Algorithms and Theory

Quant UX Con 2022 was the first ever general industry conference for Quantitative User Experience Researchers. When it was planned in the Fall of 2021, we expected to host an in-person, loosely structured “unconference” event for 150–200 people. By Spring 2022, registrations exceeded 2000 people and the organizing committee radically revised the format to be an online conference open to anyone,...

Recent works showed that implementations of Quicksort using vector CPU instructions can outperform the non-vectorized algorithms in widespread use. However, these implementations are typically single-threaded, implemented for a particular instruction set, and restricted to a small set of key types. We lift these three restrictions: our proposed vqsort algorithm integrates into the state-of-the-...

This paper presents the design and evaluation of SQP, a congestion control algorithm (CCA) for low-latency interactive video streaming applications like AR streaming and cloud gaming. SQP couples network measurements with frame transmissions, and responds to congestion primarily via modulation of the video bitrate. SQP’s tight integration with the traffic pattern of interactive video streaming...

Even though robot learning is often formulated in terms of discrete-time Markov decision processes (MDPs), physical robots require near-continuous multiscale feedback control. Machines operate on multiple asynchronous sensing modalities each with different frequencies, e.g., video frames at 30Hz, proprioceptive state at 100Hz, force-torque data at 500Hz, etc. While the classic approach is to...