OpenML
Beijing-Multi-Site-Air-Quality

Beijing-Multi-Site-Air-Quality

active ARFF Publicly available Visibility: public Uploaded 25-05-2021 by Hage Tuin
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This data set includes hourly air pollutants data from 12nationally-controlled air-quality monitoring sites.

18 features

Nonumeric35064 unique values
0 missing
yearnumeric5 unique values
0 missing
monthnumeric12 unique values
0 missing
daynumeric31 unique values
0 missing
hournumeric24 unique values
0 missing
PM2.5numeric888 unique values
8739 missing
PM10numeric1084 unique values
6449 missing
SO2numeric691 unique values
9021 missing
NO2numeric1212 unique values
12116 missing
COnumeric132 unique values
20701 missing
O3numeric1598 unique values
13277 missing
TEMPnumeric2034 unique values
398 missing
PRESnumeric726 unique values
393 missing
DEWPnumeric645 unique values
403 missing
RAINnumeric253 unique values
390 missing
wdstring16 unique values
1822 missing
WSPMnumeric117 unique values
318 missing
stationstring12 unique values
0 missing
Show all 18 features

19 properties

NumberOfInstances
420768
Number of instances (rows) of the dataset.
NumberOfFeatures
18
Number of attributes (columns) of the dataset.
NumberOfClasses
Number of distinct values of the target attribute (if it is nominal).
NumberOfMissingValues
74027
Number of missing values in the dataset.
NumberOfInstancesWithMissingValues
38600
Number of instances with at least one value missing.
NumberOfNumericFeatures
16
Number of numeric attributes.
NumberOfSymbolicFeatures
0
Number of nominal attributes.
Dimensionality
0
Number of attributes divided by the number of instances.
PercentageOfNumericFeatures
88.89
Percentage of numeric attributes.
MajorityClassPercentage
Percentage of instances belonging to the most frequent class.
PercentageOfSymbolicFeatures
0
Percentage of nominal attributes.
MajorityClassSize
Number of instances belonging to the most frequent class.
MinorityClassPercentage
Percentage of instances belonging to the least frequent class.
MinorityClassSize
Number of instances belonging to the least frequent class.
NumberOfBinaryFeatures
0
Number of binary attributes.
PercentageOfBinaryFeatures
0
Percentage of binary attributes.
PercentageOfInstancesWithMissingValues
9.17
Percentage of instances having missing values.
AutoCorrelation
Average class difference between consecutive instances.
PercentageOfMissingValues
0.98
Percentage of missing values.
Show all 19 properties

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