Tracking humans that are interacting with the other subjects or environment remains unsolved in visual tracking, because the visibility of the human of interests in videos is unknown and might vary over time. In particular, it is still difficult for state-of-the-art human trackers to recover complete human trajectories in crowded scenes with frequent human interactions. In this work, we conside...

PURPOSE To use functional MR imaging to compare brain activation during processing of languages in which multilingual volunteers are fluent with brain activation during processing of languages in which they are not fluent. METHODS Echoplanar images were obtained for five right-handed male multilingual subjects who performed a language task in three languages, one of which was a language in wh...

The following problem will be considered: from scattered examples on the behavior of a dynamic system induce a description of the system. For the induced description to be concise and modular, we use a generic action formalism based on causality, that is representable in logic programming. It is relatively simple to induce a description of a dynamic system that suffers from the frame problem. T...

In this study we examined the read speech of native and nonnative speakers with respect to pausing details of audible breathing, particularly in disfluent phases. 20 German and 20 French native speakers read the same narrative text in their native (L1) and in their non-native language (L2). Some expected results were confirmed: more frequent pauses and more frequent disfluencies in L2, as well ...

Chinese is a tone language. For a tone, the characters of its F0 pitch contours will be quite different in the condition of continuant speaking from the isolated speaking. The present researches about the Chinese tone are still centralized on the isolated speaking one, and about tone in fluent speech, there are some statements about the phenomenon of the two-word, threeword, four-word co-readin...

We propose a simple relaxation of Reiter’s basic action theories, based on fluents without successor state axioms, that accommodates incompleteness beyond the initial database. We prove that fundamental results about basic action theories can be fully recovered and that the generalized framework allows for natural specifications of various forms of incomplete causal laws. We illustrate this by ...

This paper describes a polynomially-solvable class of temporal planning problems. Polynomiality follows from two assumptions. Firstly, by supposing that each sub-goal fluent can be established by at most one action, we can quickly determine which actions are necessary in any plan. Secondly, the monotonicity of sub-goal fluents allows us to express planning as an instance of STP ≠ (Simple Tempor...

Acquiring information about its environment by sensing is a crucial ability of autonomous robots. Based on the established solution to the Frame Problem of the Fluent Calculus, we present a new, unifying formalism for representing and reasoning about sensing actions, knowledge preconditions, conditional actions, non-knowledge, and about what goals a robot can possibly achieve.

Research on information extraction (IE) seeks to distill relational tuples from natural language text, such as the contents of the WWW. Most IE work has focussed on identifying static facts, encoding them as binary relations. This is unfortunate, because the vast majority of facts are fluents, only holding true during an interval of time. It is less helpful to extract PresidentOf(Bill-Clinton, ...

Fluents are logical descriptions of situations that persist, and composite fluents are statistically significant temporal relationships (nearly identical with those in Allen’s temporal calculus) between fluents. This paper presents an algorithm for learning composite fluents incrementally. The algorithm is tested with a large dataset of mobile robot episodes. The algorithm is given no knowledge...