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*************** More about the Water Data *******************
1. Title: Faults in a urban waste water treatment plant
2. Source Information:
-- Creators: Manel Poch (igte2@cc.uab.es)
Unitat d'Enginyeria Quimica
Universitat Autonoma de Barcelona. Bellaterra. Barcelona; Spain
-- Donor: Javier Bejar and Ulises Cortes (bejar@lsi.upc.es)
Dept. Llenguatges i Sistemes Informatics;
Universitat Politecnica de Catalunya. Barcelona; Spain
-- Date: June, 1993
3. Past Usage:
1. J. De Gracia.
``Avaluacio de tecniques de classificacio per a la gestio de
Bioprocessos: Aplicacio a un reactor de fangs activats''
Master Thesis. Dept. de Quimica. Unitat d'Enginyeria Quimica.
Universitat Autonoma de Barcelona. Bellaterra (Barcelona). 1993.
-- Results:
Comparison between the classification of plant situations using
cluster analysis and conceptual clustering. The induced classes
are exposed and contrasted.
2. J. Bejar, U. Cort\'es and M. Poch.
``LINNEO+: A Classification Methodology for Ill-structured Domains''.
Research report RT-93-10-R. Dept. Llenguatges i Sistemes Informatics.
Barcelona. 1993.
-- Results:
The conceptual clustering algorithm used in the first reference
is exposed. Some results are given about the use of a priori
expert knowledge to bias the classification process in the plant
domain.
3. Ll. Belanche, U. Cortes and M. S\`anchez.
``A knowledge-based system for the diagnosis of waste-water treatment
plant''. Proceedings of the 5th international conference of industrial
and engineering applications of AI and Expert Systems IEA/AIE-92. Ed
Springer-Verlag. Paderborn, Germany, June 92.
-- Results:
Explanation of the waste water treatment plant diagnosis problems
Not directly related to the dataset.
4. Relevant Information:
This dataset comes from the daily measures of sensors in a urban waste
water treatment plant. The objective is to classify the operational
state of the plant in order to predict faults through the state
variables of the plant at each of the stages of the treatment process.
This domain has been stated as an ill-structured domain.
5. Number of instances: 527
6. Number of Attributes: 38
There are some missing values, all are unknown information.
7. Attribute Information:
All atrributes are numeric and continuous
N. Attrib.
1 Q-E (input flow to plant)
2 ZN-E (input Zinc to plant)
3 PH-E (input pH to plant)
4 DBO-E (input Biological demand of oxygen to plant)
5 DQO-E (input chemical demand of oxygen to plant)
6 SS-E (input suspended solids to plant)
7 SSV-E (input volatile supended solids to plant)
8 SED-E (input sediments to plant)
9 COND-E (input conductivity to plant)
10 PH-P (input pH to primary settler)
11 DBO-P (input Biological demand of oxygen to primary settler)
12 SS-P (input suspended solids to primary settler)
13 SSV-P (input volatile supended solids to primary settler)
14 SED-P (input sediments to primary settler)
15 COND-P (input conductivity to primary settler)
16 PH-D (input pH to secondary settler)
17 DBO-D (input Biological demand of oxygen to secondary settler)
18 DQO-D (input chemical demand of oxygen to secondary settler)
19 SS-D (input suspended solids to secondary settler)
20 SSV-D (input volatile supended solids to secondary settler)
21 SED-D (input sediments to secondary settler)
22 COND-D (input conductivity to secondary settler)
23 PH-S (output pH)
24 DBO-S (output Biological demand of oxygen)
25 DQO-S (output chemical demand of oxygen)
26 SS-S (output suspended solids)
27 SSV-S (output volatile supended solids)
28 SED-S (output sediments)
29 COND-S (output conductivity)
30 RD-DBO-P (performance input Biological demand of oxygen in primary settler)
31 RD-SS-P (performance input suspended solids to primary settler)
32 RD-SED-P (performance input sediments to primary settler)
33 RD-DBO-S (performance input Biological demand of oxygen to secondary settler)
34 RD-DQO-S (performance input chemical demand of oxygen to secondary settler)
35 RD-DBO-G (global performance input Biological demand of oxygen)
36 RD-DQO-G (global performance input chemical demand of oxygen)
37 RD-SS-G (global performance input suspended solids)
38 RD-SED-G (global performance input sediments)
-- Statistics:
N. Attrib. min max mean st-dev
1 Q-E 10000 60081 37226.56 6571.46
2 ZN-E 0.1 33.5 2.36 2.74
3 PH-E 6.9 8.7 7.81 0.24
4 DBO-E 31 438 188.71 60.69
5 DQO-E 81 941 406.89 119.67
6 SS-E 98 2008 227.44 135.81
7 SSV-E 13.2 85.0 61.39 12.28
8 SED-E 0.4 36 4.59 2.67
9 COND-E 651 3230 1478.62 394.89
10 PH-P 7.3 8.5 7.83 0.22
11 DBO-P 32 517 206.20 71.92
12 SS-P 104 1692 253.95 147.45
13 SSV-P 7.1 93.5 60.37 12.26
14 SED-P 1.0 46.0 5.03 3.27
15 COND-P 646 3170 1496.03 402.58
16 PH-D 7.1 8.4 7.81 0.19
17 DBO-D 26 285 122.34 36.02
18 DQO-D 80 511 274.04 73.48
19 SS-D 49 244 94.22 23.94
20 SSV-D 20.2 100 72.96 10.34
21 SED-D 0.0 3.5 0.41 0.37
22 COND-D 85 3690 1490.56 399.99
23 PH-S 7.0 9.7 7.70 0.18
24 DBO-S 3 320 19.98 17.20
25 DQO-S 9 350 87.29 38.35
26 SS-S 6 238 22.23 16.25
27 SSV-S 29.2 100 80.15 9.00
28 SED-S 0.0 3.5 0.03 0.19
29 COND-S 683 3950 1494.81 387.53
30 RD-DBO-P 0.6 79.1 39.08 13.89
31 RD-SS-P 5.3 96.1 58.51 12.75
32 RD-SED-P 7.7 100 90.55 8.71
33 RD-DBO-S 8.2 94.7 83.44 8.4
34 RD-DQO-S 1.4 96.8 67.67 11.61
35 RD-DBO-G 19.6 97 89.01 6.78
36 RD-DQO-G 19.2 98.1 77.85 8.67
37 RD-SS-G 10.3 99.4 88.96 8.15
38 RD-SED-G 36.4 100 99.08 4.32
8. Missing Attribute Values:
N. Attrib. N. of Missings
1 Q-E: 18
2 ZN-E: 3
3 PH-E: 0
4 DBO-E: 23
5 DQO-E: 6
6 SS-E: 1
7 SSV-E: 11
8 SED-E: 25
9 COND-E: 0
10 PH-P: 0
11 DBO-P: 40
12 SS-P: 0
13 SSV-P: 11
14 SED-P: 24
15 COND-P: 0
16 PH-D: 0
17 DBO-D: 28
18 DQO-D: 9
19 SS-D: 2
20 SSV-D: 13
21 SED-D: 25
22 COND-D: 0
23 PH-S: 1
24 DBO-S: 23
25 DQO-S: 18
26 SS-S: 5
27 SSV-S: 17
28 SED-S: 28
29 COND-S: 1
30 RD-DBO-P: 62
31 RD-SS-P: 4
32 RD-SED-P: 27
33 RD-DBO-S: 40
34 RD-DQO-S: 26
35 RD-DBO-G: 36
36 RD-DQO-G: 25
37 RD-SS-G: 8
38 RD-SSED-G: 31
9. Class Distribution
These are the classes induced by out conceptual clustering algorithm:
-- Class 1: Normal situation
- Objects (275 days):
D-1/3/90 to D-12/3/90, D-16/3/90 to D-30/3/90, D-1/2/90 to D-19/2/90, D-21/2/90 to D-28/2/90,
D-1/1/90 to D-26/1/90, D-29/1/90 to D-31/1/90, D-1/6/90 to D-4/6/90, D-6/6/90 to D-8/6/90,
D-24/6/90, D-25/6/90, D-28/6/90, D-29/6/90, D-1/5/90 to D-6/5/90, D-8/5/90 to D-20/5/90,
D-24/5/90, D-25/5/90, D-29/5/90, D-1/4/90, D-4/4/90 to D-8/4/90, D-10/4/90 to D-20/4/90,
D-27/4/90, D-2/7/90, D-4/7/90 to D-8/7/90, D-12/7/90 to D-15/7/90, D-19/7/90, D-23/7/90,
D-26/7/90, D-4/9/90, D-5/9/90, D-23/9/90, D-28/9/90, D-30/9/90, D-17/8/90, D-21/8/90 to D-25/8/90,
D-29/8/90, D-30/8/90, D-3/12/90, D-9/12/90, D-16/12/90 to D-20/12/90, D-23/12/90, D-24/12/90,
D-27/12/90 to D-30/12/90, D-6/11/90 to D-8/11/90, D-14/11/90, D-16/11/90, D-18/11/90,
D-20/11/90, D-21/11/90, D-27/11/90, D-10/10/90, D-18/10/90, D-29/10/90, D-30/10/90,
D-3/3/91 to D-6/3/91, D-10/3/91 to D-12/3/91, D-18/3/91, D-20/3/91, D-27/3/91, D-29/3/91,
D-3/2/91, D-5/2/91, D-8/2/91, D-14/2/91, D-17/2/91, D-18/2/91, D-21/2/91 to D-24/2/91,
D-1/1/91, D-2/1/91, D-6/1/91, D-8/1/91, D-10/1/91 to D-20/1/91, D-25/1/91, D-2/5/91, D-3/5/91,
D-7/5/91, D-14/5/91, D-15/5/91, D-17/5/91, D-19/5/91, D-21/5/91 to D-23/5/91, D-1/4/91 to D-3/4/91,
D-5/4/91 to D-12/4/91, D-15/4/91 to D-21/4/91, D-23/4/91, D-1/7/91, D-3/7/91, D-4/7/91, D-7/7/91,
D-10/7/91 to D-12/7/91, D-15/7/91, D-16/7/91, D-22/7/91 to D-25/7/91, D-28/7/91, D-30/7/91, D-31/7/91,
D-2/6/91 to D-4/6/91, D-6/6/91, D-7/6/91, D-13/6/91, D-16/6/91 to D-21/6/91, D-25/6/91 to D-30/6/91,
D-4/10/91, D-6/10/91, D-17/10/91 to D-30/10/91, D-1/8/91, D-2/8/91, D-27/8/91, D-29/8/91.
-- Class 2: Secondary settler problems-1
- Objects (1 day): D-13/3/90
-- Class 3: Secondary settler problems-2
- Objects (1 day): D-14/3/90
-- Class 4: Secondary settler problems-3
- Objects (1 day): D-15/3/90, D-17/7/91 to D-19/7/91
-- Class 5: Normal situation with performance over the mean
- Objects (116 days):
D-28/1/90, D-10/6/90 to D-22/6/90, D-26/6/90, D-27/6/90, D-7/5/90, D-21/5/90 to D-23/5/90,
D-27/5/90, D-28/5/90, D-30/5/90, D-2/4/90, D-3/4/90, D-9/4/90, D-22/4/90 to D-26/4/90, D-1/7/90,
D-3/7/90, D-9/7/90 to D-11/7/90, D-16/7/90 to D-18/7/90, D-20/7/90, D-22/7/90, D-24/7/90, D-25/7/90,
D-27/7/90 to D-31/7/90, D-2/9/90, D-3/9/90, D-6/9/90 to D-13/9/90, D-16/9/90 to D-21/9/90,
D-24/9/90 to D-27/9/90, D-1/8/90 to D-7/8/90, D-16/8/90, D-28/8/90, D-31/8/90, D-7/12/90,
D-2/11/90, D-5/11/90, D-9/11/90, D-12/11/90, D-13/11/90, D-1/10/90 to D-5/10/90, D-24/10/90,
D-25/10/90, D-1/3/91, D-8/3/91, D-17/3/91, D-26/3/91, D-31/3/91, D-9/1/91, D-10/5/91, D-16/5/91,
D-20/5/91, D-29/5/91, D-30/5/91, D-14/4/91, D-22/4/91, D-24/4/91, D-25/4/91, D-5/7/91, D-8/7/91,
D-9/7/91, D-21/7/91, D-26/7/91, D-5/6/91, D-10/6/91, D-12/6/91, D-14/6/91, D-2/10/91, D-8/10/91,
D-9/10/91, D-11/10/91,D-13/10/91, D-16/10/91.
-- Class 6: Solids overload-1
- Objects (3 days): D-5/6/90 D-28/5/91 D-31/5/91
-- Class 7: Secondary settler problems-4
- Objects (1 day): D-29/4/90
-- Class 8: Storm-1
- Objects (1 day): D-14/9/90
-- Class 9: Normal situation with low influent
- Objects (69 days):
D-8/8/90 to D-10/8/90, D-13/8/90, D-15/8/90, D-19/8/90, D-20/8/90, D-27/8/90, D-1/11/90,
D-4/11/90, D-11/11/90, D-19/11/90, D-7/10/90 to D-9/10/90, D-12/10/90 to D-17/10/90,
D-21/10/90, D-23/10/90, D-26/10/90, D-28/10/90, D-7/3/91, D-24/3/91, D-25/3/91,
D-1/5/91, D-5/5/91, D-8/5/91, D-9/5/91, D-12/5/91, D-13/5/91, D-26/5/91, D-27/5/91,
D-26/4/91, D-28/4/91, D-29/4/91, D-2/7/91, D-14/7/91, D-29/7/91, D-9/6/91, D-24/6/91,
D-1/10/91, D-3/10/91, D-5/10/91, D-12/10/91, D-15/10/91, D-4/8/91 D-9/8/91 to D-26/8/91,
D-28/8/91, D-30/8/91.
-- Class 10: Storm-2
- Objects (1 day): D-12/8/90
-- Class 11: Normal situation
- Objects (53 days):
D-2/12/90, D-4/12/90, D-6/12/90, D-10/12/90 to D-14/12/90 D-21/12/90, D-26/12/90,
D-15/11/90, D-22/11/90 to D-26/11/90, D-28/11/90 to D-30/11/90, D-19/10/90,
D-13/3/91 to D-15/3/91, D-19/3/91, D-21/3/91, D-22/3/91, D-1/2/91, D-4/2/91,
D-6/2/91, D-7/2/91, D-10/2/91 to D-13/2/91, D-15/2/91, D-19/2/91,
D-25/2/91 to D-28/2/91, D-3/1/91, D-4/1/91, D-7/1/91, D-21/1/91 to D-24/1/91,
D-27/1/91 to D-31/1/91, D-6/5/91, D-4/4/91.
-- Class 12: Storm-3
- Objects (1 day): D-22/10/90
-- Class 13: Solids overload-2
- Objects (1 day): D-24/5/91
-- Comments to the data file:
The first element of each line is the day of the data,
the rest are the attribute values