Junior Koch Email and Phone Number
As a seasoned professional in the field of data science, I currently hold the position of Principal Machine Learning Scientist and Data Scientist at Elo7 and enjoei. Here's a glimpse of my significant contributions and accomplishments:- Innovated non-conventional ranking models (Learn to Rank) for our search engines, resulting in a remarkable 10% boost in search revenue.- Spearheaded efforts to enhance Elo7's confidence and rigor in online experimentation (AB testing) by conducting seminars for cross-functional teams, including engineering and product.- Developed an intuitive application leveraging the bootstrap method, allowing teams to seamlessly perform hypothesis testing for online experiments.- Employed Large Language Models (LLM) and Vision Transformers (ViT) to create a recommendation module that improved user experience and engagement.- Pioneered the development of an application that enhances the interpretability of our search engines, utilizing Convolutional Neural Networks (CNN) and Long Short-Term Memory (LSTM) for text data with the utilization of Integrated Gradients.- Employed extensive Shapley Values to improve interpretability in the context of search engines and user intent.- Combined the power of Shapley Values with Generative Adversarial Networks (GANs) to create product purchase explanations.- Engineered a solution based on feature extraction with topic modeling (LDA, NMF, and SVD) to bridge the semantic gap between product supply and user demand at Elo7.- Designed and implemented a complex pipeline for product classification, harnessing techniques like semantic graphs, BM25 similarity, and Bayesian Optimization.- Contributed to the development of recommender systems, employing collaborative filtering, content-based, and hybrid approaches.I hold a Ph.D. in Materials Science and Engineering from Universidade Federal de Santa Catarina, and I previously worked as a Post-Doctoral researcher in Quantum Gravity at Universidade do Estado de Santa Catarina. Before transitioning to the data science field, I enjoyed a fulfilling career as a professor for five years.My professional interests encompass a deep passion for all things related to machine learning and artificial intelligence. I have a profound appreciation for mathematics and enjoy sharing my knowledge through teaching and continuous learning.Feel free to reach out if you'd like to connect or explore potential collaborations in the exciting realm of data science and AI.
Mercado Livre
View- Website:
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- Employees:
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Data Science Technical LeaderMercado Livre Apr 2024 - PresentSão Paulo, Brasil -
Principal Data Scientist @ Elo7Elo7 Oct 2020 - Feb 2024São Paulo, Brazil -
Lead Data Scientist @ Elo7Elo7 Jan 2019 - Oct 2020São PauloAtualmente integro do time de Ciência de dados no Elo7, onde pesquisamos e desenvolvemos:- Algoritmos de Machine learning para Processamento de Linguagem Natural (NLP)- Sistemas de recomendação utilizando abordagem de filtros colaborativos, baseada em conteúdo ou uma híbrida.- Modelos Explicativos para machine learning como os baseados em valores de Shapley- Análise de séries temporais para detecção de anomalias- Otimização de propósito geral seja com Machine Learning / Deep Learning ou Programação Linear / Inteira- Testes A/B -
RedatorDeviante Oct 2018 - Mar 2022Atuei como redator voluntário no portal de divulgação científica, Deviante. Escrevo textos sobre Física, Matemática e Machine Learning.
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Postdoctoral ResearcherUniversidade Do Estado De Santa Catarina Mar 2018 - Mar 2019Joinville Area, BrazilWe are built a quantum theory of gravity using the 2-Spinor formalism, De Rham wave operator and the theory of propagators. -
Collaborative Researcher (Machine Learning) At Universidade Federal De Santa CatarinaUniversidade Federal De Santa Catarina Sep 2018 - Dec 2018FlorianópolisMachine Learning methods applied to Bioinformatics. -
Professor AdjuntoCentro Universitário - Católica De Santa Catarina Feb 2015 - Feb 2018Jaraguá Do Sul E Região, BrasilProfessor de disciplinas de Física I, II e III, Óptica, Cálculo I, II, III e IV, Física Computacional, Medidas Físicas e Física Experimental, Vibrações, Pesquisa Operacional I e II. Orientador de estágios, trabalhos de conclusão de curso e projetos de pesquisa.
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Assistant ProfessorUniversidade Federal De Santa Catarina Aug 2013 - Jan 2015FlorianópolisProfessor substituto do Departamento de Física -
Professor SubstitutoUniversidade Federal De Santa Catarina - Ufsc 2013 - Jan 2015
Junior Koch Skills
Junior Koch Education Details
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Ciências Dos Materiais -
Mestre Em Ciência E Engenharia De Materiais -
Bacharel Em Física
Frequently Asked Questions about Junior Koch
What company does Junior Koch work for?
Junior Koch works for Mercado Livre
What is Junior Koch's role at the current company?
Junior Koch's current role is Principal Data Scientist and Machine Learning Scientist at Elo7.
What schools did Junior Koch attend?
Junior Koch attended Universidade Federal De Santa Catarina, Universidade Federal De Santa Catarina, Universidade Federal De Santa Catarina.
What are some of Junior Koch's interests?
Junior Koch has interest in Working Out, Ios App Store, Harry Potter, Martial Arts, Jquery, Muay Thai, Final Fantasy Vii, Gmail, The Lord Of The Rings, Deadpool (Marvel Character).
What skills is Junior Koch known for?
Junior Koch has skills like Matlab, Python, Microsoft Office, Latex, Keras, Tensorflow, Pesquisa, Microsoft Word, Microsoft Excel, General Relativity, Machine Learning, Linux.
Who are Junior Koch's colleagues?
Junior Koch's colleagues are Fernando Bianchi, Israel Solha, Odilon Luiz, Stephanie Porto, Camille Corrêa, Micaele Aparecida, Ana Luiza Silva Dos Santos.
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