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ABC: Attention with Bounded-memory Control [article]

Hao Peng, Jungo Kasai, Nikolaos Pappas, Dani Yogatama, Zhaofeng Wu, Lingpeng Kong, Roy Schwartz, Noah A. Smith
2021 arXiv   pre-print
We show that disparate approaches can be subsumed into one abstraction, attention with bounded-memory control (ABC), and they vary in their organization of the memory.  ...  Attention context can be seen as a random-access memory with each token taking a slot.  ...  We propose attention with bounded-memory control (ABC), a unified abstraction over them.  ... 
arXiv:2110.02488v1 fatcat:5yjsk4mvwbhtbmccz2gveuizuy

Revisiting the ABC flow dynamo

Ismaël Bouya, Emmanuel Dormy
2013 Physics of Fluids  
Its still varies very significantly with the controlling parameter. Even at these very large values of Rm the fast dynamo property of this flow cannot yet be established.  ...  The ABC flow is a prototype for fast dynamo action, essential to the origin of magnetic field in large astrophysical objects. Probably the most studied configuration is the classical 1:1:1 flow.  ...  The computing time obviously varies with the control parameter Rm. If all spatial modes are computed up to a truncation N, the computational complexity scales like OpN 4 q.  ... 
doi:10.1063/1.4795546 fatcat:iflcitqkxng53fvb7ezzu2resa

Necessary optimality conditions of a reaction-diffusion SIR model with ABC fractional derivatives [article]

Moulay Rchid Sidi Ammi, Mostafa Tahiri, Delfim F. M. Torres
2021 arXiv   pre-print
operator with complete memory effects.  ...  Lastly, numerical results are given with the aim to show the effectiveness of the proposed control strategy, which provides significant results using the AB fractional derivative operator in the Caputo  ...  The study of fractional calculus with a non-singular kernel is gaining more and more attention.  ... 
arXiv:2106.15055v1 fatcat:fvovwjbkd5cmpbolhtdfklijlm

Optimal control of a nonlocal thermistor problem with ABC fractional time derivatives

Moulay Rchid Sidi Ammi, Delfim F.M. Torres
2019 Computers and Mathematics with Applications  
We study an optimal control problem associated to a fractional nonlocal thermistor problem involving the ABC (Atangana-Baleanu-Caputo) fractional time derivative.  ...  Then, we show that an optimal control exists. Moreover, we obtain the optimality system that characterizes the control.  ...  Thanks to the non-obedience of commutativity and associativity criteria, and due to Mittag-Leffler memory, the ABC fractional derivative promises to be a powerful mathematical tool, allowing to describe  ... 
doi:10.1016/j.camwa.2019.03.043 fatcat:dgk7fanomjfptchcelujaevibu

ABC of Spinal Cord Injury

D. Grundy, J. Russell, A. Swain
1986 BMJ (Clinical Research Edition)  
Following attention to the ABC, a central nervous system assessment is undertaken and any clothing is removed. This sequence constitutes the primary survey of ATLS.  ...  ABC of emergency radiology.  ...  ABC) assessment 6-7 alcohol therapy 30 alignment of radiological views 12 alprostadil therapy 68 ambulances 6 American Spinal Injury Association impairment scale 8, 8 anal canal sensation 9 anal digital  ... 
doi:10.1136/bmj.292.6518.485 fatcat:anoejutpbzdbziyt2nl6nhl6ua

Combined parameter and state inference with automatically calibrated ABC [article]

Anthony Ebert, Pierre Pudlo, Kerrie Mengersen, Paul Wu, Christopher Drovandi
2021 arXiv   pre-print
In these situations, some emerging approaches have incorporated existing likelihood-free techniques for static parameters, such as approximate Bayesian computation (ABC) into likelihood-based algorithms  ...  We demonstrate this algorithm's performance with three examples. We begin with two examples of state space models.  ...  We have constructed the parameterisation so that θ 1 controls the strength of the effect of past data and that θ 2 controls the shape of the relationship with past data.  ... 
arXiv:1910.14227v2 fatcat:rip2nrjq2jcfpaen3kkdhbz7fe

Necessary optimality conditions of a reaction-diffusion SIR model with ABC fractional derivatives

Moulay Rchid Sidi Ammi, Mostafa Tahiri, Delfim F. M. Torres
2021 Discrete and Continuous Dynamical Systems. Series S  
fractional derivative operator with complete memory effects.  ...  Lastly, numerical results are given with the aim to show the effectiveness of the proposed control strategy, which provides significant results using the AB fractional derivative operator in the Caputo  ...  The study of fractional calculus with a non-singular kernel is gaining more and more attention.  ... 
doi:10.3934/dcdss.2021155 fatcat:r6fdctvhdrcfjktixp7c3nktey

ABC of intensive care: Organisation of intensive care

D. Bennett, J. Bion
1999 BMJ (Clinical Research Edition)  
Pressure controlled ventilation is often used with a long inspiratory Indicators of respiratory distress x Tachypnoea, dyspnoea x Sweating x Tachycardia and bounding pulse x Agitation, restlessness,  ...  Correct circulation Once hypoxaemia has been corrected (by using controlled ventilation if necessary) meticulous attention must be paid to cardiovascular function.  ...  Emphasis should be placed on identifying patients at risk, with early recognition of physiological disturbances and prompt correction to avoid subsequent major complications.  ... 
doi:10.1136/bmj.318.7196.1468 pmid:10346777 pmcid:PMC1115845 fatcat:d6umolxikrdqne5je7bopyqlti

Escherichia coli Cultivation Process Modelling Using ABC-GA Hybrid Algorithm

Olympia Roeva, Dafina Zoteva, Velislava Lyubenova
2021 Processes  
In this paper, the artificial bee colony (ABC) algorithm is hybridized with the genetic algorithm (GA) for a model parameter identification problem.  ...  Hybrid metaheuristics combine the advantages of one algorithm with the strengths of another.  ...  Nature-inspired metaheuristic methods still receive a great deal of attention nowadays [1] [2] [3] [4] [5] [6] [7] .  ... 
doi:10.3390/pr9081418 fatcat:arcnif2kynd3pb62nglkntkv54

The ABCs of the science of structured dialogic design

Yiannis Laouris
2012 International Journal of Applied Systemic Studies  
In popular scientific language, the law says that the number of states of a control mechanism must be greater than or equal to the number of states in the system that is being controlled.  ...  You have certainly heard about the concept of short--term memory.  ... 
doi:10.1504/ijass.2012.052235 fatcat:jgt6npne2zb63i3g2ozrqo5tuq

Fingerprint Intramodal Biometric System Based on ABC Feature Fusion

J. O. Jooda, A. O. Oke, E. O. Omidiora, O. T. Adedeji
2021 Asian Journal of Research in Computer Science  
Artificial Bee Colony (ABC) is an optimizing algorithm that has been frequently used in solving FS problems because of its simple concept, use of few control parameters, easy implementation and good exploration  ...  Performance evaluation of ABC-based FIBS showed the system had a Sensitivity of 97.69% and RA of 96.76%.  ...  Two different implementations of the proposed approach are developed: ABC with binary representation and ABC with continuous representation.  ... 
doi:10.9734/ajrcos/2021/v11i230256 fatcat:k657f5v43ngirivcrko5zohts4

On a class of boundary value problems under ABC fractional derivative

Rozi Gul, Kamal Shah, Zareen A. Khan, Fahd Jarad
2021 Advances in Difference Equations  
work, we establish some necessary results about existence theory to a class of boundary value problems (BVPs) of hybrid fractional differential equations (HFDEs) in the frame of Atangana–Baleanu–Caputo (ABC  ...  Thus G is bounded. Further, as H , G are continuous, therefore G is also. Step 3.  ...  instance, chemistry, biology, physics, control theory, and engineering (see [17, [19] [20] [21] ).  ... 
doi:10.1186/s13662-021-03595-3 doaj:0d4e6a0069824c358e9c4d89ae2c0c55 fatcat:b6am7fxjj5hepa7sg4bkxonxy4

Wind Energy Power System Stabilizer Design using H∞ Robust Technique based on Enhance ABC Optimal Power System

R. Sakthivel, M. Arun
2016 International Journal of Computer Applications  
The design problem of the proposed controller is formulated as an optimization problem and enhanced ABC is employed to search for optimal controller parameters.  ...  The robust power system stabilizer (RPSS) is designed using enhanced ABC for designing the controllers for dynamical systems in electrical engineering.  ...  Three cases were considered, control with Conventional PSS, PSS with H∞ technique and using a robust PSS based on enhanced ABC optimization.  ... 
doi:10.5120/ijca2016911626 fatcat:t24qzxxeojbzra7wjua4yzh4oy

A Transition Control Mechanism for Artificial Bee Colony (ABC) Algorithm

Selcuk Aslan
2019 Computational Intelligence and Neuroscience  
In this study, the ABC algorithm and its well-known variants are powered by adding a new control mechanism in which the decision-making process of the employed bees managing transitions to the dance area  ...  However, some assumptions that are made with the purpose of reducing implementation difficulties about the sophisticated behaviours of employed, onlooker, and scout bees still require changes with the  ...  Solving Numerical Optimization Problems with Parallel Transition-Controlled ABC Algorithm.  ... 
doi:10.1155/2019/5012313 fatcat:mlbjn5ffxve5zo2fhv2mptidmq

Dynamic Relay Satellite Scheduling Based on ABC-TOPSIS Algorithm

Shufeng Zhuang, Zhendong Yin, Zhilu Wu, Xiaoguang Chen
2016 Mathematical Problems in Engineering  
To solve the dynamic scheduling problem, a new scheduling algorithm ABC-TOPSIS is proposed, which combines artificial bee colony (ABC) and technique for order preference by similarity to ideal solution  ...  Thus, the ABC-SAW would select the dynamic scheme with high priority sum. And the scheme variation attribute received less attention.  ...  Constraints (3), (4), and (5) bound the time period for the tasks.  ... 
doi:10.1155/2016/3161069 fatcat:a3uo4ns6rzb4lg44euncdy7zum
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