116 citations · 590 across the 35 of their papers we have counts for
7 papers · 1 filter
Relative log-concavity and a pair of triangle inequalities
Yaming Yu
The relative log-concavity ordering between probability mass functions (pmf's) on non-negative integers is studied. Given three pmf's that satisfy $f\l…
Concave Renewal Functions Do Not Imply DFR Inter-Renewal Times
Yaming Yu
Brown (1980, 1981) proved that the renewal function is concave if the inter-renewal distribution is DFR (decreasing failure rate), and conjectured the converse. This note settles B…
On a Multiplicative Algorithm for Computing Bayesian D-optimal Designs
Yaming Yu
We use the minorization-maximization principle (Lange, Hunter and Yang 2000) to establish the monotonicity of a multiplicative algorithm for computing Bayesian D-optimal designs. T…
On the inclusion probabilities in some unequal probability sampling plans without replacement
Yaming Yu
Comparison results are obtained for the inclusion probabilities in some unequal probability sampling plans without replacement. For either successive sampling or Hájek's rejective…
Improved EM for Mixture Proportions with Applications to Nonparametric ML Estimation for Censored Data
Yaming Yu
Improved EM strategies, based on the idea of efficient data augmentation (Meng and van Dyk 1997, 1998), are presented for ML estimation of mixture proportions. The resulting algori…
Strict Monotonicity and Convergence Rate of Titterington's Algorithm for Computing D-optimal Designs
Yaming Yu
We study a class of multiplicative algorithms introduced by Silvey et al. (1978) for computing D-optimal designs. Strict monotonicity is established for a variant considered by Tit…