bydir[(a+5) % NN2];
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}
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ll result2 = here * here * NN + 2 * here * elsewhere * NN;
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for(int a=0; a<NN2; a++) if(bydir[a])
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for(int b=0; b<a; b++) if(bydir[b])
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result2 += 2 * bydir[a] * bydir[b] * min(a-b, NN2+b-a);
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return {result, result2};
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}
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bool dependent(segment *p1, segment *p2) {
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if(is_insegment(p1->left, p2) || is_insegment(p1->right, p2) || is_insegment(p2->left, p1) || is_insegment(p2->right, p1))
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return true;
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mycell *mright;
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mright = p1->right;
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for(int u=0; u<=cgi.expansion->sibling_limit; u++) {
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mright->build();
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if(mright == p2->left) return true;
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mright = mright->grightsibling();
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}
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mright = p2->right;
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for(int u=0; u<=cgi.expansion->sibling_limit; u++) {
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mright->build();
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if(mright == p1->left) return true;
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mright = mright->grightsibling();
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}
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return false;
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}
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template<class T> void children(segment *s, const T& f) {
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s=s->firstchild;
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while(s) {
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f(s);
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s = s->nextchild;
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}
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}
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typedef long double betweenness_type;
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betweenness_type ack(int d01, int d02, int d12) {
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return pow(cgi.expansion->get_growth(), -(d01 + d02 - d12));
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// if(d01 + d02 == d12+2) return 1;
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// return 0;
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}
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int sd(segment *s1, segment *s2) {
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/*
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for(auto l = s1->left;; l = l->grightsibling()) {
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if(is_insegment(l, s2)) return 0;
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if(l == s1->right) break;
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}
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for(auto l = s2->left;; l = l->grightsibling()) {
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if(is_insegment(l, s1)) return 0;
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if(l == s2->right) break;
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}
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*/
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return quickdist(s1, s2);
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}
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// di0: distance from Hidden to 0
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// di0: distance from Hidden to 1
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betweenness_type brec_fix_other(int di0, const vector<segment*>& lst, int pos, int di1, segment *s1) {
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// indent_measure im("brec-fo " + its(pos) + " in s1: " + segdesc(s1) + " di0= " + its(di0) + " di1= " + its(di1) );
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segment *s0 = lst[pos];
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if(!dependent(s0, s1) || pos == 0)
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return outNZ(tallybox_total(s1->qty) * ack(di0+pos, sd(s0, s1)+pos, di1));
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betweenness_type total = 0;
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if(get0(s1->qty))
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total += get0(s1->qty) * ack(di0+pos, sd(s0,s1)+pos, di1);
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for(segment *c1 = s1->firstchild; c1; c1 = c1->nextchild)
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total += brec_fix_other(di0+1, lst, pos-1, di1+1, c1);
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return outNZ(total);
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}
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map<tuple<int, segment*, segment* >, betweenness_type> memo[BOXSIZE];
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betweenness_type brec_fix_main(int d1, segment *s1, int d2, segment *s2);
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betweenness_type brec_fix_main_actual(int d1, segment *s1, int d2, segment *s2) {
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betweenness_type total = 0;
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if(get0(s1->qty))
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total += get0(s1->qty) * tallybox_total(s2->qty) * ack(d1, d2, sd(s1, s2));
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if(get0(s2->qty))
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total += get0(s2->qty) * tallybox_total(s1->qty) * ack(d1, d2, sd(s1, s2));
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if(get0(s1->qty) && get0(s2->qty))
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total -= get0(s1->qty) * get0(s2->qty) * ack(d1, d2, sd(s1, s2));
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for(segment *c1 = s1->firstchild; c1; c1 = c1->nextchild)
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for(segment *c2 = s2->firstchild; c2; c2 = c2->nextchild)
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total += brec_fix_main(d1+1, c1, d2+1, c2);
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return total;
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}
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betweenness_type brec_fix_main(int d1, segment *s1, int d2, segment *s2) {
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// indent_measure im("brec-main " + its(d1) + " in s1: " + segdesc(s1) + " " + its(d2) + " in s2: " + segdesc(s2));
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if(!dependent(s1, s2))
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return outNZ(tallybox_total(s1->qty) * tallybox_total(s2->qty) * ack(d1, d2, sd(s1, s2)));
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// if(s1->left->lev >= 10) return brec_fix_main_actual(d1, s1, d2, s2);
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auto& mem = memo[s1->left->lev][make_tuple(d1+d2, s1, s2)];
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if(mem) return mem-1;
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auto total = brec_fix_main_actual(d1, s1, d2, s2);
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mem = total + 1;
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return total;
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}
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betweenness_type brec(const vector<segment*>& lst, int pos, segment *s1, segment *s2) {
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segment *s0 = lst[pos];
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// indent_measure im("brec " + its(pos) + " in s1: " + segdesc(s1) + " in s2: " + segdesc(s2) + " s0 = " + segdesc(s0) );
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bool id01 = !dependent(s0, s1);
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bool id02 = !dependent(s0, s2);
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if(id01 && id02) {
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int di01 = sd(s0, s1);
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int di02 = sd(s0, s2);
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return outNZ(brec_fix_main(di01+pos, s1, di02+pos, s2));
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}
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else {
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bool id12 = (id01 || id02) && !dependent(s1, s2);
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if(id12 && id02) {
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//01 not
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int di12 = sd(s1, s2);
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int di02 = sd(s0, s2);
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return outNZ(tallybox_total(s2->qty) * brec_fix_other(di02, lst, pos, di12, s1));
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}
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else if(id12 && id01) {
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int di12 = sd(s1, s2);
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int di01 = sd(s0, s1);
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return outNZ(tallybox_total(s1->qty) * brec_fix_other(di01, lst, pos, di12, s2));
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}
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else if(pos == 0)
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return outNZ(brec_fix_main(sd(s0, s1), s1, sd(s0, s2), s2));
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else {
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betweenness_type total = 0;
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if(get0(s1->qty))
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total += get0(s1->qty) * brec_fix_other(sd(s0, s1), lst, pos, sd(s1, s2), s2);
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if(get0(s2->qty))
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total += get0(s2->qty) * brec_fix_other(sd(s0, s2), lst, pos, sd(s1, s2), s1);
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if(get0(s1->qty) && get0(s2->qty))
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total -= get0(s1->qty) * get0(s2->qty) * ack(pos + sd(s0, s1), pos + sd(s0, s2), sd(s1, s2));
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for(segment *c1 = s1->firstchild; c1; c1 = c1->nextchild)
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for(segment *c2 = s2->firstchild; c2; c2 = c2->nextchild)
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total += brec(lst, pos-1, c1, c2);
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return outNZ(total);
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}
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}
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}
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betweenness_type betweenness4(mycell *c, int setid = 0) {
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segment *s = getsegment(c, c, setid, true);
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vector<segment*> lst;
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while(s) { lst.push_back(s); s = s->parent; }
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segment *rs = getsegment(mroot, mroot, setid, true);
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return brec(lst, isize(lst)-1, rs, rs);
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}
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bool neq(betweenness_type a, betweenness_type b) {
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return abs(a-b) > 1e-6;
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}
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void compute_betweenness(bool verify) {
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progressbar pb(N, "compute_betweenness");
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int errorcount = 0, errorcount2 = 0;
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for(int i=0; i<N; i++) {
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long long total_cache = 0, x_total_cache = 0;
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int clean_level = -1;
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for(auto& mm: memo) {
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ll s = mm.size();
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if(!s) continue;
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total_cache += s;
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if(total_cache >= 8000000000ll / 64) { mm.clear(); }
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else { x_total_cache += s; clean_level++; }
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}
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if(total_cache != x_total_cache) printf("cleanup from %lld to %lld cache items, at level %d\n", total_cache, x_total_cache, clean_level);
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// if(i != 1) continue;
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mycell *c1 = vertices[i];
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// add_to_set(c1, -1, 0);
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auto b = betweenness3(c1);
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// add_to_set(c1, 1, 0);
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auto b4 = betweenness4(c1);
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print(hlog, hr::format("B;%10lld;%10lld;%20.10f;%3d;%-40s", b.first, b.second, (double) b4, vertices[i]->lev, rogueviz::vdata[i].name.c_str()));
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if(verify) {
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/*
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betweenness_type a = b.first;
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betweenness_type b = 0;
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for(int j=0; j<N; j++)
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for(int k=0; k<N; k++)
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b += ack(quickdist(vertices[j], c1), quickdist(vertices[k], c1), quickdist(vertices[j], vertices[k]));
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if(quickdist(vertices[j], vertices[k]) == quickdist(vertices[j], c1) + quickdist(vertices[k], c1)) {
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// iprintf(" %-40s %-40s %d/%d/%d\n", rogueviz::vdata[j].name.c_str(), rogueviz::vdata[k].name.c_str(), quickdist(vertices[j], vertices[k]), quickdist(vertices[j], c1), quickdist(vertices[k], c1));
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b++;
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}
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if(neq(a, b)) iprintf(" ERROR: %f\x1b[K\n", double(b));
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else iprintf(" CORRECT %f\x1b[K\n", double(b));
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if(b-a>0) errorcount += (b-a);
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if(b-a<0) errorcount2 += (a-b);
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if(neq(a, b)) exit(1);
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*/
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}
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else printf("\n");
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pb++;
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}
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if(verify) println(hlog, hr::format("errorcount = %d/%d\n", errorcount, errorcount2));
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}
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void build(mycell *c, int lev, string s) {
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int id = 0;
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if(lev) for(mycell *c1: allchildren(c)) { build(c1, lev-1, s + std::to_string(id)); id++; }
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printf("* %s\n", s.c_str());
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vertices.push_back(c);
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rogueviz::vdata.emplace_back();
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rogueviz::vdata.back().name = s;
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/*
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vertices.push_back(c);
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rogueviz::vdata.emplace_back();
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rogueviz::vdata.back().name = s;
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*/
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}
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void build_all(int d) {
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build(mroot, d, "");
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N = isize(vertices);
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counttallies();
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}
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void load_test() {
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string s;
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while(getline(std::cin, s)) {
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mycell *mc = mroot;
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if(s[0] == '#') continue;
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for(char c: s) if(c >= '0' && c <= '9') mc = allchildren(mc) [c - '0'];
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vertices.push_back(mc);
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rogueviz::vdata.emplace_back();
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rogueviz::vdata.back().name = "PATH:" + s;
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}
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// build(mroot, 5, "");
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N = isize(vertices);
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counttallies();
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// add_to_set(vertices[0], -1, 0);
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}
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}
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