Bootstrap 기우리가 모집단에 대한 분포를 모르고(모집단이 정규분포인지 모르거나), 이에 더해서 샘플 사이즈가 너무 작아서 CLT를 적용할 수 없다면, 부트스트랩을 사용해서 분포를 근사하게 추정해볼 수 있다.Jul 24, 2022Jul 24, 2022
LDA(latent Dirichlet association) for non-statisticians.It is hard to understand from the beginning. I found a good source to study and here I retranslate into a further easier version of the…Mar 7, 2021Mar 7, 2021
Managing Data Science SnippetsThis is a learning experience from my internal data snippet project.Dec 9, 2020Dec 9, 2020
MLOps for Data Science beginnersIt is not easy for Data Scientist to understand the concept of Ops at first. I was too. I even haven’t heard of DevOps when I first…Dec 5, 2020Dec 5, 2020
Spatio-Temporal Analysis — RidershipThis article is a short review of the paper “Spatio-temporal analysis of rail station ridership determinants in the built environment…Sep 30, 2020Sep 30, 2020
Interview questions that I couldn’t answer(Part2)This time, interview was a data scientist position from mobility platform who should build a spatial-temporal regression model combined…Aug 30, 2020Aug 30, 2020
Interview questions that I couldn’t answer (Part1)An interview is another way of progress. As soon as I thought I was the right person to that company, they tackled the problem that I am…Aug 14, 2020Aug 14, 2020
AWS DeepAR algorithmIt is interesting algorithm that it is a deep learning algorithm incorporating likelihood function.May 9, 2020May 9, 2020
AWS file saving API playbookWhatever produced in AWS goes in S3(Simple Storage Service).Mar 31, 2020Mar 31, 2020
AWS Rekognition custom labels + AugmentationAWS new AI service Rekognition Custom Labels is quite amazing. There are GCP AutoML Vsion, Azure Custom Vision services for public cloud…Mar 29, 2020Mar 29, 2020
