Zen Group of Western Australia Zen Group of Western Australia The Zen Group of Western Australia (ZGWA) is an organization of lay zen practitioners located in Perth, Western Australia. The ZGWA is formally affiliated with the Diamond Sangha tradition of Zen Buddhism, which was founded in Hawaii in 1959 by Robert Aitken Roshi. In keeping with Diamond Sangha tradition, the ZGWA uses rituals from both the Soto and Rinzai schools. Mediation practices of Shikantaza from the Sōtō school and koan training from the Rinzai school are typical forms of practise employed by students in the group, under the guidance of the groups roshi. ZGWA's senior
Reasoning system world assumption (OWA). The OWA is often associated with ontological knowledge representation and the Semantic Web. Different systems exhibit a variety of approaches to negation. As well as logical or bitwise complement, systems may support existential forms of strong and weak negation including negation-as-failure and ‘inflationary’ negation (negation of non-ground atoms). Different reasoning systems may support monotonic or non-monotonic reasoning, stratification and other logical techniques. Many reasoning systems provide capabilities for reasoning under uncertainty. This is important when building situated reasoning agents which must deal with uncertain representations of the world. There are several common approaches to handling uncertainty. These