Shiva Esna Ashari
Senior Data Scientist @Elicit, Llc
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WORK HISTORY
Senior Data Scientist @Elicit, Llc
Open-ended Survey Analysis: Utilized NLP models, including topic modeling using Latent Dirichlet Allocation (LDA), and vectorization methods to analyze 2k+ open ended survey responses. • Text Classification: Implemented a text classification model using transformer-based models (ChatGPT-3.5 and S-BERT embeddings) for semantic understanding and a Support Vector Machine (SVM) classifier, improving classification accuracy by 15% over traditional NLP methods.• Language Model Demonstration: Demonstrated the data science team how to run, fine-tune, and implement retrieval-augmented generation (RAG) with the T5 language model on Amazon SageMaker using dummy data.• Personalized Recommendations: Developed a matrix factorization model for personalized product recommendations, enhancing targeted advertising strategies.• Customer Migration Modeling: Created a Deep Neural Network (DNN) on Google BigQuery to predict customer migration across segments over time.• Customer Segmentation: Implemented k-means clustering on Google Cloud for 10 million customers and over 200 million transactions, resulting in actionable segments adopted and productionized by the client.• High-Potential Customer Identification: Employed XGBoost modeling to identify high-potential new customer cohorts, supporting strategic planning for marketing.• Marketing and Experimentation: Designed A/B tests and association rule mining to create effective marketing campaign strategies, leading to data-driven decisions and multiple successful campaigns.• Data Pipeline Development: Built data pipelines in Databricks and Snowflake, connecting to an Azure data lake, housing a multi-million customer database, ensuring seamless data integration.• Mentored Junior Data Scientists: Guided a team of three data scientists, providing training and support to successfully deliver complex modeling projects.
EDUCATION
Northwestern University
Doctor of Philosophy (Ph.D.), Computational Mechanics
University of Tehran
Master of Science (M.Sc.)
Northwestern University - Kellogg School of Management
Certificate in Management for Scientists and Engineers
University of Tehran
Bachelor of Science (B.Sc.)
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