We present OASSIS (for Ontology ASSISted crowd mining), a prototype system which allows users to declaratively specify their information needs, and mines the crowd for answers. The answers that the system computes are concise and relevant, and represent frequent, significant data patterns. The system is based on (1) a generic model that captures both ontological knowledge, as well as the indivi...

In the present paper we argue that the effectiveness of interventions/design solutions supporting emergency evacuation of crowds in socio-technical systems, depends on the appropriateness of the models used for the crowd behaviour. After reviewing basic approaches already used to model escaping crowds, the knowledge about crowd behaviour provided by modern social psychology is briefly presented...

Prior literature has indicated a remarkable change in the role of the crowd. Gradually, the crowd, in the process of interacting with firms, is no longer limited to providing demand information alone; rather, the crowd sometimes start participating either partially or fully in product innovation. Such change is based on an underlying assumption that the crowd (or customers) would provide creati...

Identifying the terror attack, illegal public gathering or other mass events risks by utilizing cameras is an important concern both in crowd security area and in pattern recognition research area. This paper provides a physical entropy model to measure the crowd security level. The entropy model was created by identifying individuals’ moving velocity and the related probability. The individual...

We present a novel automated technique for the quantitative validation and comparison of multi-agent based crowd egress simulation systems. Despite much progress in the simulation technology itself, little attention has been accorded to the problem of validating these systems against reality. Previous approaches focused on local (spatial or temporal) crowd patterns, and either resorted to visua...

This paper proposes that the “value” of a crowd can be defined in terms of the overall engagement of the individuals within the crowd and that engagement is a function of certain characteristics of the crowds such as small world-ness, sparsity and connectedness. Engagement is hypothesized as messages being exchanged over the complex network which represents the crowd and the “value” is calculat...

Crowd evacuation from industrial buildings, factories, theatres, protest areas, festivals, exhibitions and religious/sports gatherings is very crucial in many dangerous scenarios, such as fire, earthquakes, threat and attacks. Simulation of crowd evacuation is an integral part of planning for emergency situations and training staff for crow management. In this paper, simulation of crowd evacuat...

Does the Home Advantage Depend on Crowd Support? Evidence from Same-Stadium Derbies We investigate to what extent crowd support contributes to the home advantage in soccer, disentangling this effect from other mechanisms such as players’ familiarity with the stadium and travel fatigue. To evaluate the relevance of crowd support in determining home advantage we analyze same-stadium derbies (matc...

Study of Crowd dynamics has had significant overlaps with models of biological swarms. Understanding and directing human crowds have also been of long-standing interest. In this paper, we describe a few basic cognitive processes that account for life cycle of typical human crowds. Individuals change their behavior with stimulants that attract a crowd. A crowd remains in place and behaves as a c...

Crowd modeling and simulation (M&S) has been used to support the analysis of the behavior of crowds, in order to predict the impact of pedestrian movement and to test design alternatives. In recent years, crowd M&S has become more complex, and new technologies such as CAD (computer-aided design) and BIM (building information modeling) authoring tools are being used to support the process. There...