Xiaoyu Ge

Learn More
The ever increasing supply of data is bringing a renewed attention to query personalization. Query personalization is a technique that utilizes user preferences with the goal of providing relevant results to the users. Along with preferences, diversity is another important aspect of query personalization especially useful during data exploration. The goal(More)
In hard disk drives (HDDs), head skew error among multiple heads is calibrated during manufacturing process, and will be implemented prior to head switching seeks. In operational environment, additional head skew deviation due to temperature drift may be observed, which could introduce heavy handling burden for feedback controller along with unacceptable(More)
Many current computer vision approaches for object detection can only detect objects that have been learned in advance. In this paper, we present a method that uses qualitative stability analysis to infer the existence of unknown objects in certain areas of the images based on gravity and stability of already detected objects. Our method recursively(More)
A TTL-controlled trigger generator based on pulse transformer and peaking switch is constructed in this paper. The trigger system is composed of two units, which the trigger signal is amplified step-by-step from 5V TTL to 100kV. A dry-type pulse transformer with a winding ratio of 4 is presented. A self-breakdown peaking switch is used to shorten the(More)