Vector-field consistency
Encyclopedia
Vector-Field ConsistencyDesignation coined by L. Veiga. is a consistency model
for replicated data (for example, objects), initially described in a paper which was awarded the best-paper prize in the ACM/IFIP/Usenix Middleware Conference 2007. It has since been enhanced for increased scalability and fault-tolerance in a recent paper.
in adhoc gaming in order to minimize bandwidth usage without sacrificing playability. Intuitively, it captures the notion that although players require, wish, and take advantage of information regarding the whole of the game world (as opposed to a restricted view to rooms, arenas, etc. of limited size employed in many multiplayer game
s), they need to know information with greater freshness, frequency, and accuracy as other game entities are located closer and closer to the player's position.
It prescribes a multidimensional divergence bounding scheme, based on a vector field
that employs consistency vectors k=(θ,σ,ν), standing for maximum allowed time - or replica staleness, sequence - or missing updates, and valueSince in the Greek alphabet
there was no letter for the vee sound, the nu letter was preferred for its resemblance with the roman V, for value, instead of β (beta) for the vee sound in contemporary Greek speaking. - or user-defined measured replica divergence, applied to all space coordinates in game scenario or world.
The consistency vector-fields emanate from field-generators designated as pivots (for example, players) and field intensity
attenuates as distance grows from these pivots in concentric or square-like regions. This consistency model unifies locality-awareness techniques employed in message routing and consistency enforcement for multiplayer games, with divergence bounding techniques traditionally employed in replicated database and web scenarios.
Consistency model
In computer science, consistency models are used in distributed systems like distributed shared memory systems or distributed data stores . The system supports a given model, if operations on memory follow specific rules...
for replicated data (for example, objects), initially described in a paper which was awarded the best-paper prize in the ACM/IFIP/Usenix Middleware Conference 2007. It has since been enhanced for increased scalability and fault-tolerance in a recent paper.
Description
This consistency model was initially designed for replicated data managementData management
Data management comprises all the disciplines related to managing data as a valuable resource.- Overview :The official definition provided by DAMA International, the professional organization for those in the data management profession, is: "Data Resource Management is the development and execution...
in adhoc gaming in order to minimize bandwidth usage without sacrificing playability. Intuitively, it captures the notion that although players require, wish, and take advantage of information regarding the whole of the game world (as opposed to a restricted view to rooms, arenas, etc. of limited size employed in many multiplayer game
Multiplayer game
A multiplayer video game is one which more than one person can play in the same game environment at the same time. Unlike most other games, computer and video games are often single-player activities that put the player against preprogrammed challenges and/or AI-controlled opponents, which often...
s), they need to know information with greater freshness, frequency, and accuracy as other game entities are located closer and closer to the player's position.
It prescribes a multidimensional divergence bounding scheme, based on a vector field
Vector field
In vector calculus, a vector field is an assignmentof a vector to each point in a subset of Euclidean space. A vector field in the plane for instance can be visualized as an arrow, with a given magnitude and direction, attached to each point in the plane...
that employs consistency vectors k=(θ,σ,ν), standing for maximum allowed time - or replica staleness, sequence - or missing updates, and valueSince in the Greek alphabet
Greek alphabet
The Greek alphabet is the script that has been used to write the Greek language since at least 730 BC . The alphabet in its classical and modern form consists of 24 letters ordered in sequence from alpha to omega...
there was no letter for the vee sound, the nu letter was preferred for its resemblance with the roman V, for value, instead of β (beta) for the vee sound in contemporary Greek speaking. - or user-defined measured replica divergence, applied to all space coordinates in game scenario or world.
The consistency vector-fields emanate from field-generators designated as pivots (for example, players) and field intensity
Field strength
In physics, the field strength of a field is the magnitude of its vector value.In theoretical physics, field strength is another name for the curvature form...
attenuates as distance grows from these pivots in concentric or square-like regions. This consistency model unifies locality-awareness techniques employed in message routing and consistency enforcement for multiplayer games, with divergence bounding techniques traditionally employed in replicated database and web scenarios.