no code implementations • 8 May 2024 • Seoyoung Hong, Jeongwhan Choi, Yeon-Chang Lee, Srijan Kumar, Noseong Park
However, existing methods still have room to improve the trade-offs among accuracy, efficiency, and robustness.
1 code implementation • 25 Nov 2022 • Jeongwhan Choi, Seoyoung Hong, Noseong Park, Sung-Bae Cho
In particular, diffusion equations have been widely used for designing the core processing layer of GNNs, and therefore they are inevitably vulnerable to the notorious oversmoothing problem.
1 code implementation • 17 Nov 2022 • Jeongwhan Choi, Seoyoung Hong, Noseong Park, Sung-Bae Cho
Various methods have been proposed for collaborative filtering, ranging from matrix factorization to graph convolutional methods.
Ranked #1 on Collaborative Filtering on Gowalla
no code implementations • 8 Nov 2022 • Seoyoung Hong, Minju Jo, Seungji Kook, Jaeeun Jung, Hyowon Wi, Noseong Park, Sung-Bae Cho
We present a time-series forecasting-based upgrade kit (TimeKit), which works in the following way: it i) first decides a base collaborative filtering algorithm, ii) extracts user/item embedding vectors with the base algorithm from user-item interaction logs incrementally, e. g., every month, iii) trains our time-series forecasting model with the extracted time- series of embedding vectors, and then iv) forecasts the future embedding vectors and recommend with their dot-product scores owing to a recent breakthrough in processing complicated time- series data, i. e., neural controlled differential equations (NCDEs).
2 code implementations • 30 Aug 2022 • Seoyoung Hong, Heejoo Shin, Jeongwhan Choi, Noseong Park
Owing to the continuous and bijective characteristics of NODEs, in addition, we design a one-shot price optimization method given a pre-trained prediction model, which requires only one iteration to find the optimal solution.
1 code implementation • 4 Sep 2021 • Sheo Yon Jhin, Heejoo Shin, Seoyoung Hong, Solhee Park, Noseong Park
Neural networks inspired by differential equations have proliferated for the past several years.
no code implementations • 31 May 2021 • Duanshun Li, Jing Liu, Jinsung Jeon, Seoyoung Hong, Thai Le, Dongwon Lee, Noseong Park
On top of the prediction models, we define a budget-constrained flight frequency optimization problem to maximize the market influence over 2, 262 routes.