SERE:探索自主监督变压器的功能自我关系

相关实验视频

Updated: Jul 17, 2025

A Swin Transformer-Based Model for Thyroid Nodule Detection in Ultrasound Images
04:23

A Swin Transformer-Based Model for Thyroid Nodule Detection in Ultrasound Images

Published on: April 21, 2023

1.9K

Zhong-Yu Li, Shanghua Gao, Ming-Ming Cheng

    IEEE transactions on pattern analysis and machine intelligence
    |August 30, 2023
    PubMed
    概括

    这项研究引入了一种新的自我监督学习方法,称为视觉转换器 (ViT) 的特征自我关系 (SERE). SERE 增强了 ViT 的功能.

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    Visualization Method for Proprioceptive Drift on a 2D Plane Using Support Vector Machine07:05

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    相关概念视频

    Transformers01:26

    Transformers

    A device that transforms voltages from one value to another using induction is called a transformer. A transformer consists of two separate coils, or windings, wrapped around the same soft iron core. However, they are electrically insulated from each other.
    The iron core has a substantial relative permeability. Therefore, the magnetic field lines generated due to the current in one winding are almost entirely confined within the core, such that the same magnetic flux permeates each turn of both...
    1.1K
    Types Of Transformers01:16

    Types Of Transformers

    Transformers can provide desired voltages to a circuit by modifying the number of turns in the secondary windings.
    If the ratio of the number of turns in the secondary winding to that of the primary winding is greater than one, then the transformer is said to be a step-up transformer. In a step-up transformer, the voltage at the secondary winding is greater than the voltage applied at the primary winding.
    However, if this ratio is less than one, the transformer is said to be a step-down...
    1.0K
    The Ideal Transformer01:26

    The Ideal Transformer

    In single-phase two-winding transformers, two windings are coiled around a magnetic core characterized by cross-sectional area A and magnetic permeability μ. A phasor current i1 enters the left winding while i2 exits the right winding, establishing the fundamental working of the transformer through electromagnetic principles.
    Ampere's Law forms the basis of understanding the magnetic field within the transformer. It states that the integral of the magnetic field intensity's...
    423
    Three-Winding Transformers01:19

    Three-Winding Transformers

    Three identical single-phase transformers can be configured to form a three-phase transformer connection, which involves high-voltage and low-voltage windings. The high-voltage windings are denoted by capital letters A-B-C, while the low-voltage windings are labeled with lowercase letters a-b-c, representing their respective phases. This notation helps distinguish between the high and low voltage sides of the transformer.
    In the per-unit equivalent circuit of a grounded Y-Y three-phase...
    258
    Equivalent Circuits for Practical Transformers01:28

    Equivalent Circuits for Practical Transformers

    The practical equivalent circuits of single-phase two-winding transformers exhibit significant deviations from their idealized versions due to the inherent properties of winding resistance and finite core permeability. These properties result in real and reactive power losses, affecting the transformer's performance. Understanding these deviations is crucial for designing more efficient transformers.
    In a practical transformer, each winding exhibits resistance and leakage reactance. The...
    464
    Transformers with Off-Nominal Turns Ratios01:25

    Transformers with Off-Nominal Turns Ratios

    In scenarios involving parallel transformers with disparate ratings, developing per-unit models requires accommodating off-nominal turns ratios. This situation arises when the selected base voltages are not proportional to the transformer’s voltage ratings. Consider a transformer where the rated voltages are related by the term a. If the chosen voltage bases satisfy a relationship involving term b, term c is defined as the ratio of these bases. This ratio is then substituted into the...
    176