Showcase of different models and algorithms applied to same dataset.

In this example, we show how bnpy makes it easy to apply different models and algorithms to the same dataset.

```
import bnpy
import numpy as np
import os
from matplotlib import pylab
import seaborn as sns
SMALL_FIG_SIZE = (2.5, 2.5)
FIG_SIZE = (5, 5)
pylab.rcParams['figure.figsize'] = FIG_SIZE
```

Load dataset from file

```
dataset_path = os.path.join(bnpy.DATASET_PATH, 'faithful')
dataset = bnpy.data.XData.read_csv(
os.path.join(dataset_path, 'faithful.csv'))
```

Make a simple plot of the raw data

```
pylab.plot(dataset.X[:, 0], dataset.X[:, 1], 'k.')
pylab.xlabel(dataset.column_names[0])
pylab.ylabel(dataset.column_names[1])
pylab.tight_layout()
data_ax_h = pylab.gca()
```

```
def show_clusters_over_time(
task_output_path=None,
query_laps=[0, 1, 2, 10, 20, None],
nrows=2):
''' Show 2D elliptical contours overlaid on raw data.
'''
ncols = int(np.ceil(len(query_laps) // float(nrows)))
fig_handle, ax_handle_list = pylab.subplots(
figsize=(SMALL_FIG_SIZE[0] * ncols, SMALL_FIG_SIZE[1] * nrows),
nrows=nrows, ncols=ncols, sharex=True, sharey=True)
for plot_id, lap_val in enumerate(query_laps):
cur_model, lap_val = bnpy.load_model_at_lap(task_output_path, lap_val)
cur_ax_handle = ax_handle_list.flatten()[plot_id]
bnpy.viz.PlotComps.plotCompsFromHModel(
cur_model, dataset=dataset, ax_handle=cur_ax_handle)
cur_ax_handle.set_title("lap: %d" % lap_val)
cur_ax_handle.set_xlabel(dataset.column_names[0])
cur_ax_handle.set_ylabel(dataset.column_names[1])
cur_ax_handle.set_xlim(data_ax_h.get_xlim())
cur_ax_handle.set_ylim(data_ax_h.get_ylim())
pylab.tight_layout()
```

Assume diagonal covariances.

Start with too many clusters (K=20)

```
gamma = 5.0
sF = 5.0
K = 20
diag_trained_model, diag_info_dict = bnpy.run(
dataset, 'DPMixtureModel', 'DiagGauss', 'memoVB',
output_path='/tmp/faithful/showcase-K=20-lik=DiagGauss-ECovMat=5*eye/',
nLap=1000, nTask=1, nBatch=1, convergeThr=0.0001,
gamma0=gamma, sF=sF, ECovMat='eye',
K=K, initname='randexamples',
)
show_clusters_over_time(diag_info_dict['task_output_path'])
```

Out:

```
Dataset Summary:
X Data
total size: 272 units
batch size: 272 units
num. batches: 1
Allocation Model: DP mixture with K=0. Concentration gamma0= 5.00
Obs. Data Model: Gaussian with diagonal covariance.
Obs. Data Prior: independent Gauss-Wishart prior on each dimension
Wishart params
nu = 4
beta = [ 10 10]
Expectations
E[ mean[k]] =
[ 0 0]
E[ covar[k]] =
[[5. 0.]
[0. 5.]]
Initialization:
initname = randexamples
K = 20 (number of clusters)
seed = 1607680
elapsed_time: 0.0 sec
Learn Alg: memoVB | task 1/1 | alg. seed: 1607680 | data order seed: 8541952
task_output_path: /tmp/faithful/showcase-K=20-lik=DiagGauss-ECovMat=5*eye/1
1.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 3.002088161e+00 |
2.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.966309748e+00 | Ndiff 4.584
3.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.949498401e+00 | Ndiff 4.501
4.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.931792100e+00 | Ndiff 5.452
5.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.910174417e+00 | Ndiff 6.264
6.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.881973764e+00 | Ndiff 6.557
7.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.833491488e+00 | Ndiff 6.194
8.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.793876249e+00 | Ndiff 5.582
9.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.752249036e+00 | Ndiff 4.580
10.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.698456106e+00 | Ndiff 4.740
11.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.651622886e+00 | Ndiff 5.753
12.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.624108159e+00 | Ndiff 6.393
13.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.587572334e+00 | Ndiff 6.074
14.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.560219008e+00 | Ndiff 4.596
15.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.544887510e+00 | Ndiff 2.425
16.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.527562170e+00 | Ndiff 1.537
17.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.513204290e+00 | Ndiff 1.470
18.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.507574530e+00 | Ndiff 1.454
19.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.497639081e+00 | Ndiff 1.477
20.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.497002974e+00 | Ndiff 1.526
21.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.496368366e+00 | Ndiff 1.584
22.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.495732569e+00 | Ndiff 1.638
23.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.495103986e+00 | Ndiff 1.678
24.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.494497370e+00 | Ndiff 1.697
25.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.493928089e+00 | Ndiff 1.698
26.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.493406054e+00 | Ndiff 1.687
27.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.492931650e+00 | Ndiff 1.674
28.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.492495409e+00 | Ndiff 1.670
29.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.492081031e+00 | Ndiff 1.682
30.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.491669505e+00 | Ndiff 1.715
31.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.491242078e+00 | Ndiff 1.771
32.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.490781261e+00 | Ndiff 1.851
33.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.490270354e+00 | Ndiff 1.954
34.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.489692235e+00 | Ndiff 2.082
35.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.489027945e+00 | Ndiff 2.235
36.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.488255286e+00 | Ndiff 2.414
37.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.487347489e+00 | Ndiff 2.621
38.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.486272015e+00 | Ndiff 2.855
39.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.484989607e+00 | Ndiff 3.113
40.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.483453885e+00 | Ndiff 3.391
41.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.481612017e+00 | Ndiff 3.675
42.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.479407351e+00 | Ndiff 3.945
43.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.476785615e+00 | Ndiff 4.169
44.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.473707547e+00 | Ndiff 4.301
45.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.470173027e+00 | Ndiff 4.287
46.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.466261998e+00 | Ndiff 4.076
47.000/1000 after 0 sec. | 196.1 MiB | K 20 | loss 2.462175093e+00 | Ndiff 3.648
48.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.458145085e+00 | Ndiff 3.068
49.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.453753531e+00 | Ndiff 2.496
50.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.441832238e+00 | Ndiff 2.043
51.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.437414963e+00 | Ndiff 1.868
52.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.435586138e+00 | Ndiff 1.786
53.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.433555668e+00 | Ndiff 1.617
54.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.431430213e+00 | Ndiff 1.335
55.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.429483776e+00 | Ndiff 0.970
56.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.428084819e+00 | Ndiff 0.626
57.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.427098172e+00 | Ndiff 0.419
58.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.425535651e+00 | Ndiff 0.330
59.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.415976963e+00 | Ndiff 0.153
60.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412692266e+00 | Ndiff 0.026
61.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412692093e+00 | Ndiff 0.016
62.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412692005e+00 | Ndiff 0.011
63.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412691958e+00 | Ndiff 0.008
64.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412691932e+00 | Ndiff 0.006
65.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412691918e+00 | Ndiff 0.005
66.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412691910e+00 | Ndiff 0.003
67.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412691906e+00 | Ndiff 0.003
68.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412691904e+00 | Ndiff 0.002
69.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412691903e+00 | Ndiff 0.001
70.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412691902e+00 | Ndiff 0.001
71.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412691901e+00 | Ndiff 0.001
72.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412691901e+00 | Ndiff 0.001
73.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412691901e+00 | Ndiff 0.000
74.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412691901e+00 | Ndiff 0.000
75.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412691901e+00 | Ndiff 0.000
76.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412691901e+00 | Ndiff 0.000
77.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412691901e+00 | Ndiff 0.000
78.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412691901e+00 | Ndiff 0.000
79.000/1000 after 1 sec. | 196.1 MiB | K 20 | loss 2.412691901e+00 | Ndiff 0.000
... done. converged.
```

Assume full covariances.

Start with too many clusters (K=20)

```
full_trained_model, full_info_dict = bnpy.run(
dataset, 'DPMixtureModel', 'Gauss', 'VB',
output_path='/tmp/faithful/showcase-K=20-lik=Gauss-ECovMat=5*eye/',
nLap=1000, nTask=1, nBatch=1, convergeThr=0.0001,
gamma0=gamma, sF=sF, ECovMat='eye',
K=K, initname='randexamples',
)
show_clusters_over_time(full_info_dict['task_output_path'])
```

Out:

```
WARNING: Found unrecognized keyword args. These are ignored.
--nBatch
Dataset Summary:
X Data
num examples: 272
num dims: 2
Allocation Model: DP mixture with K=0. Concentration gamma0= 5.00
Obs. Data Model: Gaussian with full covariance.
Obs. Data Prior: Gauss-Wishart on mean and covar of each cluster
E[ mean[k] ] =
[0. 0.]
E[ covar[k] ] =
[[5. 0.]
[0. 5.]]
Initialization:
initname = randexamples
K = 20 (number of clusters)
seed = 1607680
elapsed_time: 0.0 sec
Learn Alg: VB | task 1/1 | alg. seed: 1607680 | data order seed: 8541952
task_output_path: /tmp/faithful/showcase-K=20-lik=Gauss-ECovMat=5*eye/1
1/1000 after 0 sec. | 191.9 MiB | K 20 | loss 2.904406498e+00 |
2/1000 after 0 sec. | 191.9 MiB | K 20 | loss 2.876066302e+00 | Ndiff 2.071
3/1000 after 0 sec. | 191.9 MiB | K 20 | loss 2.864944306e+00 | Ndiff 2.664
4/1000 after 0 sec. | 191.9 MiB | K 20 | loss 2.852026479e+00 | Ndiff 3.160
5/1000 after 0 sec. | 191.9 MiB | K 20 | loss 2.836506635e+00 | Ndiff 3.522
6/1000 after 0 sec. | 191.9 MiB | K 20 | loss 2.817804673e+00 | Ndiff 3.636
7/1000 after 0 sec. | 191.9 MiB | K 20 | loss 2.787080350e+00 | Ndiff 3.495
8/1000 after 0 sec. | 191.9 MiB | K 20 | loss 2.743017730e+00 | Ndiff 3.349
9/1000 after 0 sec. | 191.9 MiB | K 20 | loss 2.714906517e+00 | Ndiff 3.494
10/1000 after 0 sec. | 191.9 MiB | K 20 | loss 2.670842807e+00 | Ndiff 4.089
11/1000 after 0 sec. | 191.9 MiB | K 20 | loss 2.640944068e+00 | Ndiff 4.696
12/1000 after 0 sec. | 191.9 MiB | K 20 | loss 2.600612644e+00 | Ndiff 5.201
13/1000 after 0 sec. | 191.9 MiB | K 20 | loss 2.582832638e+00 | Ndiff 5.436
14/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.569005251e+00 | Ndiff 5.209
15/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.544279312e+00 | Ndiff 4.376
16/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.523247072e+00 | Ndiff 2.925
17/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.511328327e+00 | Ndiff 1.441
18/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.503251361e+00 | Ndiff 1.441
19/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.491852524e+00 | Ndiff 1.448
20/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.490247584e+00 | Ndiff 1.447
21/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.488483904e+00 | Ndiff 1.524
22/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.486427687e+00 | Ndiff 1.578
23/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.484005616e+00 | Ndiff 1.586
24/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.481221463e+00 | Ndiff 1.527
25/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.478177971e+00 | Ndiff 1.375
26/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.475094563e+00 | Ndiff 1.194
27/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.471974138e+00 | Ndiff 1.209
28/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.467024647e+00 | Ndiff 1.213
29/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.453713427e+00 | Ndiff 1.207
30/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.445147652e+00 | Ndiff 1.191
31/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.439161802e+00 | Ndiff 1.170
32/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.438783471e+00 | Ndiff 1.143
33/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.438429230e+00 | Ndiff 1.114
34/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.438098475e+00 | Ndiff 1.082
35/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.437790556e+00 | Ndiff 1.051
36/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.437503774e+00 | Ndiff 1.023
37/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.437235314e+00 | Ndiff 1.000
38/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.436981439e+00 | Ndiff 0.984
39/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.436737744e+00 | Ndiff 0.977
40/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.436499373e+00 | Ndiff 0.979
41/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.436261156e+00 | Ndiff 0.992
42/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.436017666e+00 | Ndiff 1.014
43/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.435763198e+00 | Ndiff 1.048
44/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.435491737e+00 | Ndiff 1.091
45/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.435196931e+00 | Ndiff 1.145
46/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.434872198e+00 | Ndiff 1.209
47/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.434511031e+00 | Ndiff 1.279
48/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.434107639e+00 | Ndiff 1.354
49/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.433657974e+00 | Ndiff 1.428
50/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.433161085e+00 | Ndiff 1.498
51/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.432620547e+00 | Ndiff 1.556
52/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.432045498e+00 | Ndiff 1.597
53/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.431450777e+00 | Ndiff 1.617
54/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.430855677e+00 | Ndiff 1.617
55/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.430280760e+00 | Ndiff 1.600
56/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.429742357e+00 | Ndiff 1.574
57/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.429246005e+00 | Ndiff 1.547
58/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.428783131e+00 | Ndiff 1.530
59/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.428335044e+00 | Ndiff 1.531
60/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.427882144e+00 | Ndiff 1.554
61/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.427412198e+00 | Ndiff 1.598
62/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.426923365e+00 | Ndiff 1.660
63/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.426419184e+00 | Ndiff 1.735
64/1000 after 1 sec. | 191.9 MiB | K 20 | loss 2.425898789e+00 | Ndiff 1.819
65/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.425353548e+00 | Ndiff 1.909
66/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.424771068e+00 | Ndiff 2.006
67/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.424138280e+00 | Ndiff 2.111
68/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.423441574e+00 | Ndiff 2.224
69/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.422666132e+00 | Ndiff 2.343
70/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.421796837e+00 | Ndiff 2.464
71/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.420824917e+00 | Ndiff 2.578
72/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.419763730e+00 | Ndiff 2.674
73/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.418655856e+00 | Ndiff 2.744
74/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.417536411e+00 | Ndiff 2.794
75/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.416396660e+00 | Ndiff 2.833
76/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.415209641e+00 | Ndiff 2.867
77/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.413957301e+00 | Ndiff 2.892
78/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.412627524e+00 | Ndiff 2.908
79/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.411204929e+00 | Ndiff 2.915
80/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.409665366e+00 | Ndiff 2.917
81/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.407972796e+00 | Ndiff 2.914
82/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.406075452e+00 | Ndiff 2.906
83/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.403897086e+00 | Ndiff 2.888
84/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.401317119e+00 | Ndiff 2.847
85/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.398127190e+00 | Ndiff 2.749
86/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.393870554e+00 | Ndiff 2.514
87/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.385927886e+00 | Ndiff 2.011
88/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.373557979e+00 | Ndiff 1.320
89/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.370431956e+00 | Ndiff 0.732
90/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.361734581e+00 | Ndiff 0.225
91/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356420337e+00 | Ndiff 0.052
92/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356419191e+00 | Ndiff 0.040
93/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356418521e+00 | Ndiff 0.031
94/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356418120e+00 | Ndiff 0.024
95/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417878e+00 | Ndiff 0.019
96/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417731e+00 | Ndiff 0.015
97/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417640e+00 | Ndiff 0.011
98/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417584e+00 | Ndiff 0.009
99/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417550e+00 | Ndiff 0.007
100/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417528e+00 | Ndiff 0.006
101/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417515e+00 | Ndiff 0.004
102/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417507e+00 | Ndiff 0.003
103/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417502e+00 | Ndiff 0.003
104/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417499e+00 | Ndiff 0.002
105/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417497e+00 | Ndiff 0.002
106/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417495e+00 | Ndiff 0.001
107/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417495e+00 | Ndiff 0.001
108/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417494e+00 | Ndiff 0.001
109/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417494e+00 | Ndiff 0.001
110/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417494e+00 | Ndiff 0.001
111/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417493e+00 | Ndiff 0.000
112/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417493e+00 | Ndiff 0.000
113/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417493e+00 | Ndiff 0.000
114/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417493e+00 | Ndiff 0.000
115/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417493e+00 | Ndiff 0.000
116/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417493e+00 | Ndiff 0.000
117/1000 after 2 sec. | 191.9 MiB | K 20 | loss 2.356417493e+00 | Ndiff 0.000
... done. converged.
```

Assume full covariances and fix all means to zero.

Start with too many clusters (K=20)

```
zm_trained_model, zm_info_dict = bnpy.run(
dataset, 'DPMixtureModel', 'ZeroMeanGauss', 'VB',
output_path='/tmp/faithful/showcase-K=20-lik=ZeroMeanGauss-ECovMat=5*eye/',
nLap=1000, nTask=1, nBatch=1, convergeThr=0.0001,
gamma0=gamma, sF=sF, ECovMat='eye',
K=K, initname='randexamples',
)
show_clusters_over_time(zm_info_dict['task_output_path'])
```

Out:

```
WARNING: Found unrecognized keyword args. These are ignored.
--nBatch
Dataset Summary:
X Data
num examples: 272
num dims: 2
Allocation Model: DP mixture with K=0. Concentration gamma0= 5.00
Obs. Data Model: Gaussian with fixed zero means, full covariance.
Obs. Data Prior: Wishart on prec matrix Lam
E[ CovMat[k] ] =
[[5. 0.]
[0. 5.]]
Initialization:
initname = randexamples
K = 20 (number of clusters)
seed = 1607680
elapsed_time: 0.0 sec
Learn Alg: VB | task 1/1 | alg. seed: 1607680 | data order seed: 8541952
task_output_path: /tmp/faithful/showcase-K=20-lik=ZeroMeanGauss-ECovMat=5*eye/1
1/1000 after 0 sec. | 193.1 MiB | K 20 | loss 4.019419551e+00 |
2/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.989063967e+00 | Ndiff 3.437
3/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.941416771e+00 | Ndiff 3.621
4/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.899222162e+00 | Ndiff 3.882
5/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.876371765e+00 | Ndiff 4.129
6/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.842038547e+00 | Ndiff 4.274
7/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.808536791e+00 | Ndiff 4.341
8/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.779782054e+00 | Ndiff 4.418
9/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.755287922e+00 | Ndiff 4.502
10/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.733837701e+00 | Ndiff 4.577
11/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.700117498e+00 | Ndiff 4.646
12/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.694082693e+00 | Ndiff 4.826
13/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.686765019e+00 | Ndiff 4.986
14/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.675117147e+00 | Ndiff 5.045
15/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.652297952e+00 | Ndiff 4.998
16/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.639249110e+00 | Ndiff 4.933
17/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.603588941e+00 | Ndiff 4.758
18/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.598749399e+00 | Ndiff 4.729
19/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.592583511e+00 | Ndiff 4.761
20/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.574936974e+00 | Ndiff 4.760
21/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.572459120e+00 | Ndiff 4.885
22/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.570977707e+00 | Ndiff 5.084
23/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.569306514e+00 | Ndiff 5.272
24/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.567412054e+00 | Ndiff 5.442
25/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.565249330e+00 | Ndiff 5.588
26/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.562749369e+00 | Ndiff 5.701
27/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.559772804e+00 | Ndiff 5.771
28/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.555894232e+00 | Ndiff 5.784
29/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.549078207e+00 | Ndiff 5.714
30/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.531303622e+00 | Ndiff 5.559
31/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.529382170e+00 | Ndiff 5.572
32/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.527237440e+00 | Ndiff 5.642
33/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.524655304e+00 | Ndiff 5.674
34/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.521314832e+00 | Ndiff 5.648
35/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.516111933e+00 | Ndiff 5.520
36/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.502294322e+00 | Ndiff 5.202
37/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.491586191e+00 | Ndiff 4.853
38/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.485039030e+00 | Ndiff 4.637
39/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.468792370e+00 | Ndiff 4.344
40/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.467909258e+00 | Ndiff 4.313
41/1000 after 0 sec. | 193.1 MiB | K 20 | loss 3.466944463e+00 | Ndiff 4.367
42/1000 after 1 sec. | 193.1 MiB | K 20 | loss 3.465874350e+00 | Ndiff 4.413
43/1000 after 1 sec. | 193.1 MiB | K 20 | loss 3.464679105e+00 | Ndiff 4.447
44/1000 after 1 sec. | 193.1 MiB | K 20 | loss 3.463333221e+00 | Ndiff 4.465
45/1000 after 1 sec. | 193.1 MiB | K 20 | loss 3.461803293e+00 | Ndiff 4.461
46/1000 after 1 sec. | 193.1 MiB | K 20 | loss 3.460044727e+00 | Ndiff 4.426
47/1000 after 1 sec. | 193.1 MiB | K 20 | loss 3.457996608e+00 | Ndiff 4.349
48/1000 after 1 sec. | 193.1 MiB | K 20 | loss 3.455573178e+00 | Ndiff 4.210
49/1000 after 1 sec. | 193.1 MiB | K 20 | loss 3.452647608e+00 | Ndiff 3.983
50/1000 after 1 sec. | 193.1 MiB | K 20 | loss 3.449011332e+00 | Ndiff 3.629
51/1000 after 1 sec. | 193.1 MiB | K 20 | loss 3.444220039e+00 | Ndiff 3.091
52/1000 after 1 sec. | 193.1 MiB | K 20 | loss 3.436689553e+00 | Ndiff 2.295
53/1000 after 1 sec. | 193.1 MiB | K 20 | loss 3.416217624e+00 | Ndiff 1.184
54/1000 after 1 sec. | 193.1 MiB | K 20 | loss 3.397676918e+00 | Ndiff 0.269
55/1000 after 1 sec. | 193.1 MiB | K 20 | loss 3.395369454e+00 | Ndiff 0.002
56/1000 after 1 sec. | 193.1 MiB | K 20 | loss 3.395369454e+00 | Ndiff 0.000
... done. converged.
```

Assume full covariances and fix all means to zero.

Start with too many clusters (K=20)

```
stoch_trained_model, stoch_info_dict = bnpy.run(
dataset, 'DPMixtureModel', 'Gauss', 'soVB',
output_path=\
'/tmp/faithful/showcase-K=20-lik=Gauss-ECovMat=5*eye-alg=soVB/',
nLap=50, nTask=1, nBatch=50,
rhoexp=0.51, rhodelay=1.0,
gamma0=gamma, sF=sF, ECovMat='eye',
K=K, initname='randexamples',
)
show_clusters_over_time(stoch_info_dict['task_output_path'])
```

Out:

```
Dataset Summary:
X Data
total size: 272 units
batch size: 6 units
num. batches: 50
Allocation Model: DP mixture with K=0. Concentration gamma0= 5.00
Obs. Data Model: Gaussian with full covariance.
Obs. Data Prior: Gauss-Wishart on mean and covar of each cluster
E[ mean[k] ] =
[0. 0.]
E[ covar[k] ] =
[[5. 0.]
[0. 5.]]
Initialization:
initname = randexamples
K = 20 (number of clusters)
seed = 1607680
elapsed_time: 0.0 sec
Learn Alg: soVB | task 1/1 | alg. seed: 1607680 | data order seed: 8541952
task_output_path: /tmp/faithful/showcase-K=20-lik=Gauss-ECovMat=5*eye-alg=soVB/1
0.020/50 after 0 sec. | 194.2 MiB | K 20 | loss 3.020105590e+01 | lrate 0.7022
0.040/50 after 0 sec. | 194.2 MiB | K 20 | loss 1.693550049e+01 | lrate 0.5710
0.060/50 after 0 sec. | 194.2 MiB | K 20 | loss 1.182159020e+01 | lrate 0.4931
1.000/50 after 1 sec. | 194.2 MiB | K 20 | loss 1.314590658e+01 | lrate 0.1346
2.000/50 after 2 sec. | 194.2 MiB | K 20 | loss 2.522804913e+00 | lrate 0.0950
3.000/50 after 3 sec. | 194.2 MiB | K 20 | loss 2.507513303e+00 | lrate 0.0774
4.000/50 after 4 sec. | 194.2 MiB | K 20 | loss 2.498366509e+00 | lrate 0.0669
5.000/50 after 4 sec. | 194.2 MiB | K 20 | loss 2.475120548e+00 | lrate 0.0597
6.000/50 after 5 sec. | 194.2 MiB | K 20 | loss 2.469641662e+00 | lrate 0.0544
7.000/50 after 6 sec. | 194.2 MiB | K 20 | loss 2.470932762e+00 | lrate 0.0503
8.000/50 after 7 sec. | 194.2 MiB | K 20 | loss 2.466158362e+00 | lrate 0.0470
9.000/50 after 8 sec. | 194.2 MiB | K 20 | loss 2.465517619e+00 | lrate 0.0443
10.000/50 after 10 sec. | 194.2 MiB | K 20 | loss 2.465435382e+00 | lrate 0.0420
11.000/50 after 10 sec. | 194.2 MiB | K 20 | loss 2.467696036e+00 | lrate 0.0400
12.000/50 after 12 sec. | 194.2 MiB | K 20 | loss 2.461949856e+00 | lrate 0.0383
13.000/50 after 13 sec. | 194.2 MiB | K 20 | loss 2.461043110e+00 | lrate 0.0367
14.000/50 after 14 sec. | 194.2 MiB | K 20 | loss 2.461264382e+00 | lrate 0.0354
15.000/50 after 15 sec. | 194.2 MiB | K 20 | loss 2.458851451e+00 | lrate 0.0342
16.000/50 after 15 sec. | 194.2 MiB | K 20 | loss 2.454655643e+00 | lrate 0.0330
17.000/50 after 17 sec. | 194.2 MiB | K 20 | loss 2.451234188e+00 | lrate 0.0320
18.000/50 after 17 sec. | 194.2 MiB | K 20 | loss 2.446281746e+00 | lrate 0.0311
19.000/50 after 19 sec. | 194.2 MiB | K 20 | loss 2.440793273e+00 | lrate 0.0303
20.000/50 after 20 sec. | 194.2 MiB | K 20 | loss 2.434143198e+00 | lrate 0.0295
21.000/50 after 21 sec. | 194.2 MiB | K 20 | loss 2.423545849e+00 | lrate 0.0288
22.000/50 after 22 sec. | 194.2 MiB | K 20 | loss 2.414924985e+00 | lrate 0.0281
23.000/50 after 23 sec. | 194.2 MiB | K 20 | loss 2.405741175e+00 | lrate 0.0275
24.000/50 after 25 sec. | 194.2 MiB | K 20 | loss 2.396273286e+00 | lrate 0.0269
25.000/50 after 25 sec. | 194.2 MiB | K 20 | loss 2.388169784e+00 | lrate 0.0263
26.000/50 after 26 sec. | 194.2 MiB | K 20 | loss 2.383086462e+00 | lrate 0.0258
27.000/50 after 27 sec. | 194.2 MiB | K 20 | loss 2.378566216e+00 | lrate 0.0253
28.000/50 after 28 sec. | 194.2 MiB | K 20 | loss 2.374468977e+00 | lrate 0.0248
29.000/50 after 29 sec. | 194.2 MiB | K 20 | loss 2.369573743e+00 | lrate 0.0244
30.000/50 after 30 sec. | 194.2 MiB | K 20 | loss 2.365030091e+00 | lrate 0.0240
31.000/50 after 31 sec. | 194.2 MiB | K 20 | loss 2.361840492e+00 | lrate 0.0236
32.000/50 after 32 sec. | 194.2 MiB | K 20 | loss 2.358180297e+00 | lrate 0.0232
33.000/50 after 33 sec. | 194.2 MiB | K 20 | loss 2.355370718e+00 | lrate 0.0229
34.000/50 after 34 sec. | 194.2 MiB | K 20 | loss 2.354001069e+00 | lrate 0.0225
35.000/50 after 36 sec. | 194.2 MiB | K 20 | loss 2.352655966e+00 | lrate 0.0222
36.000/50 after 37 sec. | 194.2 MiB | K 20 | loss 2.351706756e+00 | lrate 0.0219
37.000/50 after 39 sec. | 194.2 MiB | K 20 | loss 2.351346242e+00 | lrate 0.0216
38.000/50 after 41 sec. | 194.2 MiB | K 20 | loss 2.351470554e+00 | lrate 0.0213
39.000/50 after 43 sec. | 194.2 MiB | K 20 | loss 2.351530696e+00 | lrate 0.0210
40.000/50 after 44 sec. | 194.2 MiB | K 20 | loss 2.351708300e+00 | lrate 0.0207
41.000/50 after 46 sec. | 194.2 MiB | K 20 | loss 2.351489520e+00 | lrate 0.0205
42.000/50 after 48 sec. | 194.2 MiB | K 20 | loss 2.351625569e+00 | lrate 0.0202
43.000/50 after 49 sec. | 194.2 MiB | K 20 | loss 2.351357552e+00 | lrate 0.0200
44.000/50 after 50 sec. | 194.2 MiB | K 20 | loss 2.351536177e+00 | lrate 0.0197
45.000/50 after 51 sec. | 194.2 MiB | K 20 | loss 2.351543540e+00 | lrate 0.0195
46.000/50 after 52 sec. | 194.2 MiB | K 20 | loss 2.351346627e+00 | lrate 0.0193
47.000/50 after 53 sec. | 194.2 MiB | K 20 | loss 2.351293738e+00 | lrate 0.0191
48.000/50 after 54 sec. | 194.2 MiB | K 20 | loss 2.351507196e+00 | lrate 0.0189
49.000/50 after 56 sec. | 194.2 MiB | K 20 | loss 2.351496294e+00 | lrate 0.0187
50.000/50 after 58 sec. | 194.2 MiB | K 20 | loss 2.351523756e+00 | lrate 0.0185
... active. not converged.
```

```
pylab.figure()
pylab.plot(
zm_info_dict['lap_history'],
zm_info_dict['loss_history'], 'b.-',
label='full_covar zero_mean')
pylab.plot(
full_info_dict['lap_history'],
full_info_dict['loss_history'], 'k.-',
label='full_covar')
pylab.plot(
diag_info_dict['lap_history'],
diag_info_dict['loss_history'], 'r.-',
label='diag_covar')
pylab.plot(
stoch_info_dict['lap_history'],
stoch_info_dict['loss_history'], 'c.:',
label='full_covar stochastic')
pylab.legend(loc='upper right')
pylab.xlabel('num. laps')
pylab.ylabel('loss')
pylab.xlim([4, 100]) # avoid early iterations
pylab.ylim([2.34, 4.0]) # handpicked
pylab.draw()
pylab.tight_layout()
```

**Total running time of the script:** ( 1 minutes 6.318 seconds)