scikit-mcda 0.21.11

Library for Multi-criteria Decision Aid Methods

scikit-mcda

It is a python library made to provide multi-criteria decision aid for developers and operacional researchers.

Scikit-mcda provides an easy way to apply several popular decision-making methods. It can be used as part of your development or for analytical experiments using notebooks like Jupyter, colab or kaggle. The package is available on the Pypi allowing installation by pip install scikit-mcda command.

Some methods available:

DMUU

• laplace, hurwicz, maximax, maximin, minimax-regret ...

MCDA

• Weighted Sum Model (WSM), Weighted Product Model (WPM) , Weighted Aggregated Sum Product Assessment (WASPAS), TOPSIS ...

Definition of criteria weights

• Manually, Entropy, Ranking Methods ...

Nomalization

• Z score, MinMax, Logistic, Max, Sum and RootSumSquared

Scikit-mcda is free to use for personal, commercial and academic projects, always respecting the terms of the Apache 2.0 License. Do not forget to refer to this Library when it is used in your experiments, lectures, presentations, classes and research papers. The reference must follow this citation format.

(HORTA, 2021)

HORTA, Antonio (2021). Scikit-mcda: The Python library for multi-criteria decision aid. 
Version 0.21. [opensource], 17 jan. 2021. Available in: https://gitlab.com/cybercrafter/scikit-mcda. 
Acessed in: 17 jan. 2021.

It's a project made by Cybercrafter® [e-mail]

Module for Decision-making Under Uncertainty (DMUU)

DMUU: Class Module for Decision-making Under Uncertainty

Attributes:

df_original = DataFrame
df_calc = DataFrame
decision = {"alternative":,
            "index":,
            "value": ,
            "criteria": ,
            "result": ,
            "type_dm": "DMUU",
            "hurwicz_coeficient":}

Criteria Methods:

• maximax()
• maximin()
• laplace()
• minimax_regret()
• hurwicz(coef)

Properties

• pretty_original(tablefmt='psql')
• pretty_calc(tablefmt='psql')
• pretty_decision(tablefmt='psql')

tablefmt: "psql" or "latex" or "html"

Methods:

• dataframe(alt_data, alt_labels=[], state_labels=[])
• decision_making(dmuu_criteria_list=[])

Quick Start for DMUU

from scikitmcda.dmuu import DMUU

# Defining labels for Alternatives and States")

dmuu = DMUU()

dmuu.dataframe([[5000, 2000, 100],
                [50, 50, 500]],
                ["ALT_A", "ALT_B"],
                ["STATE A", "STATE B", "STATE C"]
                )

print(dmuu.pretty_original())
+----+----------------+-----------+-----------+-----------+
|    | alternatives   |   STATE A |   STATE B |   STATE C |
|----+----------------+-----------+-----------+-----------|
|  0 | ALT_A          |      5000 |      2000 |       100 |
|  1 | ALT_B          |        50 |        50 |       500 |
+----+----------------+-----------+-----------+-----------+

# Specifying the criteria method

dmuu.minimax_regret()

print(dmuu.pretty_calc())
+----+----------------+-----------+-----------+-----------+------------------+
|    | alternatives   |   STATE A |   STATE B |   STATE C | minimax-regret   |
|----+----------------+-----------+-----------+-----------+------------------|
|  0 | ALT_A          |      5000 |      2000 |       100 | (400, 1)         |
|  1 | ALT_B          |        50 |        50 |       500 | (4950, 0)        |
+----+----------------+-----------+-----------+-----------+------------------+

print(dmuu.pretty_decision())
+---------------+---------+---------+----------------+-------------------------------+-----------+----------------------+
| alternative   |   index |   value | criteria       | result                        | type_dm   | hurwicz_coeficient   |
|---------------+---------+---------+----------------+-------------------------------+-----------+----------------------|
| ALT_A         |       0 |     400 | minimax-regret | {'ALT_A': 400, 'ALT_B': 4950} | DMUU      |                      |
+---------------+---------+---------+----------------+-------------------------------+-----------+----------------------+

# Many crietria methods

dmuu.decision_making([dmuu.maximax(), dmuu.maximin(), dmuu.hurwicz(0.8), dmuu.minimax_regret()])

print(dmuu.pretty_calc())
+----+----------------+-----------+-----------+-----------+------------------+-----------+-----------+------------------+
|    | alternatives   |   STATE A |   STATE B |   STATE C | minimax-regret   | maximax   | maximin   | hurwicz          |
|----+----------------+-----------+-----------+-----------+------------------+-----------+-----------+------------------|
|  0 | ALT_A          |      5000 |      2000 |       100 | (400, 1)         | (5000, 1) | (100, 1)  | (4020.0, 1, 0.8) |
|  1 | ALT_B          |        50 |        50 |       500 | (4950, 0)        | (500, 0)  | (50, 0)   | (410.0, 0, 0.8)  |
+----+----------------+-----------+-----------+-----------+------------------+-----------+-----------+------------------+

print(dmuu.pretty_decision())
+---------------+---------+---------+----------------+-----------------------------------+-----------+----------------------+
| alternative   |   index |   value | criteria       | result                            | type_dm   | hurwicz_coeficient   |
|---------------+---------+---------+----------------+-----------------------------------+-----------+----------------------|
| ALT_A         |       0 |    5000 | maximax        | {'ALT_A': 5000, 'ALT_B': 500}     | DMUU      |                      |
| ALT_A         |       0 |     100 | maximin        | {'ALT_A': 100, 'ALT_B': 50}       | DMUU      |                      |
| ALT_A         |       0 |    4020 | hurwicz        | {'ALT_A': 4020.0, 'ALT_B': 410.0} | DMUU      | 0.8                  |
| ALT_A         |       0 |     400 | minimax-regret | {'ALT_A': 400, 'ALT_B': 4950}     | DMUU      |                      |
+---------------+---------+---------+----------------+-----------------------------------+-----------+----------------------+

dmuu.calc_clean()
print(dmuu.pretty_calc())
+----+----------------+-----------+-----------+-----------+
|    | alternatives   |   STATE A |   STATE B |   STATE C |
|----+----------------+-----------+-----------+-----------|
|  0 | ALT_A          |      5000 |      2000 |       100 |
|  1 | ALT_B          |        50 |        50 |       500 |
+----+----------------+-----------+-----------+-----------+

Module for Multi-Criteria Decision Aid (MCDA)

MCDA: Class Module for Multi-Criteria Decision-Aid

Attributes:

• df_original
• weights
• signals
• df_normalized
• df_weighted
• df_pis
• df_nis
• df_distances
• df_decision

MCDA basis methods:

• dataframe(alt_data, alt_labels=[], state_labels=[])
• set_signals([MIN, MIN, MAX])
• set_normalization(default=RootSumSquared_)

Normalization constants: ZScore_, MinMax_, Logistic_, Max_, Sum_, RootSumSquared_

MCDA weights determination methods:

• set_weights_manually([])
• set_weights_by_entropy(normalization_method_for_entropy=Default)
• set_weights_by_ranking_A()
• set_weights_by_ranking_B()
• set_weights_by_ranking_B_POW(default=0)
• set_weights_by_ranking_C()

Ranking methods A, B, B_POW and C need criteria ordered by importance C1> c2> C3 ...

Decision-Making methods:

• topsis()
• wsm()
• wpm()
• waspas(lambda=0.5)

Properties

• pretty_original(tablefmt='psql')
• pretty_normalized(tablefmt='psql')
• pretty_weighted(tablefmt='psql')
• pretty_Xis(tablefmt='psql')
• pretty_decision(tablefmt='psql')

tablefmt: "psql" or "latex" or "html"

Quick Start for MCDA

from scikitmcda.mcda import MCDA
from scikitmcda.constants import MAX, MIN, ZScore_, MinMax_, Logistic_, Max_, Sum_, RootSumSquared_ 


mcda = MCDA()

mcda.dataframe([[90, 20, 86],
                [120, 8, 120],
                [70, 12, 90]],
                ["ALTERNATIVE A", "ALTERNATIVE B", "ALTERNATIVE C"],
                ["COST", "TIME", "SPEED"]
                )

print(mcda.pretty_original())
+----+----------------+--------+--------+---------+
|    | alternatives   |   COST |   TIME |   SPEED |
|----+----------------+--------+--------+---------|
|  0 | ALTERNATIVE A  |     90 |     20 |      86 |
|  1 | ALTERNATIVE B  |    120 |      8 |     120 |
|  2 | ALTERNATIVE C  |     70 |     12 |      90 |
+----+----------------+--------+--------+---------+

# defining weights and signals for decision by TOPSIS 
mcda.set_weights_manually([0.5, 0.3, 0.2])
# or mcda.set_weights_by_entropy()

mcda.set_signals([MIN, MIN, MAX])
mcda.set_normalization_method(RootSumSquared_)
mcda.topsis()

print(mcda.pretty_normalized())
+----+----------------+----------+----------+----------+
|    | alternatives   |     COST |     TIME |    SPEED |
|----+----------------+----------+----------+----------|
|  0 | ALTERNATIVE A  | 0.54371  | 0.811107 | 0.497384 |
|  1 | ALTERNATIVE B  | 0.724947 | 0.324443 | 0.694024 |
|  2 | ALTERNATIVE C  | 0.422885 | 0.486664 | 0.520518 |
+----+----------------+----------+----------+----------+

print(mcda.pretty_weighted())
+----+----------------+----------+-----------+-----------+
|    | alternatives   |     COST |      TIME |     SPEED |
|----+----------------+----------+-----------+-----------|
|  0 | ALTERNATIVE A  | 0.271855 | 0.243332  | 0.0994768 |
|  1 | ALTERNATIVE B  | 0.362473 | 0.0973329 | 0.138805  |
|  2 | ALTERNATIVE C  | 0.211443 | 0.145999  | 0.104104  |
+----+----------------+----------+-----------+-----------+

print(mcda.pretty_Xis())
+-----+----------+-----------+-----------+
|     |     COST |      TIME |     SPEED |
|-----+----------+-----------+-----------|
| PIS | 0.211443 | 0.0973329 | 0.138805  |
| NIS | 0.362473 | 0.243332  | 0.0994768 |
+-----+----------+-----------+-----------+

print(mcda.pretty_decision())
+----+----------------+-------------+--------+
|    | alternatives   |   euclidian |   rank |
|----+----------------+-------------+--------|
|  0 | ALTERNATIVE C  |    0.945809 |      1 |
|  1 | ALTERNATIVE B  |    0.413933 |      2 |
|  2 | ALTERNATIVE A  |    0.35164  |      3 |
+----+----------------+-------------+--------+