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Hello, I'm

Sai Vaishnavi Vedantham

Data Science graduate

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About Me ๐Ÿ’ป

I am Sai Vaishnavi Vedantham, a passionate Data Science graduate with expertise in machine learning, NLP, data visualization, and big data technologies. My goal is to become an ML Engineer, leveraging AI-driven solutions to solve complex problems and generate meaningful insights.

Professional Experience ๐Ÿ’ผ

Data Science Research Assistant, UTA

Web Designer, UTA

Data Analytics Intern

Education ๐Ÿ“š

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SQL

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SAS

Browse My Recent

Projects

Finger Tap Detection

Finger Tap Detection for Parkinsonโ€™s Disease

Developed a multi-class classification system for finger-tap detection using deep learning. Implemented MediaPipe for real-time hand tracking and classified finger taps using an MLP (Multi-Layer Perceptron). Designed to monitor Parkinson's progression, tracking involuntary taps as a potential disease indicator.

Chatbot with RAG

Chatbot with Retrieval-Augmented Generation (RAG)

Developed an AI-powered chatbot leveraging Retrieval-Augmented Generation (RAG) for context-aware responses. Used FAISS for efficient retrieval of knowledge chunks from structured sources. Optimized query embeddings to improve accuracy and reduce response latency. Personally trained this chatbot on a Python textbook, making it a study assistant for quick topic revisions.

Speech Emotion Recognition

Speech Emotion Recognition using TESS Dataset

Developed a Speech Emotion Recognition (SER) system using the Toronto Emotional Speech Set (TESS) dataset. Extracted key speech features using Mel-Frequency Cepstral Coefficients (MFCCs) and applied Principal Component Analysis (PCA) for dimensionality reduction. Trained multiple classifiers (SVM, Logistic Regression, KNN, and Random Forest) and identified SVM as the best-performing model with 91% accuracy. The system enables real-time speech emotion classification for AI-driven applications.

Sentiment Analysis

Sentiment Analysis for a Furniture Brand

Developed a sentiment analysis pipeline to analyze customer reviews. Applied NLP techniques such as tokenization, stemming, stopword removal, and text vectorization (TF-IDF & BoW) for effective text processing. Built a machine learning-based sentiment classifier using Logistic Regression and Multinomial Naรฏve Bayes, achieving over 72% test accuracy. Designed data visualizations to explore sentiment distribution, providing insights for businesses to understand customer opinions.

Sentiment Analysis

Predictive Maintenance for Aircraft Engines

Developed an AI-powered predictive maintenance system for aircraft turbofan engines using the NASA C-MAPSS dataset. The system forecasted potential engine failures, reducing unplanned maintenance downtime by 30% and improving operational efficiency. Leveraged machine learning models to predict maintenance needs with 95% accuracy, ensuring timely part replacements and minimizing unexpected failures.

Customer Churn Analysis

Customer Churn Analysis in SAS

Conducted a comprehensive customer churn analysis using a telecom dataset in SAS. Performed data cleaning, missing value imputation, feature engineering, and logistic regression modeling. Evaluated the model with ROC curves, precision, recall, and F1-score metrics. Implemented a manual 5-fold cross-validation pipeline to validate model robustness and predict customer churn with actionable insights.

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