Search Results - subject:"Matrix factorization"

On the testability of the anchor-words assumption in topic models

Freyaldenhoven, Simon; Ke, Shikun; Li, Dingyi; Olea, … - 2025

Persistent link: https://www.econbiz.de/10015407032

Robust machine learning algorithms for text analysis

Ke, Shikun; Olea, José Luis Montiel; Nesbit, James - In: Quantitative economics : QE ; journal of the … 15 (2024) 4, pp. 939-970

We study the Latent Dirichlet Allocation model, a popular Bayesian algorithm for text analysis. We show that the model's parameters are not identified, which suggests that the choice of prior matters. We characterize the range of values that the posterior mean of a given functional of the...

Persistent link: https://www.econbiz.de/10015189767

Polynomial optimization : matrix factorization ranks, portfolio selection, and queueing theory

Steenkamp, Andries - 2023

Persistent link: https://www.econbiz.de/10014388473

Artificial Intelligence Algorithms for Collaborative Book Recommender Systems

Tegetmeier, Clemens; Johannssen, Arne; Chukhrova, Nataliya - In: Annals of Data Science 11 (2023) 5, pp. 1705-1739

run. In this paper, we consider AI algorithms for so called collaborative book recommender systems, especially the matrix … factorization algorithm using the stochastic gradient descent method and the book-based k -nearest-neighbor algorithm. We perform a …

Persistent link: https://www.econbiz.de/10015325532