Almost all work in automatic facial expression analysis has focused on recognition of prototypic expressions rather than dynamic changes in appearance over time. To investigate the relative contribution of dynamic features to expression recognition, we used automatic feature tracking to measure the relation between amplitude and duration of smile onsets in spontaneous and deliberate smiles of 8...

World Wide Web Consortium has specified Synchronized Multimedia Language (SMIL), which is intended to bring multimedia into World Wide Web. The most popular browsers still don’t support SMIL in its full, which slows down the utilization of SMIL. In this paper, we describe our implementation of a SMIL 1.0 player. The player is part of our X-Smiles browser, which is an open source XML browser.

Pharmacophore models play an essential role in drug discovery. Generating pharmacophore models which encode accurate molecular recognition features are highly dependent on properly defined annotations. Simplistic or ill-defined pharmacophore annotations which do not capture subtle electronic or geometric effects lead to many inaccuracies. SMARTS patterns which are often used to specify annotati...

We present a generative model for spontaneous smiles that preserves their dynamics and can thus be used to generate genuine animations. We use a high-resolution motion capture dataset of spontaneous smiles to represent the accurate temporal information present in spontaneous smiles. The smile model consists of data-driven interpolation functions generated from a Principal Component Analysis mod...

We derive sharp bounds for the prices of VIX futures using the full information of S&P 500 smiles. To that end, we formulate the model-free sub/superreplication of the VIX by trading in the S&P 500 and its vanilla options as well as the forward-starting log-contracts. A dual problem of minimizing/maximizing certain risk-neutral expectations is introduced and shown to yield the same value. The c...

We investigate the interaction of volatility smiles and liquidity in the euro (€) interest rate option markets, using an extensive data-set on daily bid and ask prices of interest rate caps and floors. We find that, in this market, the implied volatility smiles are asymmetric, and are steeper on the ask-side. Liquidity variables have significant explanatory power for both curvature and asymmetr...

As system complexity grows, cycle-accurate simulation experiments become inordinately time consuming. Most approaches to accelerating architectural simulation model only portions of an application in detail. Detailed simulation begins with architectural state from earlier portions of the execution. Constructing this requires fast-forwarding: modeling effects of earlier instructions without mode...

Motor resonance processes are involved both in language comprehension and in affect perception. Therefore we predict that listeners understand spoken affective words slower, if the phonetic form of a word is incongruent with its affective meaning. A language comprehension study involving an interference paradigm confirmed this prediction. This interference suggests that affective phonetic cues ...