Samrat Halder work email
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Samrat Halder personal email
Samrat is currently working with the GenAI group at Expedia focusing on the applications of GenAI in Recs and traveler content. Previously, he had worked in Trust & Safety, Fraud detection for 3 years. He has also worked in algorithmic trading for 2 years and marketing data science during his internship with Amazon. Samrat has gained over 6 years of experience working in data science across multiple business domains. He enjoys generating tangible business value by leveraging AI/ML. Outside work, he loves spending time with his dog, Luna!• Key Skills: NLP, GenAI, LLMs, Fraud & Risk, Trust & Safety, Marketing Science
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Machine Learning Scientist IiiExpedia Group Jun 2024 - PresentSeattle, Wa, UsTraveler Voice and Content (LLMs, GenAI in Recs) -
Machine Learning Scientist IiiExpedia Group Oct 2022 - Jun 2024Seattle, Wa, UsMarketplace Trust & Safety, Squad Lead
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Machine Learning Scientist IiExpedia Group Feb 2021 - Sep 2022Seattle, Wa, UsFraud & Risk• Booking• Supply
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Nlp CapstoneBloomberg Lp Sep 2020 - Dec 2020New York, Ny, UsWe find in our multi-tasking neural model for learning psycholinguistic aspect of language, SRLs play a big part; surprisingly, random embeddings with tuning do as good as GloVe, and more data do not necessarily yield better results. We publish our new SotA results on thematic fit tasks at BlackBoxNLP (EMNLP 2022). -
Data Science Fall InternAudible Sep 2020 - Dec 2020Newark, Nj, UsBuilt a customer targeting model combining multi-arm bandit and xgboost which resulted in 0.8% improvement in CTR for email campaign of Audible plus and premium -
Data Science Summer InternAudible Jun 2020 - Aug 2020Newark, Nj, Us• Did research on data science models used by practitioners for marketing campaigns to optimize customer targeting, and acquisition leveraging gradient boosting trees, lift model, contextual bandit• Tech-stack used include AWS (Sagemaker, Step Function, s3), Alation, PySpark, SQL
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Department Research AssistantColumbia Business School Oct 2019 - Dec 2020New York, Ny, UsWorked with Dr. Simona Abis on multiple projects that involved applied ML, and NLP to understand and quantify the impact of Artificial Intelligence in the changing economics of knowledge production -
Covid-19 H.E.L.P ProjectAuquan May 2020 - Jun 2020London, -, Gb• Collaborated on an open-source data science project to analyze various virus and economic models and come up with possible country-specific lockdown exit strategies post COVID-19 pandemic that minimizes the impact of health and economic loss• Research Area: Disease models, multi-objective optimization -
Department RepresentativeEngineering Graduate Student Council At Columbia Engineering Sep 2019 - May 2020Liaison between Engineering Graduate Student Council (EGSC) and Data Science Institute Student Council (DSISC) -
Graduate Teaching AssistantColumbia | Sipa Sep 2019 - Dec 2019New York, Ny, UsLed weekly programming classes, held recitation sessions, and graded assignments for a graduate-level Python programming course -
Lead Data ScientistOptirisk Systems Feb 2019 - Jul 2019London, Middlesex, Gb• Supervised a team of analysts based in New Delhi, IN • Spearheaded technical and analytic support to 2 clients in India for end-to-end integration of API, automated order execution, and live fund management worth USD 1M -
Data ScientistOptirisk Systems Jan 2018 - Jan 2019London, Middlesex, Gb• Advisor and CEO: Professor Gautam Mitra (https://en.m.wikipedia.org/wiki/Gautam_Mitra)• Worked on multiple R&D projects which include machine learning, large-scale portfolio analytics which improved volatility and return on our index funds• Managed a summer intern for enhancing trade signals by including news sentiment-based signals
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Stochastic Optimization BootcampUcl Mar 2018 - Mar 2018London, Greater London, GbWorkshop on stochastic optimization and integer programing organized by OptiRisk Systems and AMPLDev -
Analyst - Quantitative ResearchMotilal Oswal Financial Services Ltd Jul 2017 - Dec 2017Mumbai, Maharashtra, In• Developed POCs on AWS (Amazon Web Services- Kinesis, Lambda, SQS, Cloudwatch, Dynamo DB), End to end automation of several tasks, Data cleaning• Research Area: Volatility smile, Option pricing, Deep learning -
Data Science InternCpc Analytics May 2017 - Jun 2017Berlin, De• Built a model using LDA (topic modeling) and sentiment analysis with Tweets on interest rates to get Hawkish- Dovish sentiment about the market• Built a Structural Vector Autoregression model to estimate the impact of market sentiment on asset prices • Developed a Shiny Dashboard to monitor near real-time sentiment on political parties from rss feeds -
Investment Research ConferenceIndonesia Capital Market Student Studies (Icmss) Feb 2017 - Feb 2017• Selected among the top 6 investment teams among 24 teams in the final round• Presented our valuation of Reliance Industries based on dividend discount and price multiple methods at the Universitas of Indonesia, Jakarta -
Visiting Student Research Program FellowTata Institute Of Fundamental Research, Mumbai May 2014 - Aug 2015• Advisor: Dr. Shravan Hanasoge • Published paper: Finite-frequency Sensitivity Kernels in Spherical Geometry for Time–Distance Helioseismology• Research Area: Computational astrophysics & astronomy, Numerical Methods, Parallel Programming, Solar Kernels, Time-Distance Helioseismology, Boundary value problems, PDE's -
Summer TraineeHomi Bhabha Centre For Science Education (Hbcse), Tifr Jun 2013 - Jun 2013Mumbai, Maharashtra, InNational Initiative on Undergraduate Science (NIUS) Camp - Selected among 45 freshmen students in Science and Engineering across the country for a summer camp on advanced scientific computing
Samrat Halder Skills
Samrat Halder Education Details
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Columbia UniversityData Science -
Indian Institute Of Technology, KharagpurFinancial Engineering
Frequently Asked Questions about Samrat Halder
What company does Samrat Halder work for?
Samrat Halder works for Expedia Group
What is Samrat Halder's role at the current company?
Samrat Halder's current role is GenAI @Expedia | Columbia | IITKGP.
What is Samrat Halder's email address?
Samrat Halder's email address is sh****@****ble.com
What schools did Samrat Halder attend?
Samrat Halder attended Columbia University, Indian Institute Of Technology, Kharagpur.
What are some of Samrat Halder's interests?
Samrat Halder has interest in Economic Empowerment, Education, Environment, Science And Technology, Human Rights, Animal Welfare.
What skills is Samrat Halder known for?
Samrat Halder has skills like Matlab, C, R, Python, Microsoft Excel, Sql, Natural Language Processing, Machine Learning, Analytics, Financial Modeling, Statistical Modeling, Portfolio Management.
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