Merge branch 'master' of https://github.com/apachecn/MachineLearning

src/python/12.FrequentPattemTree/apriori.py

@@ -0,0 +1,12 @@
+def loadDataSet():
+    return [[1,3,4],[2,3,5],[1,2,3,5],[2,5]]
+def createC1(dataSet):
+    c1=[]
+    for transaction in dataSet:
+        for item in transaction:
+            if not [item] in c1:
+                c1.append([item])
+    c1.sort()
+    return map(frozenset,c1)
+def scanD(D,ck,minSupport):
+    ssCnt = {}

src/python/12.FrequentPattemTree/fpGrowth.py

@@ -0,0 +1,19 @@
+class treeNode:
+    def __init__(self,nameValue,numOccur,parentNode):
+        self.name = nameValue
+        self.count = numOccur
+        self.nodeLink = None
+        self.parent = parentNode
+        self.children = {}
+    def inc(self,numOccur):
+        self.count += numOccur
+    def disp(self,ind=1):
+        print(' '*ind,self.name,' ',self.count)
+        for child in self.children.values():
+            child.disp(ind+1)
+
+    if __name__ == "__main__":
+        import fpGrowth
+        rootNode = fpGrowth.treeNode('pyramid',9,None)
+        rootNode.children['eye']=fpGrowth.treeNode('eye',13,None)
+        rootNode.disp()

src/python/12.FrequentPattemTree/test.py

@@ -0,0 +1,5 @@
+class Test:
+    if __name__ == "__main__":
+        fza=frozenset(['a','bc'])
+        adict={fza:1,'b':2}
+        print(adict)