add specification

Author: Cheng-Lin-Li

DecisionTree/README.md

@@ -21,6 +21,10 @@ Assume that you have kept a record of your previous night-outs with the followin
 
 	• Whether you enjoyed {Yes, No}
 
+## Technical Specification and Report
+
+Click **[Here](https://github.com/Cheng-Lin-Li/MachineLearning/blob/master/DecisionTree/TechnicalSpecification-%5BDecisionTree%5D-%5B1.1%5D-%5B20160929%5D.pdf)** to read the detail specification and report.
+
 #### Usage: python DecisionTree.py dt-data.txt	
 
 #### Input: A data file (dt-data.txt) that contains the relevant records.

PCA/README.md

@@ -6,6 +6,9 @@ Use PCA to reduce the dimensionality of the data points in pca-data.txt from 3D
 
 Program will output the directions of the first two principal components.
 
+## Technical Specification and Report
+
+Click **[Here](https://github.com/Cheng-Lin-Li/MachineLearning/blob/master/PCA/INF552-TechnicalSpecification-PCA_FastMap-%5B1.0%5D-%5B20161011%5D.pdf])** to read the detail specification and report.
 
 #### Usage: python PCA.py
 
@@ -16,10 +19,6 @@ The file name and target dimensions were coded at main section in program but yo
 
 #### Output: Sorted K eigenvector and the results that reduces to k dimensions
 
-## Technical Specification and Report
-
-Click **[Here](https://github.com/Cheng-Lin-Li/MachineLearning/tree/master/PCA/INF552-TechnicalSpecification-PCA_FastMap-[1.0]-[20161011].pdf])** to read the detail specification and report.
-
 ## Data Structure
   1.	All data points store in an array.