Add graph references

2026-06-28 13:49:01 +01:00
parent 0a9807e448
commit a11edf0c53
2578 changed files with 868045 additions and 0 deletions
@@ -0,0 +1,150 @@
+/*
+   IGraph library.
+   Copyright (C) 2025  The igraph development team <igraph@igraph.org>
+
+   This program 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 2 of the License, or
+   (at your option) any later version.
+
+   This program 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 <https://www.gnu.org/licenses/>.
+*/
+#include <igraph.h>
+
+#include "bench.h"
+#include "igraph_spatial.h"
+
+#include <float.h>
+
+void bench_lune(igraph_int_t test_nr, igraph_int_t point_count, igraph_int_t dimensions, igraph_real_t beta) {
+    igraph_matrix_t points;
+    igraph_t g;
+    char msg[200];
+
+    igraph_matrix_init(&points, point_count, dimensions);
+
+    for (igraph_int_t point = 0; point < point_count; point++) {
+        for (igraph_int_t dim = 0; dim < dimensions; dim++) {
+            MATRIX(points, point, dim) = RNG_UNIF01();
+        }
+    }
+
+    snprintf(msg, sizeof(msg) / sizeof(msg[0]),
+             "%3"IGRAPH_PRId" Lune based beta skeleton in %dD, beta=%.3f, n=%6" IGRAPH_PRId,
+             test_nr, (int) dimensions, beta, point_count);
+
+    BENCH(msg, igraph_lune_beta_skeleton(&g, &points, beta));
+
+    igraph_destroy(&g);
+    igraph_matrix_destroy(&points);
+
+}
+
+void bench_circle(igraph_int_t test_nr, igraph_int_t point_count, igraph_int_t dimensions, igraph_real_t beta) {
+    igraph_matrix_t points;
+    igraph_t g;
+    char msg[200];
+
+    igraph_matrix_init(&points, point_count, dimensions);
+
+    for (igraph_int_t point = 0; point < point_count; point++) {
+        for (igraph_int_t dim = 0; dim < dimensions; dim++) {
+            MATRIX(points, point, dim) = RNG_UNIF01();
+        }
+    }
+
+    snprintf(msg, sizeof(msg) / sizeof(msg[0]),
+             "%3"IGRAPH_PRId" Circle based beta skeleton in %dD, beta=%3f, n=%6" IGRAPH_PRId,
+             test_nr, (int) dimensions, beta, point_count);
+
+    BENCH(msg, igraph_circle_beta_skeleton(&g, &points, beta));
+
+    igraph_destroy(&g);
+    igraph_matrix_destroy(&points);
+
+}
+
+void bench_gabriel(igraph_int_t test_nr, igraph_int_t point_count, igraph_int_t dimensions, igraph_real_t beta_cutoff) {
+    igraph_matrix_t points;
+    igraph_vector_t edge_weights;
+    igraph_t g;
+    char msg[200];
+
+    igraph_matrix_init(&points, point_count, dimensions);
+    igraph_vector_init(&edge_weights, 0);
+
+    for (igraph_int_t point = 0; point < point_count; point++) {
+        for (igraph_int_t dim = 0; dim < dimensions; dim++) {
+            MATRIX(points, point, dim) = RNG_UNIF01();
+        }
+    }
+
+
+    snprintf(msg, sizeof(msg) / sizeof(msg[0]),
+             "%3"IGRAPH_PRId" Beta weighted gabriel graph in %dD, cutoff=%3f, n=%6" IGRAPH_PRId,
+             test_nr, (int) dimensions, beta_cutoff, point_count);
+
+    BENCH(msg, igraph_beta_weighted_gabriel_graph(&g, &edge_weights,  &points, beta_cutoff));
+
+    igraph_vector_destroy(&edge_weights);
+    igraph_destroy(&g);
+    igraph_matrix_destroy(&points);
+
+}
+
+int main(void) {
+    igraph_int_t test_nr = 0;
+    bench_lune(++test_nr, 100, 2, 2);
+    bench_lune(++test_nr, 1000, 2, 2);
+    bench_lune(++test_nr, 10000, 2, 2);
+    bench_lune(++test_nr, 100000, 2, 2);
+    bench_lune(++test_nr, 100, 3, 2);
+    bench_lune(++test_nr, 1000, 3, 2);
+    bench_lune(++test_nr, 10000, 3, 2);
+    bench_lune(++test_nr, 100000, 3, 2);
+    bench_lune(++test_nr, 1000, 4, 2);
+
+    bench_lune(++test_nr, 10000, 2, 1);
+    bench_lune(++test_nr, 10000, 2, 2);
+    bench_lune(++test_nr, 10000, 2, 4);
+    bench_lune(++test_nr, 10000, 2, 8);
+    bench_lune(++test_nr, 10000, 2, 16);
+    bench_lune(++test_nr, 10000, 2, 32);
+    bench_lune(++test_nr, 10000, 2, 64);
+    bench_lune(++test_nr, 10000, 2, 128);
+    bench_lune(++test_nr, 10000, 2, 256);
+    bench_lune(++test_nr, 10000, 2, 512);
+    bench_lune(++test_nr, 10000, 2, 1024);
+    bench_lune(++test_nr, 1000, 2, 0.9);
+    bench_lune(++test_nr, 1000, 2, 0.5);
+    bench_lune(++test_nr, 1000, 2, 0.1);
+
+
+    bench_circle(++test_nr, 100, 2, 2);
+    bench_circle(++test_nr, 1000, 2, 2);
+    bench_circle(++test_nr, 10000, 2, 2);
+    bench_circle(++test_nr, 100000, 2, 2);
+
+    bench_circle(++test_nr, 10000, 2, 2);
+    bench_circle(++test_nr, 10000, 2, 3);
+    bench_circle(++test_nr, 10000, 2, 5);
+    bench_circle(++test_nr, 10000, 2, 15);
+    bench_circle(++test_nr, 10000, 2, 50);
+
+    bench_gabriel(++test_nr, 100, 2, 2);
+    bench_gabriel(++test_nr, 1000, 2, 2);
+    bench_gabriel(++test_nr, 10000, 2, 2);
+    bench_gabriel(++test_nr, 100000, 2, 2);
+
+    bench_gabriel(++test_nr, 100, 3, 2);
+    bench_gabriel(++test_nr, 1000, 3, 2);
+    bench_gabriel(++test_nr, 10000, 3, 2);
+    bench_gabriel(++test_nr, 100000, 3, 2);
+    return 0;
+}