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Visits since 05/11/2005:
410235 
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| KEEL-dataset - data set description |
This section describes main characteristics of the Solar Flare data set and its attributes:
General information
| Solar Flare data set | |||
|---|---|---|---|
| Type | Unsupervised | Origin | Real world |
| Features | 11 | (Real / Integer / Nominal) | (0 / 0 / 11) |
| Instances | 1066 | Missing values? | No |
Attribute description
| Attribute | Domain | Attribute | Domain |
|---|---|---|---|
| LargestSpotSize | {A, R, S, X, K, H} | BecomeHist | {1, 2} |
| SpotDistribution | {X, O, I, C} | Area | {1, 2} |
| Activity | {1, 2} | C-class | {0, 1, 2, 3, 4, 5, 6, 7, 8} |
| Evolution | {1, 2, 3} | M-class | {0, 1, 2, 3, 4, 5} |
| Prev24Hour | {1, 2, 3} | X-class | {0, 1, 2} |
| HistComplex | {1, 2} |
Additional information
The database describes (using 11 attributes) certain types of solar flares occured in a 24 hour period. Each instance represents captured features for 1 active region on the sun.
Attributes description:
1. LargestSpotSize: Code for largest spot size (X,R,S,A,H,K)
2. SpotDistribution: Code for spot distribution (X,O,I,C)
3. Activity (1 = reduced, 2 = unchanged)
4. Evolution (1 = decay, 2 = no growth, 3 = growth)
5. Prev24Hour: Previous 24 hour flare activity code (1 = nothing as big as an M1, 2 = one M1, 3 = more activity than one M1)
6. HistComplex: Historically-complex (1 = Yes, 2 = No)
7. BecomeHist: Did region become historically complex on this pass across the sun's disk (1 = yes, 2 = no)
8. Area (1 = small, 2 = large)
9. C-class: flares production by this region in the following 24 hours (common flares).
10. M-class: flares production by this region in the following 24 hours (moderate flares).
11. X-class: flares production by this region in the following 24 hours (severe flares).
In this section you can download some files related to the Solar Flare data set:
- The complete data set already formatted in KEEL format can be downloaded from
here
. - The header file associated to this data set can be downloaded from here
. - This is not a native data set from the KEEL project. It has been obtained from the UCI Machine Learning Respository. The original page where the data set can be found is: https://archive.ics.uci.edu/ml/datasets/Solar+Flare.
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