Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Improving Translational Accuracy02:07

Improving Translational Accuracy

14.0K
Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
14.0K
Improving Translational Accuracy02:07

Improving Translational Accuracy

3.5K
3.5K
Language Development01:22

Language Development

804
Children master language quickly and with relative ease, supported by both biological predisposition and reinforcement. B. F. Skinner (1957) proposed that language is learned through reinforcement, while Noam Chomsky (1965) argued that language acquisition mechanisms are biologically determined.
The critical period for language acquisition suggests that the ability to acquire language is at its peak early in life. As people age, this proficiency decreases. Language development begins very...
804
Introduction to Learning01:18

Introduction to Learning

895
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...
895
End Point Prediction: Gran Plot01:07

End Point Prediction: Gran Plot

1.1K
A Gran plot is used to predict the equivalence volume or endpoint of a potentiometric or acid-base titration without reaching the endpoint. Typically, titration data is collected as a function of the titrant's volume up to a point less than the equivalence volume and then transformed into a linear format. The straight line is extended to the x-axis, indicating the necessary titrant volume to achieve the equivalence point.
For potentiometric titration, the Gran plot is created by plotting...
1.1K
Associative Learning01:27

Associative Learning

1.2K
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...
1.2K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

From our hospitals to their kitchens: a dual-perspective plea for continuous nutrition in chronic obstructive pulmonary disease care.

Journal of thoracic disease·2026
Same author

De novo design of miniproteins targeting GPCRs.

Nature·2026
Same author

Confidence-Aware Pseudo-Label Self-Correction for Weakly Supervised Visual Grounding.

IEEE transactions on pattern analysis and machine intelligence·2026
Same author

An NSP2-MYB module orchestrates flavonoid biosynthesis and nodule symbiosis.

Current biology : CB·2026
Same author

Structure of the G<sub>q</sub>-coupled adhesion receptor ADGRL4.

Nature communications·2025
Same author

Integrated local and global Ki67 profiling for prognostic stratification and therapeutic guidance in high-grade neuroendocrine neoplasms: a multicenter validation study.

International journal of surgery (London, England)·2025

相关实验视频

Updated: Jan 8, 2026

Eye-tracking to Distinguish Comprehension-based and Oculomotor-based Regressive Eye Movements During Reading
05:54

Eye-tracking to Distinguish Comprehension-based and Oculomotor-based Regressive Eye Movements During Reading

Published on: October 18, 2018

6.6K

软弱和单框监督时间句子与高斯基于对比的命题学习接地.

Minghang Zheng, Yanjie Huang, Qingchao Chen

    IEEE transactions on pattern analysis and machine intelligence
    |December 17, 2025
    PubMed
    概括

    相反的提议学习 (CPL) 通过在视频中生成更好的提议来改善弱监督的时间句子接地. 这种方法有效地区分出令人困惑的场景,并为最先进的性能平衡注释成本.

    科学领域:

    • 计算机科学 计算机科学
    • 人工智能的人工智能
    • 机器学习 机器学习

    背景情况:

    • 时间句子接地根据语言查询定位视频时刻.
    • 由于时间边界注释的困难,弱监督的方法正在获得引力.
    • 现有的方法使用低质量,内容独立的提案,并忽略视频内负面样本.

    研究的目的:

    • 引入对比性命题学习 (CPL) 以改善弱监督的时间句子接地.
    • 解决现有方法的局限性,包括提案质量和负样本选择.
    • 探索注释努力和接地性能之间的平衡.

    主要方法:

    • 在同一个视频中使用可学习的不对称高斯函数生成正负的命题.
    • 实施可控,易于硬化的消极提案挖掘策略,以识别混的细分市场.
    • 扩大低成本单框注释的提案生成.

    主要成果:

    • CPL有效地区分了高度混的视频段.
    • 该方法在基准数据集 (Charades-STA,ActivityNet Captions,DiDeMo) 上实现了最先进的性能.
    • 该方法证明了对基于MIL和基于重建的框架的适用性.

    相关实验视频

    Last Updated: Jan 8, 2026

    Eye-tracking to Distinguish Comprehension-based and Oculomotor-based Regressive Eye Movements During Reading
    05:54

    Eye-tracking to Distinguish Comprehension-based and Oculomotor-based Regressive Eye Movements During Reading

    Published on: October 18, 2018

    6.6K

    结论:

    • 对比性命题学习提供了一种优越的方法,用于弱监督的时间句子接地.
    • 拟议的方法增强了提案生成和负采样策略.
    • CPL提供了一个灵活的解决方案,可以适应不同的注释负担,并实现顶级结果.