Swarm intelligence
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Swarm intelligence (SI) is the collective behavior of decentralized, self-organized systems, natural or artificial. The concept is employed in work on artificial intelligence. The expression was introduced by Gerardo Beni and Jing Wang in 1989, in the context of cellular robotic systems.[1]
SI systems consist typically of a population of simple
The application of swarm principles to
Models of swarm behavior
Boids (Reynolds 1987)
Boids is an
The name "boid" corresponds to a shortened version of "bird-oid object", which refers to a bird-like object.[6]As with most artificial life simulations, Boids is an example of emergent behavior; that is, the complexity of Boids arises from the interaction of individual agents (the boids, in this case) adhering to a set of simple rules. The rules applied in the simplest Boids world are as follows:
- separation: steer to avoid crowding local flockmates
- alignment: steer towards the average heading of local flockmates
- cohesion: steer to move toward the average position (center of mass) of local flockmates
More complex rules can be added, such as obstacle avoidance and goal seeking.
Self-propelled particles (Vicsek et al. 1995)
Self-propelled particles (SPP), also referred to as the
Metaheuristics
Ant colony optimization (Dorigo 1992)
Ant colony optimization (ACO), introduced by Dorigo in his doctoral dissertation, is a class of
Particle swarm optimization (Kennedy, Eberhart & Shi 1995)
Particle swarm optimization (PSO) is a
Artificial Swarm Intelligence (2015)
Artificial Swarm Intelligence (ASI) is method of amplifying the collective intelligence of networked human groups using control algorithms modeled after natural swarms. Sometimes referred to as Human Swarming or Swarm AI, the technology connects groups of human participants into real-time systems that deliberate and converge on solutions as dynamic swarms when simultaneously presented with a question
Applications
Swarm Intelligence-based techniques can be used in a number of applications. The U.S. military is investigating swarm techniques for controlling unmanned vehicles. The
Ant-based routing
The use of swarm intelligence in
The location of transmission infrastructure for wireless communication networks is an important engineering problem involving competing objectives. A minimal selection of locations (or sites) are required subject to providing adequate area coverage for users. A very different, ant-inspired swarm intelligence algorithm, stochastic diffusion search (SDS), has been successfully used to provide a general model for this problem, related to circle packing and set covering. It has been shown that the SDS can be applied to identify suitable solutions even for large problem instances.[38]
Airlines have also used ant-based routing in assigning aircraft arrivals to airport gates. At Southwest Airlines a software program uses swarm theory, or swarm intelligence—the idea that a colony of ants works better than one alone. Each pilot acts like an ant searching for the best airport gate. "The pilot learns from his experience what's the best for him, and it turns out that that's the best solution for the airline," Douglas A. Lawson explains. As a result, the "colony" of pilots always go to gates they can arrive at and depart from quickly. The program can even alert a pilot of plane back-ups before they happen. "We can anticipate that it's going to happen, so we'll have a gate available," Lawson says.[39]
Crowd simulation
Artists are using swarm technology as a means of creating complex interactive systems or simulating crowds.[citation needed]
Instances
Stanley and Stella in: Breaking the Ice was the first movie to make use of swarm technology for rendering, realistically depicting the movements of groups of fish and birds using the Boids system.[citation needed]
Tim Burton's Batman Returns also made use of swarm technology for showing the movements of a group of bats. [40]
Airlines have used swarm theory to simulate passengers boarding a plane. Southwest Airlines researcher Douglas A. Lawson used an ant-based computer simulation employing only six interaction rules to evaluate boarding times using various boarding methods.(Miller, 2010, xii-xviii).[41]
Human swarming
Networks of distributed users can be organized into "human swarms" through the implementation of real-time closed-loop control systems.[42][43] Developed by Louis Rosenberg in 2015, human swarming, also called artificial swarm intelligence, allows the collective intelligence of interconnected groups of people online to be harnessed.[44][45] The collective intelligence of the group often exceeds the abilities of any one member of the group.[46]
Stanford University School of Medicine published in 2018 a study showing that groups of human doctors, when connected together by real-time swarming algorithms, could diagnose medical conditions with substantially higher accuracy than individual doctors or groups of doctors working together using traditional crowd-sourcing methods. In one such study, swarms of human radiologists connected together were tasked with diagnosing chest x-rays and demonstrated a 33% reduction in diagnostic errors as compared to the traditional human methods, and a 22% improvement over traditional machine-learning.[29][47][48][30]
The University of California San Francisco (UCSF) School of Medicine released a preprint in 2021 about the diagnosis of MRI images by small groups of collaborating doctors. The study showed a 23% increase in diagnostic accuracy when using Artificial Swarm Intelligence (ASI) technology compared to majority voting.[49][50]
Swarm grammars
Swarm grammars are swarms of stochastic grammars that can be evolved to describe complex properties such as found in art and architecture.[51] These grammars interact as agents behaving according to rules of swarm intelligence. Such behavior can also suggest deep learning algorithms, in particular when mapping of such swarms to neural circuits is considered.[52]
Swarmic art
In a series of works, al-Rifaie et al.
A more recent work of al-Rifaie et al., "Swarmic Sketches and Attention Mechanism",[55] introduces a novel approach deploying the mechanism of 'attention' by adapting SDS to selectively attend to detailed areas of a digital canvas. Once the attention of the swarm is drawn to a certain line within the canvas, the capability of PSO is used to produce a 'swarmic sketch' of the attended line. The swarms move throughout the digital canvas in an attempt to satisfy their dynamic roles—attention to areas with more details—associated with them via their fitness function. Having associated the rendering process with the concepts of attention, the performance of the participating swarms creates a unique, non-identical sketch each time the 'artist' swarms embark on interpreting the input line drawings. In other works, while PSO is responsible for the sketching process, SDS controls the attention of the swarm.
In a similar work, "Swarmic Paintings and Colour Attention",[56] non-photorealistic images are produced using SDS algorithm which, in the context of this work, is responsible for colour attention.
The "computational creativity" of the above-mentioned systems are discussed in[53][57][58] through the two prerequisites of creativity (i.e. freedom and constraints) within the swarm intelligence's two infamous phases of exploration and exploitation.
Michael Theodore and Nikolaus Correll use swarm intelligent art installation to explore what it takes to have engineered systems to appear lifelike.[59]
Notable researchers
See also
- Artificial immune systems
- Collaborative intelligence
- Collective effervescence
- Group mind (science fiction)
- Cellular automaton
- Complex systems
- Differential evolution
- Dispersive flies optimisation
- Distributed artificial intelligence
- Evolutionary computation
- Global brain
- Harmony search
- Language
- Multi-agent system
- Myrmecology
- Promise theory
- Quorum sensing
- Population protocol
- Reinforcement learning
- Rule 110
- Self-organized criticality
- Spiral optimization algorithm
- Stochastic optimization
- Swarm Development Group
- Swarm robotic platforms
- Swarming
- SwisTrack
- Symmetry breaking of escaping ants
- The Wisdom of Crowds
- Wisdom of the crowd
References
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Further reading
- Bonabeau, Eric; Dorigo, Marco; Theraulaz, Guy (1999). Swarm Intelligence: From Natural to Artificial Systems. Oup USA. ISBN 978-0-19-513159-8.
- Kennedy, James; Eberhart, Russell C. (2001-04-09). Swarm Intelligence. Morgan Kaufmann. ISBN 978-1-55860-595-4.
- Engelbrecht, Andries (2005-12-16). Fundamentals of Computational Swarm Intelligence. Wiley & Sons. ISBN 978-0-470-09191-3.
External links
- Marco Dorigo and Mauro Birattari (2007). "Swarm intelligence" in Scholarpedia
- Antoinette Brown. Swarm Intelligence