Pre-release
This release is a pre-release and may not be stable for production use.
PyGrey
This toolkit provides implementation of Grey Relation Analysis and Grey Model Prediction.
Example
- Grey Relation Analysis (GRA)
from pygrey.gra import *
# Grey Relation Analysis (GRA)
# load data from an Excel file
gra=GRA(data_path='data/data.xlsx',use_cols=[0,1,2,3])
# run the model
gra.run(show_fig=True)
- Grey Model Prediction (GM(1,1))
from pygrey.gm import *
# Sequence
X0 = [7413.7, 7579, 7739.2, 7696, 7787.7, 7584.1, 7489, 7355, 7138]
# X axis
t = 1996
dt = 1
# Number of prediction
num_prediction = 2
# Grey model
gm=GM(x=X0,t=t,dt=dt,num_prediction=num_prediction)
# run the model
gm.run(show_figure=True)
Other GM implementation:
from pygrey.gm_v2 import *
ls = [7413.7, 7579, 7739.2, 7696, 7787.7, 7584.1, 7489, 7355, 7138]
gm = GM()
gm.fit(ls)
print("Confidennce = ",gm.confidence())
print("X0 = ",ls)
print("Prediction = ", gm.predict(m=4))
License
The pygrey project is provided by Donghua Chen.
1 maintainer
Metadata
1 maintainer
Release files for pygrey 0.0.1a1
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| pygrey-0.0.1a1.tar.gz | 14.6 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| pygrey-0.0.1a1-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 27.4 kB
Release files / pygrey-0.0.1a1.tar.gz
| Download URL | pygrey-0.0.1a1.tar.gz |
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| Size | 14.6 kB |
| Tags | Source |
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Release files / pygrey-0.0.1a1-py3-none-any.whl
| Download URL | pygrey-0.0.1a1-py3-none-any.whl |
|---|---|
| Size | 12.7 kB |
| Tags | Python 3 |
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