diff --git a/data/13.PCA/testSet.txt b/input/13.PCA/testSet.txt
similarity index 100%
rename from data/13.PCA/testSet.txt
rename to input/13.PCA/testSet.txt
diff --git a/output/03.DecisionTree/tree.pdf b/output/03.DecisionTree/tree.pdf
new file mode 100644
index 00000000..d3ad800b
Binary files /dev/null and b/output/03.DecisionTree/tree.pdf differ
diff --git a/src/python/03.DecisionTree/DTSklearn.py b/src/python/03.DecisionTree/DTSklearn.py
index 1f451c61..883ad6cf 100644
--- a/src/python/03.DecisionTree/DTSklearn.py
+++ b/src/python/03.DecisionTree/DTSklearn.py
@@ -93,7 +93,7 @@ def show_pdf(clf):
     dot_data = StringIO()
     tree.export_graphviz(clf, out_file=dot_data)
     graph = pydotplus.graph_from_dot_data(dot_data.getvalue())
-    graph.write_pdf("testResult/tree.pdf")
+    graph.write_pdf("output/03.DecisionTree/tree.pdf")
 
     # from IPython.display import Image
     # Image(graph.create_png())
diff --git a/src/python/13.PCA/pca.py b/src/python/13.PCA/pca.py
index 86ee7958..5014c309 100644
--- a/src/python/13.PCA/pca.py
+++ b/src/python/13.PCA/pca.py
@@ -40,6 +40,6 @@ def replaceNanWithMean():
 
 
 if __name__ == "__main__":
-    dataMat = loadDataSet('data/13.PCA/testSet.txt')
+    dataMat = loadDataSet('input/13.PCA/testSet.txt')
     lowDmat, reconMat = pca(dataMat, 1)
     print shape(lowDmat)
diff --git a/testResult/tree.pdf b/testResult/tree.pdf
deleted file mode 100644
index 6ab09f25..00000000
Binary files a/testResult/tree.pdf and /dev/null differ