I use a diverse range of machine learning models tailored to address specific data challenges. For predictive tasks, I leverage supervised learning models such as Linear Regression, Logistic Regression, and Support Vector Machines (SVM). In situations where labeled data is limited, I employ semi-supervised learning models that intelligently combine aspects of both supervised and unsupervised learning. To unravel hidden patterns within data, I utilize unsupervised learning models like K-Means Clustering, Hierarchical Clustering, and Principal Component Analysis (PCA). For ensemble learning, models like Random Forest and Gradient Boosting Machines (GBM) are employed to enhance predictive accuracy. For complex tasks such as reinforcement learning, I implement Q-Learning and Deep Q Networks (DQN). Neural network architectures, including Feedforward Neural Networks, Convolutional Neural Networks (CNN), and Recurrent Neural Networks (RNN), are tailored for a variety of applications. Additionally, I incorporate instance-based learning with K-Nearest Neighbors (KNN), decision tree models like Classification and Regression Trees (CART), and Bayesian models such as Naive Bayes.