Résumé : L’apprentissage par renforcement bayésien basé modèle (BRL) permet une formalisation saine du problème consistant à agir optimalement face à un environnement inconnu, c’est-à-dire en évitant le dilemme exploration-exploitation. Toutefois, les algorithmes s’attaquant explicitement au BRL souffrent d’une telle explosion combinatoire qu’un grand nombre de travaux repose sur des algorithme...

We describe the IBM automatic speech recognition (ASR) system for the DARPA Broad Operational Language Translation (BOLT) program. The system is used to transcribe conversational telephone speech (CTS) prior to machine translation for Phase 3 of the program’s Activity A. The ASR system is a combination of novel sequence trained ensemble deep neural network acoustic models on speaker adapted fea...

The DARPA BOLT Program develops systems capable of allowing English speakers to retrieve and understand information from informal foreign language sources. Phase 2 of the program required large volumes of naturally occurring informal text (SMS) and chat messages from individual users in multiple languages to support evaluation of machine translation systems. We describe the design and implement...

Sensors play an important role in providing feedback to robotic control systems. Vision can be an eeective sensing modality due to its speed, low cost, and ex-ibility. It can also serve as an external sensor that can provide control information for devices that lack internal sensing. Many robot grippers do not have internal sensors. These grippers can be prone to error as they operate under ope...

This paper presents the development of the 2014 Cambridge University conversational telephone Mandarin Chinese LVCSR system for the DARPA BOLT speech translation evaluation. A range of advanced modelling techniques were employed to both improve the recognition performance and provide a suitable integration with the translation system. These include an improved system combination technique using...

The Smooth Impact Drive Mechanism (SIDM) is a linear piezoelectric actuator that has seen practically applied to camera lens modules. Although previous SIDM actuators are easily miniaturized and enable accurate positioning, these actuators cannot actuate at high speed and cannot provide powerful driving because they are driven at an off-resonant frequency using a soft-type PZT. In the present s...

Post-operative trochanteric bursitis is a known complication secondary to the surgical approach in total hip arthroplasty. This phenomenon may be partially attributable to repetitive microtrauma generated when soft tissues rub against implanted hardware. Significant rates of post-operative trochanteric bursitis have been observed following procedures in which a trochanteric fixation device, suc...

BACKGROUND We investigated the use of a simple novel nut and bolt task in premanifest and manifest Huntington's disease (HD) patients to detect and quantify motor impairments at all stages of the disease. METHODS Premanifest HD (n=24), manifest HD (n=27) and control (n=32) participants were asked to screw a nut onto a bolt in one direction, using three different sized bolts with their left an...