Search Results for author: Young-Jin Park

Found 17 papers, 3 papers with code

A Scalable and Transferable Time Series Prediction Framework for Demand Forecasting

no code implementations29 Feb 2024 Young-Jin Park, Donghyun Kim, Frédéric Odermatt, Juho Lee, Kyung-Min Kim

Time series forecasting is one of the most essential and ubiquitous tasks in many business problems, including demand forecasting and logistics optimization.

Time Series Time Series Forecasting +1

Representation Reliability and Its Impact on Downstream Tasks

no code implementations31 May 2023 Young-Jin Park, Hao Wang, Shervin Ardeshir, Navid Azizan

Self-supervised pre-trained models extract general-purpose representations from data, and quantifying how reliable they are is crucial because many downstream models use these representations as input for their own tasks.

Uncertainty Quantification

VQ-AR: Vector Quantized Autoregressive Probabilistic Time Series Forecasting

no code implementations31 May 2022 Kashif Rasul, Young-Jin Park, Max Nihlén Ramström, Kyung-Min Kim

Time series models aim for accurate predictions of the future given the past, where the forecasts are used for important downstream tasks like business decision making.

Decision Making Inductive Bias +3

Assumption-Free Survival Analysis Under Local Smoothness Prior

no code implementations29 Sep 2021 Seungjae Jung, Min-Kyu Kim, Juho Lee, Young-Jin Park, Nahyeon Park, Kyung-Min Kim

Survival analysis appears in various fields such as medicine, economics, engineering, and business.

Survival Analysis

Global-Local Item Embedding for Temporal Set Prediction

no code implementations5 Sep 2021 Seungjae Jung, Young-Jin Park, Jisu Jeong, Kyung-Min Kim, Hiun Kim, Minkyu Kim, Hanock Kwak

Temporal set prediction is becoming increasingly important as many companies employ recommender systems in their online businesses, e. g., personalized purchase prediction of shopping baskets.

Recommendation Systems

One4all User Representation for Recommender Systems in E-commerce

no code implementations24 May 2021 Kyuyong Shin, Hanock Kwak, Kyung-Min Kim, Minkyu Kim, Young-Jin Park, Jisu Jeong, Seungjae Jung

General-purpose representation learning through large-scale pre-training has shown promising results in the various machine learning fields.

Computational Efficiency Recommendation Systems +2

div2vec: Diversity-Emphasized Node Embedding

no code implementations21 Sep 2020 Jisu Jeong, Jeong-Min Yun, Hongi Keam, Young-Jin Park, Zimin Park, Junki Cho

Recently, the interest of graph representation learning has been rapidly increasing in recommender systems.

Graph Representation Learning Recommendation Systems

Multi-Manifold Learning for Large-scale Targeted Advertising System

no code implementations5 Jul 2020 Kyuyong Shin, Young-Jin Park, Kyung-Min Kim, Sunyoung Kwon

The key to the success of precise user targeting lies in learning the accurate user and ad representation in the embedding space.

Recommendation Systems Representation Learning

Hop Sampling: A Simple Regularized Graph Learning for Non-Stationary Environments

no code implementations26 Jun 2020 Young-Jin Park, Kyuyong Shin, Kyung-Min Kim

The hop sampling randomly selects the number of propagation steps rather than fixing it, and by doing so, it encourages the model to learn meaningful node representation for all intermediate propagation layers and to experience a variety of plausible graphs that are not in the training set.

Graph Learning Graph Representation Learning +1

Learning to Reason: Distilling Hierarchy via Self-Supervision and Reinforcement Learning

no code implementations25 Sep 2019 Jung-Su Ha, Young-Jin Park, Hyeok-Joo Chae, Soon-Seo Park, Han-Lim Choi

We present a hierarchical planning and control framework that enables an agent to perform various tasks and adapt to a new task flexibly.

reinforcement-learning Reinforcement Learning (RL)

Adaptive Path-Integral Autoencoders: Representation Learning and Planning for Dynamical Systems

no code implementations NeurIPS 2018 Jung-Su Ha, Young-Jin Park, Hyeok-Joo Chae, Soon-Seo Park, Han-Lim Choi

We present a representation learning algorithm that learns a low-dimensional latent dynamical system from high-dimensional sequential raw data, e. g., video.

Representation Learning Variational Inference

InfoSSM: Interpretable Unsupervised Learning of Nonparametric State-Space Model for Multi-modal Dynamics

1 code implementation19 Sep 2018 Young-Jin Park, Han-Lim Choi

To resolve the challenge, this paper proposes a framework using multiple GP transition models which is capable of describing multi-modal dynamics.

Time Series Time Series Analysis

Adaptive Path-Integral Autoencoder: Representation Learning and Planning for Dynamical Systems

2 code implementations5 Jul 2018 Jung-Su Ha, Young-Jin Park, Hyeok-Joo Chae, Soon-Seo Park, Han-Lim Choi

We present a representation learning algorithm that learns a low-dimensional latent dynamical system from high-dimensional \textit{sequential} raw data, e. g., video.

Representation Learning Variational Inference

Deep Gaussian Process-Based Bayesian Inference for Contaminant Source Localization

1 code implementation21 Jun 2018 Young-Jin Park, Piyush M. Tagade, Han-Lim Choi

This paper proposes a Bayesian framework for localization of multiple sources in the event of accidental hazardous contaminant release.

Applications

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