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In this paper we propose a utility model that accounts for both sales and branding advertisers. We first study the computational complexity of optimization problems related to both online and offline allocation of display advertisements. Next, we focus on a particular instance of the online allocation problem, and design a simple online algorithm with(More)
A trend that has materialized, and has given rise to much attention, is of the increasingly heterogeneous computing platforms. Presently, it has become very common for a desktop or a notebook computer to come equipped with both a multi-core CPU and a GPU. Capitalizing on the maximum computational power of such architectures (i.e., by simultaneously(More)
Tensor contractions are generalized multidimensional matrix multiplication operations that widely occur in quantum chemistry. Efficient execution of tensor contractions on Graphics Processing Units (GPUs) requires several challenges to be addressed, including index permutation and small dimension-sizes reducing thread block utilization. Moreover, to apply(More)
INTRODUCTION Recent data have shown that plasmakinetic enucleation of the prostate (PKEP) is a novel and effective procedure for symptomatic benign prostatic hyperplasia (BPH); however, data on patient sexual function after PKEP remain scarce. AIMS This study aims to evaluate the impact of PKEP on sexual function in men with lower urinary tract symptoms(More)
Understanding the distribution pattern and maintenance mechanism of species diversity along environmental gradients is essential for developing biodiversity conservation strategies under environmental change. We have surveyed the species diversity at 192 vegetation sites across different steppe zones in Inner Mongolia, China. We analysed the total species(More)
Motivated by the problem of optimizing allocation in guaranteed display advertising, we develop an efficient, lightweight method of generating a compact <i>allocation plan</i> that can be used to guide ad server decisions. The plan itself uses just <i>O</i>(1) state per guaranteed contract, is robust to noise, and allows us to serve (provably) nearly(More)
We consider the problem of pricing guaranteed contracts in online display advertising. This problem has two key characteristics that when taken together distinguish it from related offline and online pricing problems: (1) the guaranteed contracts are sold months in advance, and at various points in time, and (2) the inventory that is sold to guaranteed(More)
Tensor contractions are generalized multidimensional matrix multiplication operations that widely occur in quantum chemistry. Efficient execution of tensor contractions on GPUs requires tackling several challenges to be addressed, including index permutation and small dimension-sizes reducing thread block utilization. In this paper, we present our approach(More)