Changed generation of graphs. Generated new dataset.

dataset/generate_graph.py

@@ -1,40 +1,32 @@
 import random
 
 
-def sort_edges(edges, edge):
-    if edge[0] > edge[1]:
-        temp = edge[0]
-        edge[0] = edge[1]
-        edge[1] = temp
-    index = 0
-    for i in edges:
-        if edge[0] < i[0]:
-            break
-        elif edge[0] == i[0] and edge[1] < i[1]:
-            break
-        else:
-            index += 1
-    edges.insert(index, edge)
-
-
 def generate_tree_from_prufer_code(code):
-    L1 = code[:]
+    L1 = {}
     L2 = []
     edges = []
-    nodes = set()
-    for i in range(len(code)+2):
-        L2.append(i+1)
-        nodes.add(i+1)
+
+    for node in range(len(code)+2):
+        L2.append(node+1)
+    for node in L2:
+        L1[node] = 0
+    for node in code:
+        L1[node] += 1
+
     for k in range(len(L1)):
         current_node = L2[0]
         counter = 1
-        while L1.count(current_node) > 0:
-            current_node = L2[counter]
-            counter += 1
-        sort_edges(edges, [code[k], current_node])
-        L1.remove(code[k])
-        L2.remove(current_node)
-    sort_edges(edges, [L2[0], L2[1]])
+        if len(L2) > 2:
+            while L1[current_node] > 0:
+                current_node = L2[counter]
+                counter += 1
+            if code[k] < current_node:
+                edges.append([code[k], current_node])
+            else:
+                edges.append([current_node, code[k]])
+            L1[code[k]] -= 1
+            L2.remove(current_node)
+    edges.append([L2[0], L2[1]])
     return edges
 
 
@@ -69,6 +61,7 @@ def generate_random_graph(n: int, log=False):
 
 
 def write_graph_to_file(graph, filename, path="graphs/"):
+    print("writing to file")
     with open(path + filename, 'w') as file:
         for edge in graph:
             weight = random.randint(1, 100)
@@ -81,6 +74,7 @@ def read_graph_from_file(filename, path="graphs/"):
     A = {}
     A_b = {}
     w = {}
+
     with open(path + filename, 'r') as file:
         line = file.readline()
         while line != '':
@@ -109,10 +103,10 @@ def read_graph_from_file(filename, path="graphs/"):
 
 
 if __name__ == '__main__':
+    n = [100, 500, 1_000, 2_500, 5_000, 10_000, 25_000, 50_000, 100_000, 200_000]
     for i in range(1, 11):
-        n = random.randint(3000, 6000)
-        print("generating graph:", i, "of", 10, "with", n, "nodes")
-        g = generate_random_graph(n, log=True)
+        print("generating graph:", i, "of", 10, "with", n[i-1], "nodes")
+        g = generate_random_graph(n[i-1], log=True)
         f = "graph" + str(i)
         write_graph_to_file(g, f)
-
+        print()

dataset/generate_grid.py

@@ -155,8 +155,11 @@ def read_grid_graph_from_file(filename, path="grids/"):
 
 
 if __name__ == "__main__":
+    n = [(20, 20), (50, 50), (100, 100), (150, 150), (250, 250), (400, 400), (500, 500),
+         (600, 600), (750, 750), (1000, 1000)]
     for i in range(1, 11):
-        print("generating graph:", i, "of", 10)
+        print("generating graph:", i, "of", 10, "with size", n[i-1])
         f = "grid" + str(i)
-        g = generate_grid(rand.randint(202, 502), rand.randint(202, 502))
-        write_grid_as_graph_to_file(g, f)
+        g = generate_grid(n[i-1][0]+2, n[i-1][1]+2)
+        print("writing to file")
+        write_grid_as_graph_to_file(g, f)