yokoyang / ahp Goto Github PK

AHP allow the analytic hierarchy process by a python script.

A mathematical, and coherent, translation of human choices is provided.

Supply to everyone a clear description of the process (with also the motivation), an a visual image of the result.

The script only needs Python 2 installed. Then, only execute the ahp.py file in the same directory you download the main file: python ahp.py The folders called choices_all and choices should stay in the same directory too.

To run the AHP process, each case must be saved as a text file in the "choices" directory. You can use an already prepared file as pattern. To use the prepared pattern, you need to supply the list of choices and of the criteria involved in the process, and to call the file the_name_you_want_CC.txt.

So, for instance, the file mobile_CC.txt, should contain: 

[:opz:]
opz_1       # comment
opz_2   	# comment
opz_3		# comment
[/:opz:]

[:crit:]
crit_1 		# comment
crit_2
crit_3		# comment
crit_4      # comment
[/:crit:] 

To a correct visualization, please, avoid unicode character in variables (they don't matter in comment).

About the numerical evaluations. You can translate as "A is really really more important than B" as: B A --> 8 --> because of ...

The scale may be:
2	"A is a little bit 		more 		important than B"
3	"A is 			 		more 		important than B"
6	"A is really	 		more 		important than B"
9	"A is extremely	 		more 		important than B"
1/2	"A is a little bit		less 		important than B"
1/3	"A is 			 		less 		important than B"
1/6	"A is really	 		less 		important than B"
1/9	"A is extremely	 		less 		important than B"

Example:

[:g_c:]
					B_criteria        
A_criteria		--> 		3		--> 	     
					C_criteria         
A_criteria 		--> 		5		--> 	 

In this situation, with respect to the A_criteria, C_criteria is less important than B_criteria.

The script is provided with a test file (called “ahp_test.py”) for testing.

Permit the storage in a separate file of the choices. Let's write the choices file in a xml style (not a different way parsed style).

Apache