Incremental Construction of Delaunay Overlaid Network for Virtual Collaborative Space

2005 ◽  
Author(s):  
M. Ohnishi ◽  
R. Nishide ◽  
S. Ueshima
Keyword(s):  
Collaborative Space ◽  
Incremental Construction

A virtual informational environment for collaborative space research project development

2005 ◽  
Vol 11 (3-4) ◽  
pp. 100-102
Author(s):  
N.M. Kussul ◽  
◽  
A.M. Lavrenyuk ◽  
A.Yu. Shelestov ◽  
O.G. Lobunets ◽  
...  
Keyword(s):  
Space Research ◽  
Project Development ◽  
Research Project ◽  
Collaborative Space ◽  
Informational Environment

scholarly journals Incremental Construction of Generalized Voronoi Diagrams on Pointerless Quadtrees

2014 ◽  
Vol 2014 ◽  
pp. 1-14 ◽  
Author(s):  
Quanjun Yin ◽  
Long Qin ◽  
Xiaocheng Liu ◽  
Yabing Zha
Keyword(s):  
Voronoi Diagrams ◽  
Surrounding Area ◽  
Repair Mechanism ◽  
Local Repair ◽  
Order Of Magnitude ◽  
Generalized Voronoi Diagrams ◽  
Incremental Construction ◽  
Coarse To Fine ◽  
Multiple Granularities ◽  
Magnitude Improvement

In robotics, Generalized Voronoi Diagrams (GVDs) are widely used by mobile robots to represent the spatial topologies of their surrounding area. In this paper we consider the problem of constructing GVDs on discrete environments. Several algorithms that solve this problem exist in the literature, notably the Brushfire algorithm and its improved versions which possess local repair mechanism. However, when the area to be processed is very large or is of high resolution, the size of the metric matrices used by these algorithms to compute GVDs can be prohibitive. To address this issue, we propose an improvement on the current algorithms, using pointerless quadtrees in place of metric matrices to compute and maintain GVDs. Beyond the construction and reconstruction of a GVD, our algorithm further provides a method to approximate roadmaps in multiple granularities from the quadtree based GVD. Simulation tests in representative scenarios demonstrate that, compared with the current algorithms, our algorithm generally makes an order of magnitude improvement regarding memory cost when the area is larger than210×210. We also demonstrate the usefulness of the approximated roadmaps for coarse-to-fine pathfinding tasks.

Hand-Written Road Maps to Multi-Dimensional Space

2019 ◽  
Vol 1 (1) ◽  
pp. 40-51
Author(s):  
István Berszán ◽  
Philip Gross
Keyword(s):  
Creative Writing ◽  
Dimensional Space ◽  
Literary Reading ◽  
Reading And Writing ◽  
Attention System ◽  
Road Maps ◽  
Collaborative Space ◽  
Literary Practices ◽  
Time Projection

Abstract In their article “Hand-Written Road Maps to Multi-Dimensional Space” István Berszán and Philip Gross investigate the heightened alertness of literary reading and writing in an interview with Gross, the prize-winning British poet and professor of creative writing. After the presentation of the interviewee Berszán ask him questions concerning the kinetic spaces of his literary practices. The itinerary follows issues like place, temporality of occurrences, attention, system and ecology, metaphor, time projection, gesture-resonance and collaboration. Gross seems to be as good a creative playmate during the discussion as he was for children, students, artists or readers who met him in a „collaborative space between”: his answers turn the questions both into hunter and quarry.

Emergent Tangled Program Graphs in Partially Observable Recursive Forecasting and ViZDoom Navigation Tasks

2021 ◽  
Vol 1 (3) ◽  
pp. 1-41
Author(s):  
Stephen Kelly ◽  
Robert J. Smith ◽  
Malcolm I. Heywood ◽  
Wolfgang Banzhaf
Keyword(s):  
Empirical Evaluation ◽  
Complete Information ◽  
Visual Navigation ◽  
Sources Of Information ◽  
Variation Operators ◽  
Incremental Construction ◽  
Partially Observable ◽  
First Person Shooter ◽  
With Memory ◽  
Program Graph

Modularity represents a recurring theme in the attempt to scale evolution to the design of complex systems. However, modularity rarely forms the central theme of an artificial approach to evolution. In this work, we report on progress with the recently proposed Tangled Program Graph (TPG) framework in which programs are modules. The combination of the TPG representation and its variation operators enable both teams of programs and graphs of teams of programs to appear in an emergent process. The original development of TPG was limited to tasks with, for the most part, complete information. This work details two recent approaches for scaling TPG to tasks that are dominated by partially observable sources of information using different formulations of indexed memory. One formulation emphasizes the incremental construction of memory, again as an emergent process, resulting in a distributed view of state. The second formulation assumes a single global instance of memory and develops it as a communication medium, thus a single global view of state. The resulting empirical evaluation demonstrates that TPG equipped with memory is able to solve multi-task recursive time-series forecasting problems and visual navigation tasks expressed in two levels of a commercial first-person shooter environment.

The Virtual Water Gallery: a collaborative science and art project

2021 ◽  
Author(s):  
Louise Arnal ◽  
Martyn Clark ◽  
Stacey Dumanski ◽  
John Pomeroy
Keyword(s):  
Boreal Forests ◽  
Water Environment ◽  
Leading Edge ◽  
Virtual Water ◽  
Pilot Project ◽  
The Arctic ◽  
The Public ◽  
Science And Art ◽  
Quality Degradation ◽  
Collaborative Space

<p>Water is life and so water-related challenges, such as droughts, floods and water quality degradation, affect everyone. Conceptualizing water-related environmental and social problems in novel ways, with engagement between the public and science researchers, may lead to new and more comprehensive solutions to complex problems. A society that makes decisions informed by science and science that approaches problems in a transdisciplinary manner are key elements in finding creative and holistic solutions to the water-related challenges we all face. We believe that art can help co-establish new social norms to help us grasp and tackle water-related challenges in a more holistic manner.</p><p>The Virtual Water Gallery* is a science and art pilot project funded by Global Water Futures (GWF). GWF is a University of Saskatchewan-led research program that is funded in part by the Canada First Research Excellence Fund. Its overarching goal is to deliver risk management solutions, informed by leading-edge water science, to manage water futures in Canada and other cold regions where global warming is changing landscapes, ecosystems and the water environment. Launched in Summer 2020, the Virtual Water Gallery aims to provide a safe, inclusive and collaborative space for fully open discussions between scientists, artists, and a wider public, to explore past, present and future water challenges.</p><p>As part of this pilot project, 13 artists were paired with teams of GWF scientists to co-explore specific water challenges in various Canadian ecoregions and river basins, including the Arctic, the mountains, boreal forests, prairies, farmlands, lakes, rivers, and communities. These collaborations are leading to the co-creation of science and art pieces which will be exhibited online on a Virtual Water Gallery. By making this online exhibition accessible to a global audience, we hope that the co-created art pieces will open creative and informative discussions about urgent water challenges to a wider audience via the gallery space.</p><p>*More information about the Virtual Water Gallery on the GWF webpage: https://gwf.usask.ca/outreach/virtual-water-gallery.php</p>

Who Am I?

2021 ◽  
Vol 5 (3) ◽  
pp. 1-32
Author(s):  
Natã M. Barbosa ◽  
Gang Wang ◽  
Blase Ur ◽  
Yang Wang
Keyword(s):  
Pervasive Computing ◽  
Physical World ◽  
Web Browsing ◽  
Privacy Concerns ◽  
Internet Users ◽  
Profiling Techniques ◽  
Positive Experiences ◽  
Field Deployment ◽  
Incremental Construction ◽  
And Control

To enable targeted ads, companies profile Internet users, automatically inferring potential interests and demographics. While current profiling centers on users' web browsing data, smartphones and other devices with rich sensing capabilities portend profiling techniques that draw on methods from ubiquitous computing. Unfortunately, even existing profiling and ad-targeting practices remain opaque to users, engendering distrust, resignation, and privacy concerns. We hypothesized that making profiling visible at the time and place it occurs might help users better understand and engage with automatically constructed profiles. To this end, we built a technology probe that surfaces the incremental construction of user profiles from both web browsing and activities in the physical world. The probe explores transparency and control of profile construction in real time. We conducted a two-week field deployment of this probe with 25 participants. We found that increasing the visibility of profiling helped participants anticipate how certain actions can trigger specific ads. Participants' desired engagement with their profile differed in part based on their overall attitudes toward ads. Furthermore, participants expected algorithms would automatically determine when an inference was inaccurate, no longer relevant, or off-limits. Current techniques typically do not do this. Overall, our findings suggest that leveraging opportunistic moments within pervasive computing to engage users with their own inferred profiles can create more trustworthy and positive experiences with targeted ads.

Incremental Construction of the Robot’s Environmental Map Using Interval Analysis

2005 ◽  
pp. 127-141 ◽  
Author(s):  
Cyril Drocourt ◽  
Laurent Delahoche ◽  
Eric Brassart ◽  
Bruno Marhic ◽  
Arnaud Clérentin
Keyword(s):  
Interval Analysis ◽  
Incremental Construction ◽  
Environmental Map

Joining a collaborative space: is it really a better place to work?

2019 ◽  
Vol 40 (2) ◽  
pp. 14-21 ◽  
Author(s):  
Ignasi Capdevila
Keyword(s):  
Social Innovation ◽  
Content Type ◽  
Innovation Activities ◽  
Collaborative Spaces ◽  
Innovation Modes ◽  
Living Labs ◽  
Collaborative Space ◽  
Coworking Spaces ◽  
Innovation Approach

Purpose Collaborative spaces such as Fab Labs, Living Labs, coworking spaces, hackerspaces, makerspaces, etc. are localized spaces that offer open access to resources. The purpose of this paper is to explain what motivates participants in such spaces, according to different innovation logics. Design/methodology/approach The paper is based on qualitative studies of 43 collaborative spaces in Paris and Barcelona. Findings This paper proposes a typology of different collaborative spaces to understand what motivates their participants. The classification is based on the innovation approach of each type of space: methods and techniques of ideation, social innovation, open innovation and user-driven innovation. Research limitations/implications The classification of collaborative spaces clearly identifies different innovation approaches. However, it might result to be too simplistic and may not represent all spaces under the same denomination. Practical implications This paper provides some guidelines for managers who run or intend to open a collaborative space. In bottom-up innovation modes, to increase the commitment of the participants, managers should provide the tools and resources needed to successfully achieve the goals of the members’ projects. In top-down innovation modes, managers should rather focus on designing an attractive and rewarding process of ideation. Originality/value This paper contributes to the understanding of collaborative spaces; it shows that participants’ engagement is related to the nature of the innovation activities that take place in collaborative spaces, and it compares different types of spaces to explain their differences and similarities.

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