public static void GrowthProb(string fileName)
{
FPTransitions transitions = LoadFromFile(fileName);
FPTree fpTree = new FPTree(3);
fpTree.mMaxDepth = 1;
fpTree.GrowthProb(transitions);
fpTree.Print();
}
public static void Growth(string fileName)
{
FPTransitions transitions = LoadFromFile(fileName);
FPTree fpTree = new FPTree(3);
fpTree.mMaxDepth = 3;
List <string> tmp = new List <string>();
fpTree.Growth(transitions, tmp);
}
private static FPTransition ParseStringToTransition(FPTransitions transitions, string source)
{
List <string> arrayOfTransition = new List <string>();
string temp = source.Trim();
string[] itels = temp.Split(new string[] { " " }, StringSplitOptions.RemoveEmptyEntries);
arrayOfTransition.AddRange(itels);
FPTransition transition = ParseArrayToTransition(transitions, arrayOfTransition);
return(transition);
}
private static FPTransition ParseArrayToTransition(FPTransitions transitions, List <string> sourceArray)
{
FPTransition transition = new FPTransition();
int size = sourceArray.Count;
for (int i = 0; i < size; ++i)
{
FPItem item = ParseStringToItem(transitions, sourceArray[i]);
transition.AddItem(item, transitions.mDuplicate);
}
return(transition);
}
public static FPTransitions ParseFromArray(List <string> sources, bool duplicate)
{
FPTransitions transitions = new FPTransitions(duplicate);
int isize = sources.Count;
for (int i = 0; i < isize; ++i)
{
FPTransition transition = ParseStringToTransition(transitions, sources[i]);
transitions.AddTransition(transition);
}
return(transitions);
}
private static FPTransitions LoadFromFile(string fileName, bool duplicate = false)
{
List <string> tmp = new List <string>();
tmp.Add("1 2 3 4 5");
tmp.Add("1 3 5 10");
tmp.Add("2 4 6 12");
tmp.Add("1 4 7 13");
tmp.Add("1 4 7 13");
FPTransitions transitions = ParseFromArray(tmp, duplicate);
return(transitions);
}
private FPNodeHeadTable BuildHeaderTable(FPTransitions transitions)
{
FPNodeHeadTable table = new FPNodeHeadTable();
foreach (FPItem item in transitions.mItems.Values)
{
if (item.mSupport > mMinSupport)
{
table.AddTableNode(item.CreateNode());
}
}
table.Sort();
return(table);
}
private FPTreeNode BuildFPTree(FPTransitions transitions, FPNodeHeadTable table)
{
FPTreeNode root = new FPTreeNode("", null);
int size = transitions.Size();
for (int i = 0; i < size; ++i)
{
Queue <FPItem> record = new Queue <FPItem>();
SortByTable(transitions[i], table, ref record);
FPTreeNode subTreeRoot = root;
FPTreeNode tmpRoot = null;
while (record.Count > 0 && ((tmpRoot = subTreeRoot.FindChild(record.Peek().mName)) != null))
{
tmpRoot.Increasement(1);
subTreeRoot = tmpRoot;
record.Dequeue();
}
AddNodes(subTreeRoot, record, table);
}
return(root);
}
public void GrowthProb(FPTransitions transitions)
{
SetMinSupport(mMinSupport, transitions.Size());
FPNodeHeadTable table = BuildHeaderTable(transitions);
FPTreeNode root = BuildFPTree(transitions, table);
if (transitions.mDepth > mMaxDepth)
{
return;
}
int total = transitions.Size();
int size = table.Size();
if (size == 0)
{
return;
}
GenerateProbOne(root, table, ref total);
GenerateProbTwo(root, table, ref total);
GenerateProbThree(root, table, ref total);
}
private static FPItem ParseStringToItem(FPTransitions transitions, string source)
{
return(transitions.AddItem(source));
}
public void Growth(FPTransitions transitions, List <string> postPatterns)
{
SetMinSupport(mMinSupport, transitions.Size());
FPNodeHeadTable table = BuildHeaderTable(transitions);
if (transitions.Depth > mMaxDepth)
{
return;
}
int size = table.Size();
if (size == 0)
{
return;
}
string post = "";
if (postPatterns != null)
{
int num = postPatterns.Count;
for (int n = num - 1; n >= 0; --n)
{
post += postPatterns[n] + " ";
}
post.Trim();
}
for (int i = 0; i < size; ++i)
{
FPTreeNode child = table.mHeaderNode[i];
FPTreeNode next = child.NextNode;
FPTransitions newTransitions = null;
List <string> samples = new List <string>();
while (next != null)
{
string str = "";
FPTreeNode parent = next.mParent;
while (parent != null)
{
str += parent.mName;
str += " ";
parent = parent.mParent;
}
str.Trim();
if (str == "")
{
next = next.NextNode;
continue;
}
if (transitions.Depth <= mMaxDepth)
{
for (int j = 0; j < next.mCount; ++j)
{
samples.Add(str);
}
}
if (post == "")
{
Debug.Log(str);
}
else
{
Debug.Log(str + " : " + post);
}
next = next.NextNode;
}
if (transitions.Depth <= mMaxDepth)
{
newTransitions = FPGrowth.ParseFromArray(samples, transitions.mDuplicate);
List <string> newPostPattern = new List <string>();
int num = postPatterns.Count;
for (int n = 0; n < num; ++n)
{
newPostPattern.Add(postPatterns[n]);
}
newPostPattern.Add(child.mName);
if (newTransitions != null)
{
newTransitions.Depth = transitions.Depth + 1;
Growth(newTransitions, newPostPattern);
}
}
}
}