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Savitzky-Golay filter

1

See [Wikipedia](https://www.wikiwand.com/en/Savitzky%E2%80%93Golay_filter). The winners of the Kaggle Ashrae competition [used it](https://www.kaggle.com/c/ashrae-energy-prediction/discussion/124709). I checked and it can be computed online. `scipy` [has a function](https://docs.scipy.org/doc/scipy/reference/generated/scipy.signal.savgol_coeffs.html) to obtain the convolution coefficients. It seems...

MaxHalford

fix and format by ruff

2

YoshitakaNaraoka

IndexError: list index out of range with DBSTREAM when updating the metric (Silhouette)

6

## Versions **river version**: 0.15.0 **Python version**: 3.10.4 **Operating system**: macOS Ventura 13.2 ## Describe the bug Getting an IndexError when running the DBSTREAM and trying to update the Silhouette...

qetdr

http://www.icml-2011.org/papers/198_icmlpaper.pdf

MaxHalford

Implement MLPClassifier

2

We already have an `MLPRegressor`

MaxHalford

Perceptron predict_many as bool

4

Hi, Why my predict_many output is bool instead of a value using perceptron? Is it possible to change this behavior?

raul-parada

DBSTREAM: add "time" argument to the learn function

2

Hi! I want to propose a new feature for DBSTREAM. DBSTREAM uses a protected internal timer (`_time_stamp`) to measure the time between learning steps. There are 2 issues with this...

ShkarupaDC

Returning 0 clusters regardless of data (even using examples from documentation)

4

## Versions **river version**: installed from github **Python version**: 3.11 **Operating system**: Mac OS ## Describe the bug With openai embeddings, Denstream is returning 0 clusters regardless of the set...

shiraeisenberg

Result too large

7

I’m running a model using DBStream, and after training on about 100k datapoints, I get 34 Result too large. I’m sure this is something I’m doing wrong and not an...

vantubbe

MLP Regressor: ValueError: shapes (110,4) and (2,110) not aligned: 4 (dim 1) != 2 (dim 0)

4

I'm trying to use the MLPRegressor model to learn a batch (learn_many, pred_many) of dataframes with variable dimensions in the number of rows, however the number of columns is 2...

raul-parada