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Related Concept Videos

Observational Learning01:12

Observational Learning

186
Albert Bandura's observational learning, also known as imitation or modeling, occurs when a person observes and imitates another's behavior. It is a quicker process than operant conditioning. A well-known example is the Bobo doll study, where children who saw an adult acting aggressively towards the doll were more likely to act aggressively when left alone, compared to those who observed a nonaggressive adult. Many psychologists view observational learning as a form of latent learning...
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Associative Learning01:27

Associative Learning

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Associative learning is a fundamental concept in behavioral psychology, wherein a connection is established between two stimuli or events, leading to a learned response. This process is critical in understanding how behaviors are acquired and modified. Conditioning, the mechanism through which associations are formed, can be divided into two main types: classical conditioning and operant conditioning, each elucidating different aspects of associative learning.
Classical conditioning, also known...
407
Cognitive Learning01:21

Cognitive Learning

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Cognitive learning is based on purposive behavior, incidental learning, and insight learning.
E. C. Tolman's theory of purposive behavior emphasizes that much behavior is goal-directed. He argued that to understand behavior, we must look at the entire sequence of actions leading to a goal. For instance, high school students study hard, not just due to past reinforcement but also to achieve the goal of getting into a good college.
Tolman introduced the idea that behavior is influenced by...
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Introduction to Learning01:18

Introduction to Learning

445
Learning is the process of acquiring knowledge or skills through practice or experience, leading to long-lasting behavioral changes. This acquisition occurs through interaction with the environment and requires practice or experience. For instance, mastering a skill such as surfing requires considerable practice and experience, highlighting the essential role of repeated interactions with the environment in learning.
In contrast to learned behaviors, unlearned behaviors such as crying, sexual...
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Ferromagnetism01:31

Ferromagnetism

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Materials like iron, nickel, and cobalt consist of magnetic domains, within which the magnetic dipoles are arranged parallel to each other. The magnetic dipoles are rigidly aligned in the same direction within a domain by quantum mechanical coupling among the atoms. This coupling is so strong that even thermal agitation at room temperature cannot break it. The result is that each domain has a net dipole moment. However, some materials have weaker coupling, and are ferromagnetic at lower...
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Reinforcement01:23

Reinforcement

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Positive and negative reinforcement are key concepts in operant conditioning, a learning process where the consequences of a behavior affect the likelihood of that behavior being repeated.
Positive reinforcement occurs when a behavior is followed by the presentation of a rewarding stimulus, increasing the frequency of that behavior. For example:
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IronForge: An Open, Secure, Fair, Decentralized Federated Learning.

Guangsheng Yu, Xu Wang, Caijun Sun

    IEEE Transactions on Neural Networks and Learning Systems
    |November 21, 2023
    PubMed
    Summary

    IronForge is a novel federated learning (FL) framework that eliminates central coordinators using a DAG structure for fully decentralized operations. It ensures fairness and security in open networks, outperforming existing FL systems.

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    Area of Science:

    • Computer Science
    • Artificial Intelligence
    • Machine Learning

    Background:

    • Federated learning (FL) protects data privacy but faces challenges like network asynchrony and lack of fair incentives.
    • Existing FL frameworks often rely on central coordinators, limiting decentralization and scalability.

    Purpose of the Study:

    • To introduce IronForge, a new generation FL framework designed for fully decentralized, secure, and fair operations in open networks.
    • To address limitations of current FL architectures, including central dependency and incentive mechanisms.

    Main Methods:

    • Developed a directed acyclic graph (DAG)-based structure where models are nodes and relationships guide aggregation, enabling decentralized control.
    • Implemented a fair incentive mechanism based on state consistency within the DAG.
    • Integrated dedicated defense strategies against FL attacks on privacy and incentive fairness.

    Main Results:

    • IronForge demonstrated superior performance, fairness, and security compared to existing FL frameworks in experimental evaluations using FLSim.
    • The DAG-based approach successfully eliminated the need for central coordinators, achieving fully decentralized operations.
    • The incentive mechanism proved effective, particularly in networks with unevenly distributed training resources.

    Conclusions:

    • IronForge represents a significant advancement as the first secure and fully decentralized FL framework for open networks.
    • The framework is suitable for realistic network and training settings, offering a robust solution for privacy-preserving distributed learning.