7 research outputs found
Designing Dependencies
Given a binary recursively enumerable relation R, one or more logic programs over a language L can be constructed and interconnected to produce a dependency relation D on selected predicates within the Herbrand base BL of L isomorphic to R. D can be, optionally, a positive, negative or mixed dependency relation. The construction is applied to representing any effective game of the type introduced by Gurevich and Harrington, which they used to prove Rabin\u27s decision method for S2S, as the dependency relation of a logic program. We allow games over an infinite alphabet of possible moves. We use this representation to reveal a common underlying reason, having to do with the shape of a program\u27s dependency relation, for the complexity of several logic program properties
Spatio-Temporal Neural Networks for Space-Time Series Forecasting and Relations Discovery
International audienceWe introduce a dynamical spatio-temporal model formalized as a recurrent neural network for forecasting time series of spatial processes, i.e. series of observations sharing temporal and spatial dependencies. The model learns these dependencies through a structured latent dynamical component, while a decoder predicts the observations from the latent representations. We consider several variants of this model, corresponding to different prior hypothesis about the spatial relations between the series. The model is evaluated and compared to state-of-the-art baselines, on a variety of forecasting problems representative of different application areas: epidemiology, geo-spatial statistics and car-traffic prediction. Besides these evaluations, we also describe experiments showing the ability of this approach to extract relevant spatial relations
An Experimental Platform for Investigating Decision and Collaboration Technologies in Time-Sensitive Mission Control Operations
This report describes the conceptual design and detailed architecture of an experimental platform
developed to support investigations of novel decision and collaboration technologies for
complex, time-critical mission control operations, such as military command and control and
emergency response. In particular, the experimental platform is designed to enable exploration
of novel interface and interaction mechanisms to support both human-human collaboration and
human-machine collaboration for mission control operations involving teams of human operators
engaged in supervisory control of intelligent systems, such as unmanned aerial vehicles (UAVs).
Further, the experimental platform is designed to enable both co-located and distributed
collaboration among operations team members, as well as between team members and relevant
mission stakeholders.
To enable initial investigations of new information visualization, data fusion, and data sharing
methods, the experimental platform provides a synthetic task environment for a representative
collaborative time-critical mission control task scenario. This task scenario involves a UAV
operations team engaged in intelligence, surveillance, and reconnaissance (ISR) activities. In the
experimental task scenario, the UAV team consists of one mission commander and three
operators controlling multiple, homogeneous, semi-autonomous UAVs. In order to complete its
assigned missions, the UAV team must coordinate with a ground convoy, an external strike
team, and a local joint surveillance and target attack radar system (JSTARS). This report details
this task scenario, including the possible simulation events that can occur and the logic
governing the simulation dynamics.
In order to perform human-in-the-loop experimentation within the synthetic task environment,
the experimental platform also consists of a physical laboratory designed to emulate a miniature
command center. The Command Center Laboratory comprises a number of large-screen
displays, multi-screen operator stations, and mobile, tablet-style devices. This report details the
physical configuration and hardware components of this Command Center Laboratory. Details
are also provided of the software architecture used to implement the synthetic task environment
and experimental interface technologies to facilitate user experiments in this laboratory.
The report also summarizes the process of conducting an experiment in the experimental
platform, including details of scenario design, hardware and software instrumentation, and
participant training. Finally, the report suggests several improvements that could be made to the
experimental platform based on insights gained from initial user experiments that have been
conducted in this environment.Prepared For Boeing, Phantom Work
SAFe metodologian vaikutus kommunikaatioon ja yhteistyöhön
Nowadays, with the influence of global economy large corporations use global software development to utilise advantages of geographically decentralised organisations and global outsourced software development. Through distributed organisations the work can be done around the clock. Global software development is impacted by three distance dimensions: time distance, geographical distance, and socio-cultural distance, which all bring some challenges. At the same time agile way of working has become more and more popular method in software development. As agile practises are created for co-located teams there is a demand for having working online solutions for communication and collaboration in distributed teams. Corporations use scaled agile way of working to support software develop-ment of large initiatives and projects. Scaled Agile Framework (SAFe) is the most popular among the scaled agile methods.
This thesis was conducted as a case study in a multinational corporation. Objective of the case study was to research effectiveness of scaled agile methodology SAFe on communication and collaboration in teams and agile release trains. The case study included two parts: a web-survey and interviews. The results of the analyses of the case study support findings from the literature in the field. The results indicate the importance of communication and collaboration in agile practices and the significance of the online tools that support it