scikit-learn DBSCAN memory usage

UPDATED: In the end, the solution I opted to use for clustering my large dataset was one suggested by Anony-Mousse below. That is, using ELKI's DBSCAN implimentation to do my clustering rather...

How to handle NaNs returned from 'roc_curve' before passing to 'auc'?

I am using 'roc_curve' from the metrics model in scikit-learn. The example shows that 'roc_curve' should be called before 'auc' similar to: fpr, tpr, thresholds = metrics.roc_curve(y, pred,...

Using cosine distance with scikit learn KNeighborsClassifier

Is it possible to use something like 1 - cosine similarity with scikit learn's KNeighborsClassifier? This answer says no, but on the documentation for KNeighborsClassifier, it says the metrics...

Accuracy Score ValueError: Can't Handle mix of binary and continuous target

I'm using linear_model.LinearRegression from scikit-learn as a predictive model. It works and it's perfect. I have a problem to evaluate the predicted results using the accuracy_score metric. This...

NoBrokersAvailable: NoBrokersAvailable-Kafka Error

i have already started to learn Kafka. Trying basic operations on it. I have stucked on a point which about the 'Brokers'. My kafka is running but when i want to create a partition. from kafka...

How to pass argument to scoring function in scikit-learn's LogisticRegressionCV call

Problem I am trying to use scikit-learn's LogisticRegressionCV with roc_auc_score as the scoring metric. from sklearn.linear_model import LogisticRegression from sklearn.metrics import...

using confusion matrix as scoring metric in cross validation in scikit learn

I am creating a pipeline in scikit learn, pipeline = Pipeline([ ('bow', CountVectorizer()), ('classifier', BernoulliNB()), ]) and computing the accuracy using cross validation scores...

How to compute Receiving Operating Characteristic (ROC) and AUC in keras?

I have a multi output(200) binary classification model which I wrote in keras. In this model I want to add additional metrics such as ROC and AUC but to my knowledge keras dosen't have in-built...

Siamese networks: Why does the network to be duplicated?

The DeepFace paper from Facebook uses a Siamese network to learn a metric. They say that the DNN that extracts the 4096 dimensional face embedding has to be duplicated in a Siamese network, but...

NaNs with customised weighted F1-Score in Keras

I need to compute a weighted F1-score in such a way to penalize more errors over my least popular label (typical binary classification problem with an unbalanced dataset). Unfortunately, I don't...

Designing a real-time data pipeline for an e-commerce web site

I want to learn Apache Kafka. I read articles and documents but I could not figure out how Kafka works. There are lots of questions in my mind :( I want to create a Kafka cluster and develop some...

Keras metric equivalent to scikit learn's average precision score metric

I've had a look at the Keras metrics documentation and couldn't find an equivalent to scikit learn's average precision score metric (which I think is the same as the area under the...

How to use multiple cores with sklearn dbscan?

I'm trying to process a large volume of data through dbscan and would love to use all cores available to me on the machine to speed up the computation. I'm using a custom distance metric, but the...

Material-UI Responsive Cards

I'm in the process of testing out Material-UI. I've been using Bootstrap for a long time, but am interested in adapting some React projects to Material-UI. Something I've been trying to figure out...

What is reference when it says L1 Cache Reference or Main Memory Reference

So I am trying to learn performance metrics of various components of computer like L1 cache, L2 cache, main memory, ethernet, disk etc as below: Latency Comparison...

Scoring metrics from Keras scikit-learn wrapper in cross validation with one-hot encoded labels

I am implementing a neural network and I would like to assess its performance with cross validation. Here is my current code: def recall_m(y_true, y_pred): true_positives =...

Prometheus (Docker): determine available memory per node (which metric is correct?)

We have been struggling to create a good memory monitoring for our nodes running Docker components. We use Prometheus in combination with cadvisor and node_exporter. What is the best way to...

How to create a custom metrics end point for Grafana using Spring Boot 2?

I am trying to learn Grafana and creating application using Spring Boot 2, Prometheus and Grafana for metrics. I need to create custom metrics for per day student creation count. import...

Using optuna LightGBMTunerCV as starting point for further search with optuna

I'm trying to use LightGBM for a regression problem (mean absolute error/L1 - or similar like Huber or pseud-Huber - loss) and I primarily want to tune my hyperparameters. LightGBMTunerCV in...

ImportError when importing metric from sklearn

When I am trying to import a metric from sklearn, I get the following error: from sklearn.metrics import mean_absolute_percentage_error ImportError: cannot import name...

R: Multiclass Matrices

I am working with the R programming language. I am trying to learn how to make a "confusion matrix" for multiclass variables (e.g....

How can I implement pam clustering algorithm using gower distance in sklearn?

I would like to implement the pam (KMedoid, method='pam') algorithm using gower distance. My dataset contains mixed features, numeric and categorical, several cat features have 1000+ different...

Calculating micro F-1 score in keras

I have a dataset with 15 imbalanced classes and trying to do multilabel classification with keras. I am trying to use micro F-1 score as a metric. My model: # Create a VGG instance model_vgg =...

metrics-server:v0.4.2 cannot scrape metrics inside AWS kubernetes cluster environment (cannot validate certificate, doesn't contain any IP SANs)

Situation: The metrics-server deployment image is: k8s.gcr.io/metrics-server/metrics-server:v0.4.2 I have used kops tool to deploy a kubernetes cluster into one AWS account. The error and reason...

Why doesn't trainer report evaluation metrics while training in the tutorial?

I am following this tutorial to learn about the trainer API. https://huggingface.co/transformers/training.html I copied the code as below: from datasets import load_dataset import numpy as...

Why is KNN so much faster with cosine distance than Euclidean distance?

I am fitting a k-nearest neighbors classifier using scikit learn and noticed that the fitting is faster, often by an order of magnitude or more, when using the cosine similarity between two...

PromQL query to calculate service uptime & downtime from a fixed date

I'm trying to build a basic SRE dashboard in order to learn Prometheus/Grafana. I want to calculate the number of hours the service has been running & the number of hours its been down since the...

A problem in using AIF360 metrics in my code

I am trying to run AI Fairness 360 metrics on skit-learn (imbalanced-learn) algorithms, but I have a problem with my code. The problem is when I apply skit-learn (imbalanced-learn) algorithms like...

Getting prometheus/grafana and k3s to work together

T learn kubernetes I've built myself a bare metal cluster using 4 Raspberry PIs set it up using k3s: # curl -sfL https://get.k3s.io | sh - Added nodes etc., and everything comes up and I can see...

Core Web Vitals Assessment: Failed

There is a new feature in PageSpeed Insights that shows you the experience of real users. Now I checked one of my websites with this feature on mobile and I got this message: "Core Web Vitals...