DEVELOPMENT... OpenML
Data
QSAR-DATASET-FOR-DRUG-TARGET-CHEMBL5303

QSAR-DATASET-FOR-DRUG-TARGET-CHEMBL5303

deactivated ARFF Publicly available Visibility: public Uploaded 15-07-2016 by unknown
0 likes downloaded by 0 people , 0 total downloads 0 issues 0 downvotes
Issue #Downvotes for this reason By


Loading wiki
Help us complete this description Edit
This dataset contains QSAR data (from ChEMBL version 17) showing activity values (unit is pseudo-pCI50) of several compounds on drug target ChEMBL_ID: CHEMBL5303 (TID: 101149), and it has 15 rows and 366 features (not including molecule IDs and class feature: molecule_id and pXC50). The features represent Molecular Descriptors which were generated from SMILES strings. Missing value imputation was applied to this dataset (By choosing the Median). Feature selection was also applied.

368 features

pXC50 (target)numeric14 unique values
0 missing
molecule_id (row identifier)nominal15 unique values
0 missing
AECCnumeric15 unique values
0 missing
AMRnumeric15 unique values
0 missing
ATS1pnumeric14 unique values
0 missing
ATS1snumeric14 unique values
0 missing
ATS1vnumeric15 unique values
0 missing
ATS2mnumeric15 unique values
0 missing
ATS2pnumeric15 unique values
0 missing
ATS2vnumeric15 unique values
0 missing
ATS3enumeric15 unique values
0 missing
ATS3inumeric15 unique values
0 missing
ATS3pnumeric15 unique values
0 missing
ATS3vnumeric15 unique values
0 missing
ATS4pnumeric15 unique values
0 missing
ATS4vnumeric15 unique values
0 missing
ATS5enumeric15 unique values
0 missing
ATS5inumeric15 unique values
0 missing
ATS5pnumeric15 unique values
0 missing
ATS5vnumeric15 unique values
0 missing
ATS6enumeric15 unique values
0 missing
ATS6inumeric15 unique values
0 missing
ATS6pnumeric15 unique values
0 missing
ATS6vnumeric15 unique values
0 missing
ATS7inumeric15 unique values
0 missing
ATS7mnumeric15 unique values
0 missing
ATS7pnumeric15 unique values
0 missing
ATS7vnumeric15 unique values
0 missing
ATS8enumeric15 unique values
0 missing
ATS8inumeric15 unique values
0 missing
ATS8mnumeric15 unique values
0 missing
ATS8pnumeric15 unique values
0 missing
ATS8snumeric15 unique values
0 missing
ATS8vnumeric15 unique values
0 missing
ATSC1pnumeric15 unique values
0 missing
ATSC2inumeric15 unique values
0 missing
ATSC2pnumeric15 unique values
0 missing
ATSC3inumeric15 unique values
0 missing
ATSC4inumeric15 unique values
0 missing
ATSC5inumeric15 unique values
0 missing
ATSC6inumeric15 unique values
0 missing
ATSC7inumeric15 unique values
0 missing
ATSC7pnumeric15 unique values
0 missing
ATSC7vnumeric15 unique values
0 missing
ATSC8inumeric15 unique values
0 missing
ATSC8pnumeric15 unique values
0 missing
ATSC8snumeric15 unique values
0 missing
BBInumeric12 unique values
0 missing
BIDnumeric14 unique values
0 missing
CATS2D_03_DAnumeric4 unique values
0 missing
CATS2D_03_DLnumeric5 unique values
0 missing
CATS2D_06_ALnumeric8 unique values
0 missing
CATS2D_07_ANnumeric4 unique values
0 missing
CATS2D_08_ALnumeric7 unique values
0 missing
CATS2D_08_LLnumeric5 unique values
0 missing
CENTnumeric15 unique values
0 missing
Chi0_AEA.bo.numeric15 unique values
0 missing
Chi0_AEA.dm.numeric15 unique values
0 missing
Chi0_AEA.ed.numeric15 unique values
0 missing
Chi0_AEA.ri.numeric15 unique values
0 missing
Chi0_EAnumeric15 unique values
0 missing
Chi0_EA.bo.numeric15 unique values
0 missing
Chi0_EA.ed.numeric15 unique values
0 missing
Chi0_EA.ri.numeric15 unique values
0 missing
Chi1_AEA.bo.numeric15 unique values
0 missing
Chi1_AEA.dm.numeric15 unique values
0 missing
Chi1_AEA.ed.numeric15 unique values
0 missing
Chi1_AEA.ri.numeric15 unique values
0 missing
Chi1_EAnumeric15 unique values
0 missing
Chi1_EA.bo.numeric15 unique values
0 missing
Chi1_EA.ed.numeric15 unique values
0 missing
Chi1_EA.ri.numeric15 unique values
0 missing
CIC0numeric15 unique values
0 missing
CIDnumeric15 unique values
0 missing
CSInumeric15 unique values
0 missing
D.Dtr04numeric15 unique values
0 missing
DECCnumeric15 unique values
0 missing
Dznumeric15 unique values
0 missing
ECCnumeric15 unique values
0 missing
Eig02_EA.ri.numeric14 unique values
0 missing
Eig03_EA.dm.numeric14 unique values
0 missing
Eig03_EA.ri.numeric15 unique values
0 missing
Eig04_AEA.dm.numeric14 unique values
0 missing
Eig04_EA.dm.numeric12 unique values
0 missing
Eig05_AEA.bo.numeric15 unique values
0 missing
Eig05_AEA.dm.numeric14 unique values
0 missing
Eig05_AEA.ri.numeric15 unique values
0 missing
Eig05_EA.bo.numeric13 unique values
0 missing
Eig05_EA.ed.numeric15 unique values
0 missing
Eig05_EA.ri.numeric15 unique values
0 missing
Eig06_AEA.bo.numeric12 unique values
0 missing
Eig06_AEA.dm.numeric14 unique values
0 missing
Eig06_AEA.ed.numeric15 unique values
0 missing
Eig06_AEA.ri.numeric14 unique values
0 missing
Eig06_EAnumeric12 unique values
0 missing
Eig06_EA.bo.numeric12 unique values
0 missing
Eig06_EA.ed.numeric14 unique values
0 missing
Eig06_EA.ri.numeric15 unique values
0 missing
Eig07_AEA.bo.numeric14 unique values
0 missing
Eig07_AEA.dm.numeric14 unique values
0 missing
Eig07_AEA.ri.numeric14 unique values
0 missing
Eig07_EAnumeric15 unique values
0 missing
Eig07_EA.bo.numeric15 unique values
0 missing
Eig07_EA.ed.numeric15 unique values
0 missing
Eig07_EA.ri.numeric13 unique values
0 missing
Eig08_AEA.bo.numeric14 unique values
0 missing
Eig08_AEA.dm.numeric15 unique values
0 missing
Eig08_AEA.ed.numeric15 unique values
0 missing
Eig08_AEA.ri.numeric14 unique values
0 missing
Eig08_EAnumeric14 unique values
0 missing
Eig08_EA.bo.numeric14 unique values
0 missing
Eig08_EA.ed.numeric15 unique values
0 missing
Eig08_EA.ri.numeric15 unique values
0 missing
Eig09_AEA.bo.numeric14 unique values
0 missing
Eig09_AEA.dm.numeric14 unique values
0 missing
Eig09_AEA.ri.numeric14 unique values
0 missing
Eig09_EAnumeric14 unique values
0 missing
Eig09_EA.bo.numeric15 unique values
0 missing
Eig09_EA.ed.numeric13 unique values
0 missing
Eig09_EA.ri.numeric14 unique values
0 missing
Eig10_AEA.bo.numeric15 unique values
0 missing
Eig10_AEA.dm.numeric15 unique values
0 missing
Eig10_AEA.ed.numeric15 unique values
0 missing
Eig10_AEA.ri.numeric15 unique values
0 missing
Eig10_EAnumeric15 unique values
0 missing
Eig10_EA.bo.numeric15 unique values
0 missing
Eig10_EA.ed.numeric15 unique values
0 missing
Eig11_AEA.bo.numeric14 unique values
0 missing
Eig11_AEA.dm.numeric14 unique values
0 missing
Eig11_AEA.ri.numeric15 unique values
0 missing
Eig11_EAnumeric15 unique values
0 missing
Eig11_EA.bo.numeric14 unique values
0 missing
Eig11_EA.ed.numeric15 unique values
0 missing
Eig11_EA.ri.numeric15 unique values
0 missing
Eig12_AEA.bo.numeric14 unique values
0 missing
Eig12_AEA.dm.numeric15 unique values
0 missing
Eig12_AEA.ed.numeric14 unique values
0 missing
Eig12_AEA.ri.numeric15 unique values
0 missing
Eig12_EAnumeric14 unique values
0 missing
Eig12_EA.bo.numeric15 unique values
0 missing
Eig12_EA.ed.numeric12 unique values
0 missing
Eig12_EA.ri.numeric14 unique values
0 missing
Eig13_AEA.bo.numeric15 unique values
0 missing
Eig13_AEA.dm.numeric14 unique values
0 missing
Eig13_AEA.ed.numeric15 unique values
0 missing
Eig13_AEA.ri.numeric14 unique values
0 missing
Eig13_EAnumeric13 unique values
0 missing
Eig13_EA.bo.numeric15 unique values
0 missing
Eig13_EA.ed.numeric15 unique values
0 missing
Eig13_EA.ri.numeric14 unique values
0 missing
Eig14_AEA.bo.numeric15 unique values
0 missing
Eig14_AEA.dm.numeric14 unique values
0 missing
Eig14_AEA.ri.numeric15 unique values
0 missing
Eig14_EA.bo.numeric15 unique values
0 missing
Eig14_EA.ed.numeric15 unique values
0 missing
Eig14_EA.ri.numeric15 unique values
0 missing
Eig15_AEA.bo.numeric14 unique values
0 missing
Eig15_AEA.dm.numeric15 unique values
0 missing
Eig15_AEA.ri.numeric14 unique values
0 missing
Eig15_EAnumeric14 unique values
0 missing
Eig15_EA.bo.numeric13 unique values
0 missing
Eig15_EA.ed.numeric13 unique values
0 missing
Eig15_EA.ri.numeric15 unique values
0 missing
Eta_alphanumeric15 unique values
0 missing
Eta_betanumeric15 unique values
0 missing
Eta_betaPnumeric12 unique values
0 missing
Eta_betaSnumeric14 unique values
0 missing
Eta_Cnumeric15 unique values
0 missing
Eta_epsinumeric15 unique values
0 missing
Eta_FLnumeric15 unique values
0 missing
Eta_Lnumeric15 unique values
0 missing
GATS8pnumeric13 unique values
0 missing
GGI10numeric12 unique values
0 missing
GGI6numeric15 unique values
0 missing
GGI7numeric15 unique values
0 missing
GGI9numeric13 unique values
0 missing
GMTInumeric15 unique values
0 missing
GMTIVnumeric15 unique values
0 missing
HDcpxnumeric15 unique values
0 missing
HVcpxnumeric15 unique values
0 missing
IACnumeric15 unique values
0 missing
ICRnumeric15 unique values
0 missing
IDDMnumeric15 unique values
0 missing
IDEnumeric15 unique values
0 missing
IDETnumeric15 unique values
0 missing
IDMnumeric15 unique values
0 missing
IDMTnumeric15 unique values
0 missing
IVDMnumeric15 unique values
0 missing
JGI7numeric6 unique values
0 missing
LPRSnumeric15 unique values
0 missing
MDDDnumeric15 unique values
0 missing
MPC01numeric15 unique values
0 missing
MPC02numeric12 unique values
0 missing
MPC09numeric15 unique values
0 missing
MPC10numeric15 unique values
0 missing
MSDnumeric15 unique values
0 missing
MWnumeric15 unique values
0 missing
MWC01numeric15 unique values
0 missing
MWC02numeric14 unique values
0 missing
MWC03numeric13 unique values
0 missing
N.072numeric4 unique values
0 missing
NaasCnumeric5 unique values
0 missing
nBOnumeric15 unique values
0 missing
nCnumeric10 unique values
0 missing
nCarnumeric8 unique values
0 missing
nCsp2numeric9 unique values
0 missing
nRCONHRnumeric2 unique values
0 missing
nSKnumeric13 unique values
0 missing
NssNHnumeric3 unique values
0 missing
ON0numeric15 unique values
0 missing
ON1numeric15 unique values
0 missing
ON1Vnumeric14 unique values
0 missing
piIDnumeric15 unique values
0 missing
piPC01numeric14 unique values
0 missing
piPC10numeric15 unique values
0 missing
Psi_e_0numeric15 unique values
0 missing
Psi_i_0numeric15 unique values
0 missing
Psi_i_1numeric15 unique values
0 missing
P_VSA_e_2numeric15 unique values
0 missing
P_VSA_i_2numeric15 unique values
0 missing
P_VSA_i_3numeric15 unique values
0 missing
P_VSA_MR_6numeric14 unique values
0 missing
P_VSA_p_3numeric15 unique values
0 missing
P_VSA_s_5numeric3 unique values
0 missing
P_VSA_v_3numeric15 unique values
0 missing
RCInumeric7 unique values
0 missing
RDCHInumeric15 unique values
0 missing
RDSQnumeric15 unique values
0 missing
RFDnumeric7 unique values
0 missing
S0Knumeric15 unique values
0 missing
S1Knumeric15 unique values
0 missing
S3Knumeric15 unique values
0 missing
SAtotnumeric15 unique values
0 missing
SCBOnumeric14 unique values
0 missing
SM02_AEA.bo.numeric14 unique values
0 missing
SM02_AEA.dm.numeric14 unique values
0 missing
SM02_AEA.ri.numeric15 unique values
0 missing
SM02_EAnumeric12 unique values
0 missing
SM03_AEA.dm.numeric14 unique values
0 missing
SM03_AEA.ri.numeric15 unique values
0 missing
SM04_AEA.dm.numeric15 unique values
0 missing
SM04_AEA.ri.numeric13 unique values
0 missing
SM05_AEA.dm.numeric15 unique values
0 missing
SM05_AEA.ri.numeric15 unique values
0 missing
SM06_AEA.dm.numeric14 unique values
0 missing
SM06_AEA.ri.numeric15 unique values
0 missing
SM07_AEA.dm.numeric13 unique values
0 missing
SM07_AEA.ri.numeric12 unique values
0 missing
SM08_AEA.ri.numeric15 unique values
0 missing
SM09_AEA.dm.numeric14 unique values
0 missing
SM09_AEA.ri.numeric15 unique values
0 missing
SM10_AEA.ri.numeric13 unique values
0 missing
SM14_AEA.bo.numeric12 unique values
0 missing
SM14_AEA.dm.numeric15 unique values
0 missing
SM15_AEA.bo.numeric15 unique values
0 missing
SM15_AEA.dm.numeric14 unique values
0 missing
SM15_AEA.ri.numeric13 unique values
0 missing
SMTInumeric15 unique values
0 missing
SMTIVnumeric15 unique values
0 missing
SNarnumeric14 unique values
0 missing
Spnumeric15 unique values
0 missing
SpAD_AEA.bo.numeric15 unique values
0 missing
SpAD_AEA.dm.numeric15 unique values
0 missing
SpAD_AEA.ed.numeric15 unique values
0 missing
SpAD_AEA.ri.numeric15 unique values
0 missing
SpAD_EAnumeric15 unique values
0 missing
SpAD_EA.bo.numeric15 unique values
0 missing
SpAD_EA.dm.numeric15 unique values
0 missing
SpAD_EA.ri.numeric15 unique values
0 missing
SPInumeric15 unique values
0 missing
SpMax2_Bh.e.numeric14 unique values
0 missing
SpMax2_Bh.m.numeric14 unique values
0 missing
SpMax2_Bh.p.numeric15 unique values
0 missing
SpMax2_Bh.v.numeric14 unique values
0 missing
SpMax3_Bh.e.numeric13 unique values
0 missing
SpMax3_Bh.i.numeric12 unique values
0 missing
SpMax3_Bh.p.numeric13 unique values
0 missing
SpMax3_Bh.v.numeric15 unique values
0 missing
SpMax4_Bh.i.numeric15 unique values
0 missing
SpMax5_Bh.e.numeric15 unique values
0 missing
SpMax5_Bh.i.numeric15 unique values
0 missing
SpMax5_Bh.m.numeric14 unique values
0 missing
SpMax5_Bh.p.numeric14 unique values
0 missing
SpMax5_Bh.v.numeric15 unique values
0 missing
SpMax7_Bh.e.numeric15 unique values
0 missing
SpMax7_Bh.m.numeric14 unique values
0 missing
SpMax7_Bh.p.numeric15 unique values
0 missing
SpMax7_Bh.v.numeric15 unique values
0 missing
SpMax8_Bh.e.numeric13 unique values
0 missing
SpMax8_Bh.m.numeric13 unique values
0 missing
SpMax8_Bh.p.numeric13 unique values
0 missing
SpMax8_Bh.v.numeric14 unique values
0 missing
SpMaxA_AEA.bo.numeric15 unique values
0 missing
SpMaxA_AEA.dm.numeric15 unique values
0 missing
SpMaxA_AEA.ed.numeric14 unique values
0 missing
SpMaxA_AEA.ri.numeric14 unique values
0 missing
SpMaxA_EAnumeric15 unique values
0 missing
SpMaxA_EA.bo.numeric15 unique values
0 missing
SpMaxA_EA.ed.numeric15 unique values
0 missing
SpMaxA_EA.ri.numeric15 unique values
0 missing
SpMin1_Bh.p.numeric12 unique values
0 missing
SpMin3_Bh.e.numeric14 unique values
0 missing
SpMin3_Bh.i.numeric12 unique values
0 missing
SpMin3_Bh.p.numeric15 unique values
0 missing
SpMin3_Bh.v.numeric14 unique values
0 missing
SpMin4_Bh.e.numeric15 unique values
0 missing
SpMin4_Bh.i.numeric15 unique values
0 missing
SpMin5_Bh.i.numeric15 unique values
0 missing
SpMin5_Bh.m.numeric14 unique values
0 missing
SpMin5_Bh.p.numeric15 unique values
0 missing
SpMin5_Bh.s.numeric11 unique values
0 missing
SpMin6_Bh.s.numeric14 unique values
0 missing
SpMin6_Bh.v.numeric14 unique values
0 missing
SpMin7_Bh.e.numeric13 unique values
0 missing
SpMin7_Bh.i.numeric13 unique values
0 missing
SpMin7_Bh.m.numeric14 unique values
0 missing
SpMin7_Bh.s.numeric12 unique values
0 missing
SpMin7_Bh.v.numeric15 unique values
0 missing
SpMin8_Bh.e.numeric14 unique values
0 missing
SpMin8_Bh.i.numeric15 unique values
0 missing
SpMin8_Bh.m.numeric15 unique values
0 missing
SpMin8_Bh.p.numeric14 unique values
0 missing
SpMin8_Bh.v.numeric15 unique values
0 missing
SRW02numeric15 unique values
0 missing
SRW04numeric14 unique values
0 missing
Svnumeric15 unique values
0 missing
TIC0numeric15 unique values
0 missing
TIC1numeric15 unique values
0 missing
TIC3numeric15 unique values
0 missing
TIC4numeric15 unique values
0 missing
TIC5numeric15 unique values
0 missing
TIEnumeric15 unique values
0 missing
TPCnumeric15 unique values
0 missing
Uindexnumeric15 unique values
0 missing
UNIPnumeric15 unique values
0 missing
VARnumeric15 unique values
0 missing
Vindexnumeric14 unique values
0 missing
VvdwMGnumeric15 unique values
0 missing
VvdwZAZnumeric15 unique values
0 missing
Vxnumeric15 unique values
0 missing
Wapnumeric15 unique values
0 missing
X0numeric15 unique values
0 missing
X0solnumeric15 unique values
0 missing
X0vnumeric15 unique values
0 missing
X1numeric15 unique values
0 missing
X1Kupnumeric15 unique values
0 missing
X1Madnumeric15 unique values
0 missing
X1MulPernumeric15 unique values
0 missing
X1Pernumeric15 unique values
0 missing
X1solnumeric15 unique values
0 missing
X1vnumeric15 unique values
0 missing
X2numeric15 unique values
0 missing
X2solnumeric15 unique values
0 missing
X3Anumeric13 unique values
0 missing
X4numeric15 unique values
0 missing
X4solnumeric15 unique values
0 missing
Xindexnumeric13 unique values
0 missing
XMODnumeric15 unique values
0 missing
Xtnumeric14 unique values
0 missing
Xunumeric15 unique values
0 missing
ZM1numeric14 unique values
0 missing
ZM2numeric13 unique values
0 missing
GATS8inumeric15 unique values
0 missing
GNarnumeric15 unique values
0 missing
HNarnumeric15 unique values
0 missing
MLOGP2numeric14 unique values
0 missing
SpMAD_AEA.ed.numeric14 unique values
0 missing
X0Anumeric12 unique values
0 missing

62 properties

15
Number of instances (rows) of the dataset.
368
Number of attributes (columns) of the dataset.
0
Number of distinct values of the target attribute (if it is nominal).
0
Number of missing values in the dataset.
0
Number of instances with at least one value missing.
367
Number of numeric attributes.
1
Number of nominal attributes.
First quartile of mutual information between the nominal attributes and the target attribute.
0
Percentage of binary attributes.
0
Percentage of instances having missing values.
0
Percentage of missing values.
99.73
Percentage of numeric attributes.
0.27
Percentage of nominal attributes.
First quartile of entropy among attributes.
0.07
First quartile of kurtosis among attributes of the numeric type.
1.37
First quartile of means among attributes of the numeric type.
Standard deviation of the number of distinct values among attributes of the nominal type.
-1.19
First quartile of skewness among attributes of the numeric type.
0.35
First quartile of standard deviation of attributes of the numeric type.
Second quartile (Median) of entropy among attributes.
0.6
Second quartile (Median) of kurtosis among attributes of the numeric type.
3.51
Second quartile (Median) of means among attributes of the numeric type.
Second quartile (Median) of mutual information between the nominal attributes and the target attribute.
-0.51
Second quartile (Median) of skewness among attributes of the numeric type.
0.87
Second quartile (Median) of standard deviation of attributes of the numeric type.
Third quartile of entropy among attributes.
2.22
Third quartile of kurtosis among attributes of the numeric type.
12.5
Third quartile of means among attributes of the numeric type.
Third quartile of mutual information between the nominal attributes and the target attribute.
0.17
Third quartile of skewness among attributes of the numeric type.
3.67
Third quartile of standard deviation of attributes of the numeric type.
-0.16
Average class difference between consecutive instances.
371.08
Mean of means among attributes of the numeric type.
Entropy of the target attribute values.
24.53
Number of attributes divided by the number of instances.
Number of attributes needed to optimally describe the class (under the assumption of independence among attributes). Equals ClassEntropy divided by MeanMutualInformation.
Percentage of instances belonging to the most frequent class.
Number of instances belonging to the most frequent class.
Maximum entropy among attributes.
11.36
Maximum kurtosis among attributes of the numeric type.
41430.07
Maximum of means among attributes of the numeric type.
Maximum mutual information between the nominal attributes and the target attribute.
The maximum number of distinct values among attributes of the nominal type.
2.09
Maximum skewness among attributes of the numeric type.
30263.81
Maximum standard deviation of attributes of the numeric type.
Average entropy of the attributes.
1.32
Mean kurtosis among attributes of the numeric type.
0
Number of binary attributes.
Average mutual information between the nominal attributes and the target attribute.
An estimate of the amount of irrelevant information in the attributes regarding the class. Equals (MeanAttributeEntropy - MeanMutualInformation) divided by MeanMutualInformation.
Average number of distinct values among the attributes of the nominal type.
-0.52
Mean skewness among attributes of the numeric type.
276.01
Mean standard deviation of attributes of the numeric type.
Minimal entropy among attributes.
-1.32
Minimum kurtosis among attributes of the numeric type.
-1.06
Minimum of means among attributes of the numeric type.
Minimal mutual information between the nominal attributes and the target attribute.
The minimal number of distinct values among attributes of the nominal type.
-3.2
Minimum skewness among attributes of the numeric type.
0
Minimum standard deviation of attributes of the numeric type.
Percentage of instances belonging to the least frequent class.
Number of instances belonging to the least frequent class.

12 tasks

2 runs - estimation_procedure: Custom 10-fold Crossvalidation - target_feature: pXC50
0 runs - estimation_procedure: 50 times Clustering
0 runs - estimation_procedure: 50 times Clustering
0 runs - estimation_procedure: 50 times Clustering
0 runs - estimation_procedure: 50 times Clustering
0 runs - estimation_procedure: 50 times Clustering
0 runs - estimation_procedure: 50 times Clustering
0 runs - estimation_procedure: 50 times Clustering
0 runs - estimation_procedure: 50 times Clustering
0 runs - estimation_procedure: 50 times Clustering
0 runs - estimation_procedure: 50 times Clustering
Define a new task