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Data Preprocessing: Handling missing values and scaling improved the model's performance, underscoring the importance of data preprocessing in machine learning.
Model Comparison: Testing KNN, Decision Tree, and MLP classifiers revealed distinct strengths, highlighting the value of multiple models in robust prediction.
Hyperparameter Tuning: Adjusting parameters, like neighbors in KNN and max depth in Decision Trees, refined accuracy, illustrating the impact of model tuning.
Data Visualization Insight: Pie charts helped understand the distribution of store types, location, and discounts, emphasizing the role of visual analysis in data comprehension.
Data Transformation: Mapping categorical variables to numerical values streamlined the machine learning process, reinforcing the need for data preparation.
Model Implementation: Using LightGBM for order prediction demonstrated how ensemble methods can efficiently handle structured data for accurate predictions.
Data Processing and Annotation: Learn the importance of accurate data preprocessing and labeling to ensure reliable model training and high detection precision.
Feature Engineering Skills: Develop skills in feature extraction and engineering, improving the model’s ability to distinguish between various activities.
Machine Learning Model Selection: Gain insights into selecting appropriate models for time-series data, enhancing accuracy in detecting human activities.
Data Transformation: Converting numeric codes into readable labels (e.g., seasons, months) enhances dataset interpretability, aiding in clearer visual analysis.
Feature Selection: RFE and VIF analysis were essential for choosing impactful variables, emphasizing the importance of removing redundant features in regression.
Model Evaluation: The high R2 score on test data validates the model's accuracy, showing that refined feature selection can lead to reliable predictions.
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