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verticapy.machine_learning.vertica.decomposition.SVD.plot_circle

SVD.plot_circle(dimensions: tuple = (1, 2), chart: PlottingBase | TableSample | Axes | mFigure | Highchart | Highstock | Figure | None = None, **style_kwargs) PlottingBase | TableSample | Axes | mFigure | Highchart | Highstock | Figure

Draws a decomposition circle.

Parameters

dimensions: tuple, optional

Tuple of two elements representing the IDs of the model’s components.

chart: PlottingObject, optional

The chart object to plot on.

**style_kwargs

Any optional parameter to pass to the Plotting functions.

Returns

obj

Plotting Object.

Examples

For this example, we will use the winequality dataset.

import verticapy.datasets as vpd

data = vpd.load_winequality()
123
fixed_acidity
Numeric(8)
123
volatile_acidity
Numeric(9)
123
citric_acid
Numeric(8)
123
residual_sugar
Numeric(9)
123
chlorides
Float(22)
123
free_sulfur_dioxide
Numeric(9)
123
total_sulfur_dioxide
Numeric(9)
123
density
Float(22)
123
pH
Numeric(8)
123
sulphates
Numeric(8)
123
alcohol
Float(22)
123
quality
Integer
123
good
Integer
Abc
color
Varchar(20)
13.90.2250.44.20.0329.0118.00.9893.570.3612.881white
24.70.3350.141.30.03669.0168.00.992123.470.4610.550white
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115.00.440.0418.60.03938.0128.00.99853.370.5710.260white
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135.10.140.250.70.03915.089.00.99193.220.439.260white
145.10.1650.225.70.04742.0146.00.99343.180.559.960white
155.10.330.221.60.02718.089.00.98933.510.3812.571white
165.10.330.221.60.02718.089.00.98933.510.3812.571white
175.10.330.221.60.02718.089.00.98933.510.3812.571white
185.10.390.211.70.02715.072.00.98943.50.4512.560white
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225.20.310.22.40.02727.0117.00.988863.560.4513.071white
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275.20.480.041.60.05419.0106.00.99273.540.6212.271red
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375.30.40.253.90.03145.0130.00.990723.310.5811.7571white
385.30.470.112.20.04816.089.00.991823.540.8813.671red
395.30.470.112.20.04816.089.00.991823.540.8813.566666666666771red
405.30.7150.191.50.1617.062.00.993953.620.6111.050red
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425.40.5950.12.80.04226.080.00.99323.360.389.350white
435.40.740.091.70.08916.026.00.994023.670.5611.660red
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475.50.140.274.60.02922.0104.00.99493.340.449.050white
485.50.160.311.20.02631.068.00.98983.330.4411.6560white
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635.60.220.321.20.02429.097.00.988233.20.4613.0571white
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665.60.260.511.40.02925.093.00.994283.230.4910.560white
675.60.280.284.20.04452.0158.00.9923.350.4410.771white
685.60.30.16.40.04334.0142.00.993823.140.489.850white
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705.60.490.134.50.03917.0116.00.99073.420.913.771white
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725.60.660.02.20.0873.011.00.993783.710.6312.871red
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955.70.320.181.40.02926.0104.00.99063.440.3711.060white
965.70.320.384.750.03323.094.00.9913.420.4211.871white
975.70.360.344.20.02621.077.00.99073.410.4511.960white
985.80.140.156.10.04227.0123.00.993623.060.69.960white
995.80.150.321.20.03714.0119.00.991373.190.510.260white
1005.80.170.341.80.04596.0170.00.990353.380.911.881white
Rows: 1-100 | Columns: 14

We can drop the “color” column as it is varchar type.

data.drop("color")

Let’s import the model:

from verticapy.machine_learning.vertica import PCA

Then we can create the model:

model = PCA(
    n_components = 3,
)

And train it:

model.fit(data)


=======
columns
=======
index|        name        |  mean   |   sd   
-----+--------------------+---------+--------
  1  |   fixed_acidity    | 7.21531 | 1.29643
  2  |  volatile_acidity  | 0.33967 | 0.16464
  3  |    citric_acid     | 0.31863 | 0.14532
  4  |   residual_sugar   | 5.44324 | 4.75780
  5  |     chlorides      | 0.05603 | 0.03503
  6  |free_sulfur_dioxide |30.52532 |17.74940
  7  |total_sulfur_dioxide|115.74457|56.52185
  8  |      density       | 0.99470 | 0.00300
  9  |         ph         | 3.21850 | 0.16079
 10  |     sulphates      | 0.53127 | 0.14881
 11  |      alcohol       |10.49180 | 1.19271
 12  |      quality       | 5.81838 | 0.87326
 13  |        good        | 0.19655 | 0.39742


===============
singular_values
===============
index| value  |explained_variance|accumulated_explained_variance
-----+--------+------------------+------------------------------
  1  |58.06985|      0.95351     |            0.95351           
  2  |11.98567|      0.04062     |            0.99413           
  3  | 4.13105|      0.00483     |            0.99896           


====================
principal_components
====================
index|  PC1   |  PC2   |  PC3   
-----+--------+--------+--------
  1  |-0.00741|-0.00537| 0.02386
  2  |-0.00118|-0.00079| 0.00091
  3  | 0.00049|-0.00025| 0.00192
  4  | 0.04102| 0.01863| 0.99519
  5  |-0.00017| 0.00007| 0.00018
  6  | 0.23048| 0.97262|-0.02711
  7  | 0.97217|-0.23139|-0.03586
  8  | 0.00000| 0.00000| 0.00046
  9  |-0.00066| 0.00065|-0.00691
 10  |-0.00070| 0.00035|-0.00194
 11  |-0.00545| 0.00288|-0.08266
 12  |-0.00053| 0.00916|-0.00889
 13  |-0.00033| 0.00257|-0.00593


========
counters
========
   counter_name   |counter_value
------------------+-------------
accepted_row_count|    6497     
rejected_row_count|      0      
 iteration_count  |      1      


===========
call_string
===========
SELECT PCA('"public"."_verticapy_tmp_pca_v_mldb_b01f7e50979711efa8720242ac120002_"', '"public"."_verticapy_tmp_view_v_mldb_b04dea92979711efa8720242ac120002_"', '"fixed_acidity", "volatile_acidity", "citric_acid", "residual_sugar", "chlorides", "free_sulfur_dioxide", "total_sulfur_dioxide", "density", "pH", "sulphates", "alcohol", "quality", "good"'
USING PARAMETERS scale=false, num_components=3);

You can plot the Decomposition Circles:

model.plot_circle()

Note

Refer to PCA or SVD for a more detailed example.