Fuzzy ARTMAP is compared to a classifier system (CS) called PASS (predictive adaptive sequential system). Previously reported results in a benchmark classification task suggest that Fuzzy ARTMAP systems perform better and are more parsimonious than systems based on the CS architecture. The tasks considered here differ from ordinary classificatory tasks in the amount of output uncertainty associ...

This paper introduces iAutoMotion, an autonomous video retrieval system that requires only minimal user input. It is based on the video retrieval engine IMOTION. iAutoMotion uses a camera to capture the input for both visual and textual queries and performs query composition, retrieval, and result submission autonomously. For the visual tasks, it uses various visual features applied to the capt...

Several computer based tools have been developed to support cooperative work. The majority of these tools rely on the traditional input devices available on standard computer systems, i.e. keyboard and mouse. This paper focuses on the use of gestural interaction for cooperative scenarios, discussing how it is more suited for some tasks, and hypothesizing on how users cooperatively decide on whi...

This paper describes algorithms for scheduling preemptive, imprecise, composite tasks in real-time. Each composite task consists of a chain of component tasks, and each component task is made up of a mandatory part and an optional part. Whenever a component task uses imprecise input, the processing times of its mandatory and optional parts may become larger. The composite tasks are scheduled by...

Navigating through online documents has become an increasingly common HCI task. This paper investigates alternative methods to improve user performance for browsing World Wide Web and other documents. In a task that involved both scrolling and pointing, we compared three input methods against the status-quo. The results showed that a mouse with a finger wheel did not improve user’s performance;...

The manipulation of three dimensional (3D) objects is a task frequently needed in different computer applications, especially in the context of computeraided design (CAD). In a typical desktop computing environment the user however has no direct access to the 3D-object, and it has to be controlled and manipulated using interaction mechanisms with a limited number of degrees of freedom (DoFs). M...

In patterning discriminations, animals have to differentiate a compound stimulus AB from each of its elements A and B. In positive patterning (PP), the compound is reinforced whilst the single elements are non-reinforced. In negative patterning (NP), single elements are reinforced whilst the compound is non-reinforced. Using olfactory conditioning of the proboscis extension response (PER), we a...

Predictive models for human performance, such as Fitts’ Law [2] and the Steering Law [1], are useful tools for developers of interactive applications because they help guide us toward effective and efficient interface designs. In this poster, we present a mathematical model in this style that is meant to characterize performance in precise, continuous 3D input tasks, such as making an exact tra...

The physics of human activities recently has been studied in the view point that they are dynamic processes of a complex system. The studies reveal that the human activities have bursty nature – occasional abrupt bursts of activity level for short periods of time, along with long periods of inactivity. Quantitative studies show that the distribution of the time, τ , between two consecutive acti...

SEAFACT (Semantic Analysis For the Animation of Cooking Tasks) is a natural language interface to a computer-generated animation system operating in the domain of cooking tasks. SEAFACT allows the user to specify cooking tasks "using a small subset of English. The system analyzes English input and produces a representation of the task which can drive motion synthesis procedures. Tl~is paper des...