1. Pobranie zbioru danych z Repozytorium

!curl -OL https://git.wmi.amu.edu.pl/s434788/ium_434788/raw/branch/master/winequality-red.csv

  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   98k    0   98k    0     0  74502      0 --:--:--  0:00:01 --:--:-- 74502

import pandas as pd
wine=pd.read_csv('winequality-red.csv')
wine

	fixed acidity	volatile acidity	citric acid	residual sugar	chlorides	free sulfur dioxide	total sulfur dioxide	density	pH	sulphates	alcohol	quality
0	7.4	0.700	0.00	1.9	0.076	11.0	34.0	0.99780	3.51	0.56	9.4	5
1	7.8	0.880	0.00	2.6	0.098	25.0	67.0	0.99680	3.20	0.68	9.8	5
2	7.8	0.760	0.04	2.3	0.092	15.0	54.0	0.99700	3.26	0.65	9.8	5
3	11.2	0.280	0.56	1.9	0.075	17.0	60.0	0.99800	3.16	0.58	9.8	6
4	7.4	0.700	0.00	1.9	0.076	11.0	34.0	0.99780	3.51	0.56	9.4	5
...	...	...	...	...	...	...	...	...	...	...	...	...
1594	6.2	0.600	0.08	2.0	0.090	32.0	44.0	0.99490	3.45	0.58	10.5	5
1595	5.9	0.550	0.10	2.2	0.062	39.0	51.0	0.99512	3.52	0.76	11.2	6
1596	6.3	0.510	0.13	2.3	0.076	29.0	40.0	0.99574	3.42	0.75	11.0	6
1597	5.9	0.645	0.12	2.0	0.075	32.0	44.0	0.99547	3.57	0.71	10.2	5
1598	6.0	0.310	0.47	3.6	0.067	18.0	42.0	0.99549	3.39	0.66	11.0	6

1599 rows × 12 columns

2. Podział na zbiory test/train przy pomocy SciKit + (poprawka z 26.03.2021 przy pomocy basha)

2.1 SciKit

Próbowałem również podzielić na podzbiory Train:Dev:Test 6:2:2 Przy pomocy basha ale uznałem, że wygodniejsze jest korzystanie z "train_test_split()". Docelowo podział będzie dokonywany na 4 zmienne X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=0.33, random_state=42), jednak chciałem zachować konwencje z przykładu, z ćwiczeń.

https://scikit-learn.org/stable/modules/generated/sklearn.model_selection.train_test_split.html

from sklearn.model_selection import train_test_split

wine_train, wine_test = train_test_split(wine, test_size=360,train_size=959, random_state=1)

wine_test["quality"].value_counts()

5    155
6    149
7     37
4     16
8      2
3      1
Name: quality, dtype: int64

wine_train["quality"].value_counts()

5    400
6    388
7    125
4     30
8     11
3      5
Name: quality, dtype: int64

2.2 Bash

!head -n 1 winequality-red.csv > header.csv
!tail -n +2 winequality-red.csv | shuf > data.shuffled

!head -n 266 data.shuffled > wine.data.test
!head -n 532 data.shuffled | tail -n 266 > wine.data.dev
!tail -n +333 data.shuffled > wine.data.train

!cat header.csv wine.data.test > test.csv
!cat header.csv wine.data.dev > dev.csv
!cat header.csv wine.data.train > train.csv

!wc -l test.csv
!wc -l dev.csv
!wc -l train.csv

267 test.csv
267 dev.csv
1268 train.csv

wine_test_bash=pd.read_csv('test.csv')
wine_dev_bash=pd.read_csv('dev.csv')
wine_train_bash=pd.read_csv('train.csv')

3. Statystyki dla zbiorów

from matplotlib import pyplot as plt
import seaborn as sns

3.1. Zbiór Train (bash)

wine_train_bash

	fixed acidity	volatile acidity	citric acid	residual sugar	chlorides	free sulfur dioxide	total sulfur dioxide	density	pH	sulphates	alcohol	quality
0	10.0	0.380	0.38	1.6	0.169	27.0	90.0	0.99914	3.15	0.65	8.5	5
1	6.7	0.460	0.24	1.7	0.077	18.0	34.0	0.99480	3.39	0.60	10.6	6
2	7.2	0.695	0.13	2.0	0.076	12.0	20.0	0.99546	3.29	0.54	10.1	5
3	12.5	0.600	0.49	4.3	0.100	5.0	14.0	1.00100	3.25	0.74	11.9	6
4	8.3	0.560	0.22	2.4	0.082	10.0	86.0	0.99830	3.37	0.62	9.5	5
...	...	...	...	...	...	...	...	...	...	...	...	...
1262	7.8	0.560	0.12	2.0	0.082	7.0	28.0	0.99700	3.37	0.50	9.4	6
1263	5.8	0.680	0.02	1.8	0.087	21.0	94.0	0.99440	3.54	0.52	10.0	5
1264	7.7	0.630	0.08	1.9	0.076	15.0	27.0	0.99670	3.32	0.54	9.5	6
1265	7.1	0.600	0.00	1.8	0.074	16.0	34.0	0.99720	3.47	0.70	9.9	6
1266	10.4	0.610	0.49	2.1	0.200	5.0	16.0	0.99940	3.16	0.63	8.4	3

1267 rows × 12 columns

wine_train_bash["quality"].value_counts()

5    550
6    498
7    157
4     39
8     15
3      8
Name: quality, dtype: int64

wine_train_bash.describe(include='all')

	fixed acidity	volatile acidity	citric acid	residual sugar	chlorides	free sulfur dioxide	total sulfur dioxide	density	pH	sulphates	alcohol	quality
count	1267.000000	1267.000000	1267.000000	1267.000000	1267.000000	1267.000000	1267.000000	1267.000000	1267.000000	1267.000000	1267.000000	1267.000000
mean	8.344199	0.525888	0.273891	2.574033	0.087419	15.889897	46.146014	0.996799	3.310016	0.655730	10.396725	5.632991
std	1.789253	0.177804	0.196141	1.453463	0.046754	10.603674	32.734818	0.001893	0.154047	0.166206	1.042353	0.806931
min	4.700000	0.120000	0.000000	0.900000	0.012000	1.000000	6.000000	0.990070	2.740000	0.370000	8.400000	3.000000
25%	7.100000	0.390000	0.090000	1.900000	0.071000	7.000000	22.000000	0.995660	3.210000	0.550000	9.500000	5.000000
50%	7.900000	0.520000	0.260000	2.200000	0.080000	13.000000	37.000000	0.996800	3.310000	0.620000	10.200000	6.000000
75%	9.300000	0.640000	0.430000	2.600000	0.090000	22.000000	62.000000	0.997870	3.400000	0.730000	11.000000	6.000000
max	15.900000	1.580000	1.000000	15.500000	0.611000	72.000000	278.000000	1.003690	4.010000	2.000000	14.900000	8.000000

Testowy Wykres (quality, volatile acidity)

fig = plt.figure(figsize = (10,6))
sns.barplot(x = 'quality', y = 'volatile acidity', data = wine_train_bash)

<matplotlib.axes._subplots.AxesSubplot at 0x7f2504f98950>

3.2. Zbiór Test (bash)

wine_test_bash

	fixed acidity	volatile acidity	citric acid	residual sugar	chlorides	free sulfur dioxide	total sulfur dioxide	density	pH	sulphates	alcohol	quality
0	7.1	0.60	0.01	2.3	0.079	24.0	37.0	0.99514	3.40	0.61	10.9	6
1	7.8	0.61	0.29	1.6	0.114	9.0	29.0	0.99740	3.26	1.56	9.1	5
2	7.1	0.63	0.06	2.0	0.083	8.0	29.0	0.99855	3.67	0.73	9.6	5
3	9.1	0.30	0.41	2.0	0.068	10.0	24.0	0.99523	3.27	0.85	11.7	7
4	9.0	0.46	0.31	2.8	0.093	19.0	98.0	0.99815	3.32	0.63	9.5	6
...	...	...	...	...	...	...	...	...	...	...	...	...
261	7.2	0.60	0.04	2.5	0.076	18.0	88.0	0.99745	3.53	0.55	9.5	5
262	8.4	0.67	0.19	2.2	0.093	11.0	75.0	0.99736	3.20	0.59	9.2	4
263	8.8	0.61	0.19	4.0	0.094	30.0	69.0	0.99787	3.22	0.50	10.0	6
264	9.6	0.68	0.24	2.2	0.087	5.0	28.0	0.99880	3.14	0.60	10.2	5
265	10.5	0.43	0.35	3.3	0.092	24.0	70.0	0.99798	3.21	0.69	10.5	6

266 rows × 12 columns

wine_test_bash["quality"].value_counts()

6    109
5    108
7     37
4      8
8      2
3      2
Name: quality, dtype: int64

wine_test_bash.describe(include='all')

	fixed acidity	volatile acidity	citric acid	residual sugar	chlorides	free sulfur dioxide	total sulfur dioxide	density	pH	sulphates	alcohol	quality
count	266.000000	266.000000	266.000000	266.000000	266.000000	266.000000	266.000000	266.000000	266.000000	266.000000	266.000000	266.000000
mean	8.245865	0.529455	0.266203	2.373308	0.086823	15.840226	47.447368	0.996499	3.313195	0.676241	10.569925	5.665414
std	1.526175	0.181583	0.191968	1.005345	0.046159	10.163096	34.610379	0.001772	0.158871	0.187786	1.149728	0.808497
min	4.600000	0.180000	0.000000	1.200000	0.039000	1.000000	7.000000	0.990840	2.880000	0.390000	9.000000	3.000000
25%	7.200000	0.392500	0.100000	1.900000	0.068000	7.000000	22.250000	0.995318	3.200000	0.560000	9.500000	5.000000
50%	8.000000	0.520000	0.260000	2.100000	0.078000	14.000000	40.000000	0.996520	3.310000	0.640000	10.250000	6.000000
75%	9.100000	0.630000	0.400000	2.500000	0.092000	21.000000	62.750000	0.997600	3.400000	0.750000	11.400000	6.000000
max	13.300000	1.330000	0.740000	8.800000	0.467000	51.000000	289.000000	1.002600	3.900000	1.980000	14.000000	8.000000

Testowy Wykres (quality, volatile acidity)

fig = plt.figure(figsize = (10,6))
sns.barplot(x = 'quality', y = 'volatile acidity', data = wine_test_bash)

<matplotlib.axes._subplots.AxesSubplot at 0x7f2504747ad0>

3.3. Cały zbiór

wine

	fixed acidity	volatile acidity	citric acid	residual sugar	chlorides	free sulfur dioxide	total sulfur dioxide	density	pH	sulphates	alcohol	quality
0	7.4	0.700	0.00	1.9	0.076	11.0	34.0	0.99780	3.51	0.56	9.4	5
1	7.8	0.880	0.00	2.6	0.098	25.0	67.0	0.99680	3.20	0.68	9.8	5
2	7.8	0.760	0.04	2.3	0.092	15.0	54.0	0.99700	3.26	0.65	9.8	5
3	11.2	0.280	0.56	1.9	0.075	17.0	60.0	0.99800	3.16	0.58	9.8	6
4	7.4	0.700	0.00	1.9	0.076	11.0	34.0	0.99780	3.51	0.56	9.4	5
...	...	...	...	...	...	...	...	...	...	...	...	...
1594	6.2	0.600	0.08	2.0	0.090	32.0	44.0	0.99490	3.45	0.58	10.5	5
1595	5.9	0.550	0.10	2.2	0.062	39.0	51.0	0.99512	3.52	0.76	11.2	6
1596	6.3	0.510	0.13	2.3	0.076	29.0	40.0	0.99574	3.42	0.75	11.0	6
1597	5.9	0.645	0.12	2.0	0.075	32.0	44.0	0.99547	3.57	0.71	10.2	5
1598	6.0	0.310	0.47	3.6	0.067	18.0	42.0	0.99549	3.39	0.66	11.0	6

1599 rows × 12 columns

wine["quality"].value_counts()

5    681
6    638
7    199
4     53
8     18
3     10
Name: quality, dtype: int64

wine.describe(include='all')

	fixed acidity	volatile acidity	citric acid	residual sugar	chlorides	free sulfur dioxide	total sulfur dioxide	density	pH	sulphates	alcohol	quality
count	1599.000000	1599.000000	1599.000000	1599.000000	1599.000000	1599.000000	1599.000000	1599.000000	1599.000000	1599.000000	1599.000000	1599.000000
mean	8.319637	0.527821	0.270976	2.538806	0.087467	15.874922	46.467792	0.996747	3.311113	0.658149	10.422983	5.636023
std	1.741096	0.179060	0.194801	1.409928	0.047065	10.460157	32.895324	0.001887	0.154386	0.169507	1.065668	0.807569
min	4.600000	0.120000	0.000000	0.900000	0.012000	1.000000	6.000000	0.990070	2.740000	0.330000	8.400000	3.000000
25%	7.100000	0.390000	0.090000	1.900000	0.070000	7.000000	22.000000	0.995600	3.210000	0.550000	9.500000	5.000000
50%	7.900000	0.520000	0.260000	2.200000	0.079000	14.000000	38.000000	0.996750	3.310000	0.620000	10.200000	6.000000
75%	9.200000	0.640000	0.420000	2.600000	0.090000	21.000000	62.000000	0.997835	3.400000	0.730000	11.100000	6.000000
max	15.900000	1.580000	1.000000	15.500000	0.611000	72.000000	289.000000	1.003690	4.010000	2.000000	14.900000	8.000000

Testowy Wykres (quality, volatile acidity)

fig = plt.figure(figsize = (10,6))
sns.barplot(x = 'quality', y = 'volatile acidity', data = wine)

<matplotlib.axes._subplots.AxesSubplot at 0x7f2504262bd0>

3.4. zbiór Dev (bash)

wine_dev_bash

	fixed acidity	volatile acidity	citric acid	residual sugar	chlorides	free sulfur dioxide	total sulfur dioxide	density	pH	sulphates	alcohol	quality
0	8.0	0.705	0.05	1.9	0.074	8.0	19.0	0.99620	3.34	0.95	10.5	6
1	7.6	0.665	0.10	1.5	0.066	27.0	55.0	0.99655	3.39	0.51	9.3	5
2	7.8	0.550	0.35	2.2	0.074	21.0	66.0	0.99740	3.25	0.56	9.2	5
3	13.0	0.320	0.65	2.6	0.093	15.0	47.0	0.99960	3.05	0.61	10.6	5
4	8.8	0.610	0.30	2.8	0.088	17.0	46.0	0.99760	3.26	0.51	9.3	4
...	...	...	...	...	...	...	...	...	...	...	...	...
261	13.8	0.490	0.67	3.0	0.093	6.0	15.0	0.99860	3.02	0.93	12.0	6
262	7.1	0.750	0.01	2.2	0.059	11.0	18.0	0.99242	3.39	0.40	12.8	6
263	9.9	0.350	0.41	2.3	0.083	11.0	61.0	0.99820	3.21	0.50	9.5	5
264	6.5	0.520	0.11	1.8	0.073	13.0	38.0	0.99550	3.34	0.52	9.3	5
265	6.8	0.670	0.00	1.9	0.080	22.0	39.0	0.99701	3.40	0.74	9.7	5

266 rows × 12 columns

wine_dev_bash["quality"].value_counts()

5    115
6    113
7     24
4      9
8      3
3      2
Name: quality, dtype: int64

wine_dev_bash.describe(include='all')

	fixed acidity	volatile acidity	citric acid	residual sugar	chlorides	free sulfur dioxide	total sulfur dioxide	density	pH	sulphates	alcohol	quality
count	266.000000	266.000000	266.000000	266.000000	266.000000	266.000000	266.000000	266.000000	266.000000	266.000000	266.000000	266.000000
mean	8.273684	0.540075	0.253008	2.523308	0.088620	15.398496	43.973684	0.996749	3.317895	0.649774	10.453321	5.590226
std	1.720592	0.193856	0.190330	1.380498	0.055825	10.002219	30.518712	0.001930	0.152003	0.176930	1.058010	0.777841
min	4.900000	0.120000	0.000000	1.300000	0.012000	1.000000	8.000000	0.990640	2.870000	0.330000	8.500000	3.000000
25%	7.100000	0.396250	0.080000	1.900000	0.068250	8.000000	20.000000	0.995525	3.210000	0.542500	9.500000	5.000000
50%	7.900000	0.520000	0.240000	2.200000	0.079000	13.000000	37.000000	0.996720	3.320000	0.620000	10.200000	6.000000
75%	9.200000	0.648750	0.390000	2.600000	0.090000	20.000000	60.000000	0.997877	3.430000	0.720000	11.200000	6.000000
max	15.600000	1.580000	0.760000	13.800000	0.611000	66.000000	141.000000	1.003150	3.720000	1.950000	14.000000	8.000000

fig = plt.figure(figsize = (10,6))
sns.barplot(x = 'quality', y = 'volatile acidity', data = wine_dev_bash)

<matplotlib.axes._subplots.AxesSubplot at 0x7f2504166f50>

4. Normalizacja

Normalizacja kolumny 'quality' na wartości od 0 do 20. Nie jest ona konieczna ale została stworzona w celach demonstracyjnych

wine["quality"]=((wine["quality"]-wine["quality"].min())/(wine["quality"].max()-wine["quality"].min()))*20

wine

	fixed acidity	volatile acidity	citric acid	residual sugar	chlorides	free sulfur dioxide	total sulfur dioxide	density	pH	sulphates	alcohol	quality
0	7.4	0.700	0.00	1.9	0.076	11.0	34.0	0.99780	3.51	0.56	9.4	8.0
1	7.8	0.880	0.00	2.6	0.098	25.0	67.0	0.99680	3.20	0.68	9.8	8.0
2	7.8	0.760	0.04	2.3	0.092	15.0	54.0	0.99700	3.26	0.65	9.8	8.0
3	11.2	0.280	0.56	1.9	0.075	17.0	60.0	0.99800	3.16	0.58	9.8	12.0
4	7.4	0.700	0.00	1.9	0.076	11.0	34.0	0.99780	3.51	0.56	9.4	8.0
...	...	...	...	...	...	...	...	...	...	...	...	...
1594	6.2	0.600	0.08	2.0	0.090	32.0	44.0	0.99490	3.45	0.58	10.5	8.0
1595	5.9	0.550	0.10	2.2	0.062	39.0	51.0	0.99512	3.52	0.76	11.2	12.0
1596	6.3	0.510	0.13	2.3	0.076	29.0	40.0	0.99574	3.42	0.75	11.0	12.0
1597	5.9	0.645	0.12	2.0	0.075	32.0	44.0	0.99547	3.57	0.71	10.2	8.0
1598	6.0	0.310	0.47	3.6	0.067	18.0	42.0	0.99549	3.39	0.66	11.0	12.0

1599 rows × 12 columns

wine["quality"].value_counts()

8.0     681
12.0    638
16.0    199
4.0      53
20.0     18
0.0      10
Name: quality, dtype: int64

5. Usuwanie artefaktów

Całe szczęscie nie ma w moim zbiorze ani pustych linijek, ani przykładów z niepoprawnymi wartościami

# Znajdźmy pustą linijkę:
! grep -P "^$" -n winequality-red.csv

Szukanie wartości "NA": https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.dropna.html

wine.isnull().sum()

fixed acidity           0
volatile acidity        0
citric acid             0
residual sugar          0
chlorides               0
free sulfur dioxide     0
total sulfur dioxide    0
density                 0
pH                      0
sulphates               0
alcohol                 0
quality                 0
dtype: int64

wine.dropna(inplace=True)

wine

	fixed acidity	volatile acidity	citric acid	residual sugar	chlorides	free sulfur dioxide	total sulfur dioxide	density	pH	sulphates	alcohol	quality
0	7.4	0.700	0.00	1.9	0.076	11.0	34.0	0.99780	3.51	0.56	9.4	8.0
1	7.8	0.880	0.00	2.6	0.098	25.0	67.0	0.99680	3.20	0.68	9.8	8.0
2	7.8	0.760	0.04	2.3	0.092	15.0	54.0	0.99700	3.26	0.65	9.8	8.0
3	11.2	0.280	0.56	1.9	0.075	17.0	60.0	0.99800	3.16	0.58	9.8	12.0
4	7.4	0.700	0.00	1.9	0.076	11.0	34.0	0.99780	3.51	0.56	9.4	8.0
...	...	...	...	...	...	...	...	...	...	...	...	...
1594	6.2	0.600	0.08	2.0	0.090	32.0	44.0	0.99490	3.45	0.58	10.5	8.0
1595	5.9	0.550	0.10	2.2	0.062	39.0	51.0	0.99512	3.52	0.76	11.2	12.0
1596	6.3	0.510	0.13	2.3	0.076	29.0	40.0	0.99574	3.42	0.75	11.0	12.0
1597	5.9	0.645	0.12	2.0	0.075	32.0	44.0	0.99547	3.57	0.71	10.2	8.0
1598	6.0	0.310	0.47	3.6	0.067	18.0	42.0	0.99549	3.39	0.66	11.0	12.0

1599 rows × 12 columns

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1. Pobranie zbioru danych z Repozytorium

2. Podział na zbiory test/train przy pomocy SciKit + (poprawka z 26.03.2021 przy pomocy basha)

2.1 SciKit

2.2 Bash

3. Statystyki dla zbiorów

3.1. Zbiór Train (bash)

3.2. Zbiór Test (bash)

3.3. Cały zbiór

3.4. zbiór Dev (bash)

4. Normalizacja

5. Usuwanie artefaktów

Całe szczęscie nie ma w moim zbiorze ani pustych linijek, ani przykładów z niepoprawnymi wartościami

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