Andrew Silva

About Andrew Silva

Data Scientist and PhD Economist with 12+ years experience in causal inference statistics…

Experience

1. Machine Learning Mentor

   The Erdős Institute

   Jan 2025 — Present

   Machine learning models, including-Classification (logistic regression, LDA, QDA, Naive Bayes, KNN)-Ensemble methods (regularization, Lasso, Ridge, ElasticNet, bagging, boosting)-Dimensionality reduction (PCA, PLS)-Decision trees, random forests-Neural networks (CNN, LSTM, RNN)-Cross validation, bootstrapping-Unsupervised learning (k-means, hierarchical clustering)NLP neural network model using text reviews to predict star rating classification-Data from Google Local entity reviews-Logistic model using bag-of-words encoding-Bi-directional LSTM model, custom embedding layer-Bi-directional LSTM model, GloVe 6b embedding layer-BERT, with pre-trained frozen and unfrozen weights-RoBERTa, pre-trained weights on review sentiment-Best model attained 92% accuracy for 5-level classification using 1% of available data

Education

• University of California, Davis

  B.S.

• National University of Singapore

  Visiting Researcher

• Geneva Graduate Institute

  Ph.D.

• University of California, Davis

  B.A.

• Graduate Institute of International and Development Studies

  M.Sc.