Abstract: Methods, computer systems, and computer-readable media for accelerating a learning-to-rank algorithm using a central processing unit (CPU) and a graphics processing unit (GPU) are provided. The GPU processes document pairs created by the CPU in parallel to generate a lambda-gradient value and a weight for each document. The CPU builds a regression tree for the documents. The GPU is utilized to accelerate this process by constructing histograms of feature values, wherein the address of bins collecting the same feature value are shifted during the construction of the histogram. The output of the regression tree is a score for each document which is used to rank or order the document on a search engine results page.

Abstract: A method and device for delivering therapeutic agents to the cervix. The method utilizes a diaphragm with an electrically conductive surface that is placed atraumatically over the outer surface and inner os of the mammalian (animal or human) cervix. The agent is delivered to the diaphragm after which the conductive surface of the diaphragm may be charged by a power source to deliver a electrophoretic field to force the agent deep into cervical tissue and cells. The diaphragm may be used with or without the aid of external or internal leads. A unique intrauterine lead designed in this patent may also be used with the diaphragm to enhance delivery of therapeutic agents.