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Personalized Thread Recommendation for MOOC Discussion Forums
Andrew S. Lan, Jonathan C. Spencer, Ziqi Chen +2
Social learning, i.e., students learning from each other through social interactions, has the potential to significantly scale up instruction in online education. In many cases, su…
An Estimation and Analysis Framework for the Rasch Model
Andrew S. Lan, Mung Chiang, Christoph Studer
The Rasch model is widely used for item response analysis in applications ranging from recommender systems to psychology, education, and finance. While a number of estimators have…
Linear Spectral Estimators and an Application to Phase Retrieval
Ramina Ghods, Andrew S. Lan, Tom Goldstein +1
Phase retrieval refers to the problem of recovering real- or complex-valued vectors from magnitude measurements. The best-known algorithms for this problem are iterative in nature…
PhaseLin: Linear Phase Retrieval
Ramina Ghods, Andrew S. Lan, Tom Goldstein +1
Phase retrieval deals with the recovery of complex- or real-valued signals from magnitude measurements. As shown recently, the method PhaseMax enables phase retrieval via convex op…
Linearized Binary Regression
Andrew S. Lan, Mung Chiang, Christoph Studer
Probit regression was first proposed by Bliss in 1934 to study mortality rates of insects. Since then, an extensive body of work has analyzed and used probit or related binary regr…