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Common Machine Learning Obstacles

KDnuggets

In this blog, Seth DeLand of MathWorks discusses two of the most common obstacles relate to choosing the right classification model and eliminating data overfitting.

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Meet the finalists of the Pushback to the Future Challenge

DrivenData Labs

Several additional approaches were attempted but deprioritized or entirely eliminated from the final workflow due to lack of positive impact on the validation MAE. Summary of approach: Our solution for Phase 1 is a gradient boosted decision tree approach with a lot of feature engineering.

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Meet the winners of the Water Supply Forecast Rodeo Hindcast Stage

DrivenData Labs

There are two model architectures underlying the solution, both based on the Catboost implementation of gradient boosting on decision trees. Final Prize Stage : Refined models are being evaluated once again on historical data but using a more robust cross-validation procedure.

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Hyperparameters in Machine Learning: Categories  & Methods

Pickl AI

This blog explores their types, tuning techniques, and tools to empower your Machine Learning models. They vary significantly between model types, such as neural networks , decision trees, and support vector machines. SVMs Adjusting kernel coefficients (gamma) alongside the margin parameter optimises decision boundaries.

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Does bootstrap aggregation help in improving model performance and stability ?

Heartbeat

Before continuing, revisit the lesson on decision trees if you need help understanding what they are. We can compare the performance of the Bagging Classifier and a single Decision Tree Classifier now that we know the baseline accuracy for the test dataset. Bagging is a development of this idea.

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Difference Between Underfitting and Overfitting in Machine Learning

Pickl AI

Hence, in this blog, we are going to discuss how to avoid underfitting and overfitting. K-fold Cross Validation ML experts use cross-validation to resolve the issue. To test this, you decide to create a validation set, with another 1000 data points. How to Avoid Overfitting in Machine Learning?

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Understanding and Building Machine Learning Models

Pickl AI

Summary: The blog provides a comprehensive overview of Machine Learning Models, emphasising their significance in modern technology. For example, linear regression is typically used to predict continuous variables, while decision trees are great for classification and regression tasks. For a regression problem (e.g.,