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

First Pass Effect01:12

First Pass Effect

7.8K
Presystemic elimination, or the first-pass effect, is the metabolism of drugs that reduces their effective concentration at the site of action. Apart from the first-pass effect, the systemic bioavailability of the drug is also reduced by other factors, including incomplete absorption or chemical degradation of drugs.
Depending on the route of administration, drugs can be metabolized in the liver, intestine, lungs, and vasculature. Orally administered drugs are first absorbed through the...
7.8K
Adjusting a Traverse01:12

Adjusting a Traverse

233
In the site survey of a four-sided traverse, internal angles are essential to ensure geometric accuracy. The survey revealed that the sum of the measured internal angles was 359 degrees and 48 minutes, which is 12 minutes less than the expected 360 degrees. This discrepancy signals an error likely arising from measurement inaccuracies during the fieldwork.To rectify this error, the adjustment process involved distributing the 12-minute shortfall equally across the four internal angles. By...
233
Crossover Experiments01:16

Crossover Experiments

4.3K
Crossover experiments, also called the repeated-measurements design, is a study design in which all experimental units are exposed to all treatments in different periods. Crossover experiments are generally used in psychology, the pharmaceutical industry, agriculture, and medicine.
Crossover designs are performed even with smaller sample sizes since the samples can act as their controls. These are better than simple randomized trials since patients are exposed to all the treatments.
4.3K
Reflex Activity01:08

Reflex Activity

2.5K
A reflex activity is an automatic, involuntary response to specific stimuli. It is a part of our survival mechanism, designed to protect us from potential harm. For example, when a bright light suddenly shines into our eyes, we instinctively close them or look away. This is a simple reflex activity orchestrated by the nervous system without conscious thought or effort.
A reflex exam is a diagnostic procedure performed by a healthcare professional to evaluate the functionality of a patient's...
2.5K
Introspection01:29

Introspection

96
Introspection, long upheld as a reliable route to self-knowledge, involves examining one's thoughts, emotions, and mental processes. It underpins many psychological practices, from mindfulness meditation to psychotherapy and self-help strategies. However, empirical evidence challenges the accuracy of introspection as a means of understanding oneself.Limitations of Introspective InsightSeminal work by Nisbett and Wilson demonstrated that individuals are frequently unaware of the true causes...
96
Homologous Recombination02:31

Homologous Recombination

5.5K
5.5K

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

Towards end-to-end automation of AI research.

Nature·2026
Same author

AI discovers learning algorithm that outperforms those designed by humans.

Nature·2025
Same author

Automating the Search for Artificial Life With Foundation Models.

Artificial life·2025
Same author

Managing extreme AI risks amid rapid progress.

Science (New York, N.Y.)·2024
Same author

Environmental, individual and social traits of free-ranging raccoons influence performance in cognitive testing.

The Journal of experimental biology·2022
Same author

Evolving Multimodal Robot Behavior via Many Stepping Stones with the Combinatorial Multiobjective Evolutionary Algorithm.

Evolutionary computation·2021
Same journal

Retraction Note: NSD2 targeting reverses plasticity and drug resistance in prostate cancer.

Nature·2026
Same journal

Enhanced B cell priming induces broadly neutralizing HIV-1 apex antibodies.

Nature·2026
Same journal

Vaccination elicits HIV broadly neutralizing antibodies in primates.

Nature·2026
Same journal

Child online safety needs more than social-media bans.

Nature·2026
Same journal

Ebola preparedness must start with ecosystems and before humans show symptoms.

Nature·2026
Same journal

AI tools can speed up thinking, but evidence still comes from the lab bench.

Nature·2026
查看所有相关文章

相关实验视频

Updated: Nov 16, 2025

Author Spotlight: Investigating the Effects of Mind-Body-Movement Practices on Brain Function
06:17

Author Spotlight: Investigating the Effects of Mind-Body-Movement Practices on Brain Function

Published on: January 26, 2024

2.4K

首先返回,然后探索

Adrien Ecoffet1,2, Joost Huizinga3,4, Joel Lehman5,6

  • 1Uber AI Labs, San Francisco, CA, USA. adrienecoffet@gmail.com.

Nature
|February 25, 2021
PubMed
概括
此摘要是机器生成的。

Go-Explore算法通过记住状态并返回探索之前来改善强化学习. 这种方法解决了以前未解决的游戏,并提升了人工智能探索能力.

更多相关视频

Novel Object Exploration as a Potential Assay for Higher Order Repetitive Behaviors in Mice
08:28

Novel Object Exploration as a Potential Assay for Higher Order Repetitive Behaviors in Mice

Published on: August 20, 2016

8.7K
Examining Recall Memory in Infancy and Early Childhood Using the Elicited Imitation Paradigm
06:35

Examining Recall Memory in Infancy and Early Childhood Using the Elicited Imitation Paradigm

Published on: April 28, 2016

34.8K

相关实验视频

Last Updated: Nov 16, 2025

Author Spotlight: Investigating the Effects of Mind-Body-Movement Practices on Brain Function
06:17

Author Spotlight: Investigating the Effects of Mind-Body-Movement Practices on Brain Function

Published on: January 26, 2024

2.4K
Novel Object Exploration as a Potential Assay for Higher Order Repetitive Behaviors in Mice
08:28

Novel Object Exploration as a Potential Assay for Higher Order Repetitive Behaviors in Mice

Published on: August 20, 2016

8.7K
Examining Recall Memory in Infancy and Early Childhood Using the Elicited Imitation Paradigm
06:35

Examining Recall Memory in Infancy and Early Childhood Using the Elicited Imitation Paradigm

Published on: April 28, 2016

34.8K

科学领域:

  • 人工智能
  • 机器学习
  • 机器人技术

背景情况:

  • 强化学习 (RL) 旨在实现自主决策,但与稀疏或欺骗性的奖励信号作斗争.
  • 有效的环境探索对RL至关重要,但仍然是一个重大挑战.
  • 现有的RL算法往往会忘记先前访问的状态,或者在探索新状态之前无法重新访问它们.

研究的目的:

  • 在强化学习探索中应对脱离和脱轨的挑战.
  • 为更有效的环境探索而设计的新算法Go-Explore.
  • 在复杂的游戏和机器人任务中展示Go-Explore的有效性.

主要方法:

  • 介绍了Go-Explore,这是一个算法家族,强调记住有希望的状态,并在探索之前返回它们.
  • 将Go-Explore应用到以前未解决的Atari游戏和硬盘探索基准.
  • 测试了 Go-Explore 在稀疏奖励的选择和放置机器人任务中.
  • 综合目标化政策以进一步提高勘探效率和处理随机性.

主要成果:

  • Go-Explore成功地解决了所有以前未解决的Atari游戏.
  • 在硬探索游戏中实现了最先进的性能,对蒙特祖马的复仇和陷有了显著的改进.
  • 在具有挑战性的稀有奖励机器人任务中展示了实际应用.
  • 目标条件的政策提高了Go-Explore的勘探效率和稳定性.

结论:

  • 记忆,返回和从状态探索的原则是RL探索的强大和通用方法.
  • Go-Explore提供了显著的性能提升,
  • 这些发现突显了结构化勘探策略在克服RL局限性的重要性.