f5
Co-authored-by: gdamms <gdamms@users.noreply.github.com>
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notebook.ipynb
1695
notebook.ipynb
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@ -1,18 +1,3 @@
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import Pkg;
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Pkg.add("GraphRecipes");
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Pkg.add("Plots");
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using GraphRecipes, Plots #only used to visualize the search tree at the end of the branch-and-bound
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"""Open and read a KnapFile.
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Args: \\
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- filename (String): the name of the file to read.
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Returns: \\
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- price (Vector{Integer}): prices of items to put in the KnapSack. \\
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- weight (Vector{Integer}): weights of items to put in the KnapSack. \\
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- capacity (Integer): the maximum capacity of the KnapSack.
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"""
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function readKnapInstance(filename)
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price = []
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weight = []
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@ -38,24 +23,6 @@ function readKnapInstance(filename)
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return price, weight, capacity
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end
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"""Test if a node should be pruned.
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Args: \\
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- x (Vector{Integer}): the node to be tested. \\
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- price (Vector{Integer}): prices of items to put in the KnapSack. \\
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- weight (Vector{Integer}): weights of items to put in the KnapSack. \\
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- capacity (Integer): the maximum capacity of the KnapSack. \\
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- BestProfit (Integer): the current BestProfit value. \\
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- Bestsol (Integer): the current BestSol values. \\
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- affich (Bool): determine if the function should print to stdout.
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Returns: \\
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- TA (Bool): true if the node is feasible. \\
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- TO (Bool): true if the node is optimal. \\
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- TR (Bool): true if the node is resolvable. \\
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- BestProfit (Integer): the updated value of BestProfit. \\
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- Bestsol (Vector{Integer}): the updated values of BestSol.
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"""
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function TestsSondabilite_relaxlin(x, price, weight, capacity, BestProfit, Bestsol, affich)
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TA, TO, TR = false, false, false
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@ -96,17 +63,6 @@ function TestsSondabilite_relaxlin(x, price, weight, capacity, BestProfit, Bests
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return TA, TO, TR, Bestsol, BestProfit
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end
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"""Split a node in two.
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Args: \\
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- price (Vector{Integer}): prices of items to put in the KnapSack. \\
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- listvars (Vector{Vector{Integer}}): the current values of listvars. \\
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- listvals (Vector{Integer}): the current values of listvals.
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Returns: \\
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- listvars (Vector{Vector{Integer}}): the updated values of listvars. \\
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- listvals (Vector{Integer}): the updated values of listvals.
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"""
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function SeparerNoeud_relaxlin(price, listvars, listvals)
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# Le noeud est non-sondable. Appliquer le critère de séparation pour le séparer en sous-noeuds
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@ -148,18 +104,6 @@ function SeparerNoeud_relaxlin(price, listvars, listvals)
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return listvars, listvals
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end
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"""Pop node fom the list to explore another node.
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Args: \\
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- price (Vector{Integer}): prices of items to put in the KnapSack. \\
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- listvars (Vector{Vector{Integer}}): the current values of listvars. \\
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- listvals (Vector{Integer}): the current values of listvals.
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Returns: \\
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- listvars (Vector{Vector{Integer}}): the updated values of listvars. \\
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- listvals (Vector{Integer}): the updated values of listvals. \\
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- stop (Bool): true if the tree search is finished.
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"""
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function ExplorerAutreNoeud_relaxlin(listvars, listvals)
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# Le noeud est sondable, on l'enlève de la pile des noeuds à sonder
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@ -208,16 +152,6 @@ function AllDef(x)
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return true
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end
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"""Solve the KnapSack problem for the data contained in `filename`.
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Args: \\
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- filename (String): the name of the file to read.
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Returns: \\
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- trParentnodes (Vector{Integer}): the parents nodes, to plot the tree.
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- trChildnodes (Vector{Integer}): the child nodes, to plot the tree.
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- trNamenodes (Vector{Integer}): the name of the nodes, to plot the tree.
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"""
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function SolveKnapInstance(filename)
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stop = false
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end
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trParentnodes, trChildnodes, trNamenodes = SolveKnapInstance("data/circle/knapPI_16_10000_1000_5_-912198.opb")
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# graphplot(trParentnodes, trChildnodes, names = trNamenodes, method = :tree)
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