ca marche po
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gdamms
parent
4a5e0a46de
commit
21646a6fde
254
notebook.ipynb
254
notebook.ipynb
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@ -27,9 +27,15 @@
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"\u001b[32m\u001b[1m Resolving\u001b[22m\u001b[39m package versions...\n",
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"\u001b[32m\u001b[1m No Changes\u001b[22m\u001b[39m to `~/.julia/environments/v1.6/Project.toml`\n",
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"\u001b[32m\u001b[1m No Changes\u001b[22m\u001b[39m to `~/.julia/environments/v1.6/Manifest.toml`\n",
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"\u001b[32m\u001b[1mPrecompiling\u001b[22m\u001b[39m project...\n",
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"\u001b[32m ✓ \u001b[39mTestOptinum\n",
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" 1 dependency successfully precompiled in 6 seconds (158 already precompiled)\n",
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"\u001b[32m\u001b[1m Resolving\u001b[22m\u001b[39m package versions...\n",
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"\u001b[32m\u001b[1m No Changes\u001b[22m\u001b[39m to `~/.julia/environments/v1.6/Project.toml`\n",
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"\u001b[32m\u001b[1m No Changes\u001b[22m\u001b[39m to `~/.julia/environments/v1.6/Manifest.toml`\n"
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"\u001b[32m\u001b[1m No Changes\u001b[22m\u001b[39m to `~/.julia/environments/v1.6/Manifest.toml`\n",
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"\u001b[32m\u001b[1mPrecompiling\u001b[22m\u001b[39m project...\n",
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"\u001b[32m ✓ \u001b[39mTestOptinum\n",
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" 1 dependency successfully precompiled in 2 seconds (158 already precompiled)\n"
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]
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}
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],
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@ -48,16 +54,16 @@
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},
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{
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"cell_type": "code",
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"execution_count": 9,
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"execution_count": 3,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"(Any[42, 40, 12, 25], Any[7, 4, 3, 5], 10)"
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"readKnapInstance (generic function with 1 method)"
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]
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},
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"execution_count": 9,
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"execution_count": 3,
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"metadata": {},
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"output_type": "execute_result"
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}
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@ -117,7 +123,7 @@
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}
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],
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"source": [
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"function TestsSondabilite_relaxlin(x, price, weight, capacity, varsbin, BestProfit, Bestsol)\n",
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"function TestsSondabilite_relaxlin(x, price, weight, capacity, BestProfit, Bestsol)\n",
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" TA, TO, TR = false, false, false\n",
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" if (!Constraints(x, weight, capacity)) # Test de faisabilite\n",
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" TA = true\n",
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@ -130,6 +136,7 @@
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" println(\"TR\")\n",
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" #if (value(benef) >= BestProfit)\n",
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" if (Objective(x, price) >= BestProfit)\n",
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" println(\"oiuiiiiii\")\n",
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" Bestsol = x\n",
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" #BestProfit=value(benef)\n",
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" BestProfit = Objective(x, price)\n",
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@ -166,74 +173,65 @@
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],
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"source": [
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"\n",
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"function SeparerNoeud_relaxlin(varsshouldbebinary, listvars, listvals)\n",
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"function SeparerNoeud_relaxlin(price, listvars, listvals)\n",
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" # le noeud est non-sondable. Appliquer le critère de séparation pour le séparer en sous-noeuds et choisir un noeud-fils le plus à gauche \n",
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" \n",
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"\n",
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" # Cas du noeud le plus à gauche\n",
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" predX = first(listvars)\n",
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" n = length(predX)\n",
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" nextX0 = predX\n",
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" for xi in predX\n",
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" \n",
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" nextX1 = predX\n",
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" val0 = 0\n",
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" val1 = 0\n",
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" for i in 1:n\n",
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" if predX[i] == -1\n",
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" nextX0[i] = 0\n",
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" nextX1[i] = 1\n",
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"\n",
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" val0 = Objective(nextX0, price)\n",
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" val1 = Objective(nextX1, price)\n",
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" break\n",
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" end\n",
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" end\n",
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"\n",
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"\n",
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" push!(listvars,var) #stocker l'identite de la variable choisie pour la séparation\n",
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" push!(listvals,1.0) #stocker la branche choisie, identifiee par la valeur de la variable choisie\n",
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" push!(listvars, nextX0)\n",
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" push!(listvars, nextX1)\n",
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" push!(listvals, val0)\n",
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" push!(listvals, val1)\n",
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" listvars, listvals\n",
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"end\n",
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"\n",
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"\n",
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"function ExplorerAutreNoeud_relaxlin(listvars, listvals, listnodes)\n",
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" #this node is sondable, go back to parent node then right child if possible\n",
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"function ExplorerAutreNoeud_relaxlin(listvars, listvals)\n",
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" # this node is sondable, go back to parent node then right child if possible\n",
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" \n",
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" stop=false\n",
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" #check if we are not at the root node\n",
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" if (length(listvars)>= 1)\n",
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" #go back to parent node\n",
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" var=pop!(listvars)\n",
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" theval=pop!(listvals)\n",
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" tmp=pop!(listnodes)\n",
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" set_lower_bound(var,0.0)\n",
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" set_upper_bound(var,1.0)\n",
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"\n",
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" #go to right child if possible, otherwise go back to parent\n",
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" while ( (theval==0.0) && (length(listvars)>= 1))\n",
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" var=pop!(listvars)\n",
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" theval=pop!(listvals)\n",
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" tmp=pop!(listnodes)\n",
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" set_lower_bound(var,0.0) \n",
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" set_upper_bound(var,1.0)\n",
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" end\n",
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" if theval==1.0\n",
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" set_lower_bound(var,0.0)\n",
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" set_upper_bound(var,0.0)\n",
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" push!(listvars,var)\n",
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" push!(listvals,0.0)\n",
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" else\n",
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" println(\"\\nFINISHED\")\n",
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" stop=true\n",
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" end\n",
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" stop = false\n",
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" # check if we are not at the root node\n",
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" if (length(listvars) > 1)\n",
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" # go back to parent node\n",
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" var = pop!(listvars)\n",
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" val = pop!(listvals)\n",
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" else\n",
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" #the root node was sondable\n",
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" # the root node was sondable\n",
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" println(\"\\nFINISHED\")\n",
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" stop=true\n",
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" stop = true\n",
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" end\n",
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" listvars, listvals, listnodes, stop \n",
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" listvars, listvals, stop \n",
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"end"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 10,
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"execution_count": 6,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"Constraints (generic function with 1 method)"
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"true"
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]
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},
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"execution_count": 10,
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"execution_count": 6,
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"metadata": {},
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"output_type": "execute_result"
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}
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@ -270,6 +268,166 @@
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" end\n",
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" return true"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 7,
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"metadata": {},
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"outputs": [
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{
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"\n",
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"Node number 0: \n",
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"-----\n",
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"\n",
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"\n",
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"Noeud actuel\tx_1 = -1\tx_2 = -1\tx_3 = -1\tx_4 = -1 \n",
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"\n",
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"Previous Solution memorized Any[] with bestprofit -1\n",
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"\n",
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"non sondable\n",
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"\n",
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"Node number 1: \n",
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"-----\n",
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"\n",
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"\n",
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"Noeud actuel\tx_1 = 1\tx_2 = -1\tx_3 = -1\tx_4 = -1 \n",
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"\n",
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"Previous Solution memorized Any[] with bestprofit -1\n",
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"\n",
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"non sondable\n",
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"\n",
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"Node number 2: \n",
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"-----\n",
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"\n",
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"\n",
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"Noeud actuel : NOT AVAILABLE (probably infeasible or ressources limit reached) \n",
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"\n",
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"Previous Solution memorized Any[] with bestprofit -1\n",
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"\n",
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"TA\n",
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"\n",
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"Node number 3: \n",
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"-----\n",
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"\n",
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"\n",
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"Noeud actuel : NOT AVAILABLE (probably infeasible or ressources limit reached) \n",
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"\n",
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"Previous Solution memorized Any[] with bestprofit -1\n",
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"\n",
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"TA\n",
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"\n",
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"Node number 4: \n",
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"-----\n",
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"\n",
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"\n",
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"Noeud actuel : NOT AVAILABLE (probably infeasible or ressources limit reached) \n",
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"\n",
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"Previous Solution memorized Any[] with bestprofit -1\n",
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"\n",
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"TA\n",
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"\n",
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"Node number 5: \n",
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"-----\n",
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"\n",
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"\n",
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"Noeud actuel : NOT AVAILABLE (probably infeasible or ressources limit reached) \n",
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"\n",
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"Previous Solution memorized Any[] with bestprofit -1\n",
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"\n",
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"TA\n",
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"\n",
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"Node number 6: \n",
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"-----\n",
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"\n",
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"\n",
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"Noeud actuel : NOT AVAILABLE (probably infeasible or ressources limit reached) \n",
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"\n",
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"Previous Solution memorized Any[] with bestprofit -1\n",
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"\n",
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"TA\n",
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"\n",
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"FINISHED\n",
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"\n",
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"******\n",
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"\n",
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"Optimal value = -1\n",
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"\n",
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"Optimal x=Any[]\n"
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]
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},
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{
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"data": {
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"text/plain": [
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"(-1, Any[], Int64[], Int64[], Any[])"
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]
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},
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"execution_count": 7,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"function SolveKnapInstance(filename)\n",
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"\n",
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" price, weight, capacity = readKnapInstance(filename)\n",
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"\n",
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" #create the structure to memorize the search tree for visualization at the end\n",
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" trParentnodes=Int64[] #will store orig node of arc in search tree\n",
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" trChildnodes=Int64[] #will store destination node of arc in search tree\n",
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" trNamenodes=[] #will store names of nodes in search tree\n",
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" \n",
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" #intermediate structure to navigate in the search tree\n",
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" listvars=[]\n",
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" listvals=[]\n",
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"\n",
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" BestProfit=-1\n",
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" Bestsol=[]\n",
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"\n",
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" current_node_number=0\n",
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" stop = false\n",
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"\n",
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" push!(listvars, [-1 for p in price])\n",
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" push!(listvals, Objective(first(listvars), price))\n",
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"\n",
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" while (!stop)\n",
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"\n",
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" println(\"\\nNode number \", current_node_number, \": \\n-----\\n\")\n",
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"\n",
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" x = first(listvars)\n",
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"\n",
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" print(\"\\nNoeud actuel\"); \n",
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" if (!Constraints(x, weight, capacity)) # (has_values(model2))\n",
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" print(\" : NOT AVAILABLE (probably infeasible or ressources limit reached)\")\n",
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" else\n",
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" [print(\"\\tx_\", i, \" = \", x[i]) for i in 1:length(x)] \n",
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" end\n",
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" println(\" \");\n",
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" println(\"\\nPrevious Solution memorized \", Bestsol, \" with bestprofit \", BestProfit, \"\\n\")\n",
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"\n",
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" TA, TO, TR, Bestsol, BestProfit = TestsSondabilite_relaxlin(x, price, weight, capacity, BestProfit, Bestsol)\n",
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" \n",
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" is_node_sondable = TA || TO || TR\n",
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"\n",
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" if (!is_node_sondable)\n",
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" listvars, listvals = SeparerNoeud_relaxlin(price, listvars, listvals)\n",
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" else\n",
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" listvars, listvals, stop = ExplorerAutreNoeud_relaxlin(listvars, listvals)\n",
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" end\n",
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"\n",
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" current_node_number += 1\n",
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" end\n",
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"\n",
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" println(\"\\n******\\n\\nOptimal value = \", BestProfit, \"\\n\\nOptimal x=\", Bestsol)\n",
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"\n",
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" return BestProfit, Bestsol, trParentnodes, trChildnodes, trNamenodes\n",
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"\n",
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"end\n",
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"\n",
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"SolveKnapInstance(\"data/test.opb\")"
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]
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}
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],
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"metadata": {
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@ -282,7 +440,7 @@
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"file_extension": ".jl",
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"mimetype": "application/julia",
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"name": "julia",
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"version": "1.6.3"
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"version": "1.6.4"
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}
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},
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"nbformat": 4,
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