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相关概念视频

Control Systems01:10

Control Systems

1.1K
Control systems are everywhere in contemporary society, influencing diverse applications from aerospace to automated manufacturing. These systems can be found naturally within biological processes, such as blood sugar regulation and heart rate adjustment in response to stress, as well as in man-made systems like elevators and automated vehicles. A control system is essentially a network of subsystems and processes that collaboratively convert specific inputs into desired outputs.
At the heart...
1.1K
Hierarchy of Motor Control01:18

Hierarchy of Motor Control

2.6K
The hierarchy of motor control refers to the different levels of organization and processing involved in controlling movement in the body. These levels range from higher cortical areas involved in planning and decision-making to lower spinal cord reflexes that respond automatically to external stimuli.
2.6K
Open and closed-loop control systems01:17

Open and closed-loop control systems

705
Control systems are foundational elements in automation and engineering. They are broadly categorized into open-loop and closed-loop systems. These classifications hinge on the presence or absence of feedback mechanisms, significantly influencing the system's performance, complexity, and application.
An open-loop control system operates without feedback from the output. It consists of two primary elements: the controller and the controlled process. The controller receives an input signal...
705
Stereotype Content Model02:16

Stereotype Content Model

14.7K
The Stereotype Content Model (SCM) was first proposed by Susan Fiske and her colleagues (Fiske, Cuddy, Glick & Xu, 2002; see also Fiske, 2012 and Fiske, 2017). The SCM specifies that when someone encounters a new group, they will stereotype them based on two metrics: warmth—or that group’s perceived intent, and how likely they are to provide help or inflict harm—and competence—or their ability to carry out that objective. Depending on the warmth-competence...
14.7K
Components of Language01:24

Components of Language

262
Language, whether spoken, signed, or written, consists of specific components: lexicon and grammar. The lexicon is the vocabulary of a language, comprising its words. Grammar is the set of rules used to convey meaning through the lexicon. For example, English grammar adds “-ed” to most verbs to indicate past tense. Words are formed by combining phonemes, which are the basic sound units of a language. Different languages have different sets of phonemes (e.g., “ah” vs.
262
Mechanistic Models: Overview of Compartment Models01:21

Mechanistic Models: Overview of Compartment Models

77
Mechanistic models, a category encompassing both physiological and compartmental modeling, differ from empirical models' approaches to incorporating known factors about the systems being modeled. Empirical models describe data with minimal assumptions, while mechanistic models aim to provide a robust description of available data by specifying assumptions and integrating known factors about the system. Compartmental analysis is a key example of a mechanistic model in pharmacokinetics and...
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相关实验视频

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Real-Time Proxy-Control of Re-Parameterized Peripheral Signals using a Close-Loop Interface
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Real-Time Proxy-Control of Re-Parameterized Peripheral Signals using a Close-Loop Interface

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一个语义和控制的综合模型.

Tyler Giallanza1, Declan Campbell2, Jonathan D Cohen1

  • 1Department of Psychology, Princeton University.

Psychological review
|July 25, 2024
PubMed
概括

本研究介绍了语义认知和认知控制的统一模型,解释了知识是如何被学习和灵活使用的. 该模型展示了环境统计如何通过端到端学习塑造语义知识和任务适当的控制.

科学领域:

  • 认知科学 认知科学
  • 神经科学是一个神经科学.
  • 人工智能的人工智能

背景情况:

  • 语义认知和认知控制研究重点是学习和灵活的知识使用.
  • 现有的模型很难解释控制如何对不同特征进行操作,以及控制表征是如何出现的.

研究的目的:

  • 呈现一个统一的语义和控制模型.
  • 解释如何从环境统计中产生语义知识和灵活访问.
  • 解决语义认知和认知控制文献中尚未解决的问题.

主要方法:

  • 开发了一个整合语义认知和认知控制的统一模型.
  • 利用基于环境统计的端到端学习.
  • 进行行为实验和计算模拟.

主要成果:

  • 该模型提供了对语义知识获取和灵活部署的连贯视图.
  • 展示了控制如何对不同特征进行操作.
  • 通过学习显示了结构化的控制表示的出现.

结论:

  • 统一模型为认知科学的基本问题提供了洞察力.

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  • 这种方法对机器学习和人工智能有影响.
  • 从环境统计学中进行端到端的学习是灵活使用知识的关键.