相关实验视频
Updated: Jun 26, 2025

06:04
Study Motor Skill Learning by Single-pellet Reaching Tasks in Mice
Published on: March 4, 2014
21.0K
基金会方舟:积累和重复使用知识,以获得卓越和稳健的绩效.
DongAo Ma1, Jiaxuan Pang1, Michael B Gotway2
1Arizona State University, Tempe, AZ 85281, USA.
概括
新的框架Ark汇集了各种公共医疗数据集,以训练强大的深度学习模型. 与专有模型相比,这种方法实现了更高的性能,推动了医学成像领域的开放科学.
科学领域:
- 医疗成像医学成像
- 深度学习 (Deep Learning) 是一种深度学习.
- 人工智能的人工智能
背景情况:
- 深度学习模型需要大量的注释数据集来实现专家级的性能.
- 现有的公共医学成像数据集通常很小,在专家标签上是异质的.
- 专有模型,比如谷歌的CXR-FM,是在大型的私有数据集上进行训练的.
研究的目的:
- 开发一个框架 (Ark) 通过聚集众多小的公共数据集来培养强大的基础模型.
- 为了利用来自不同来源的异质专家注释.
- 为了证明聚合的公共数据可以超过大型的私人数据集.
主要方法:
- 开发了Ark框架,以从异构的专家注释中积累和重复使用知识.
- 通过合并多个公共胸部X射线数据集 (ChestX-ray14,CheXpert,MIMIC-II,VinDr-CXR) 训练了两个方舟模型.
- 评估了使用微调,线性探测和性别偏差分析对分类和细分任务的模型.
主要成果:
- 在SOTA基线和谷歌的CXR-FM.相比,Ark模型表现出优越和强大的性能.
- 聚合公共数据集使患者群体和专家知识多样化,提高性能.
- 在节省注释成本的同时实现了高性能.
结论:
- 方舟框架有效地利用聚合的公共数据集来训练高性能医学深度学习模型.
- 开放科学倡议,共享数据和代码,可以导致基础模型超越专有模型.
- 通过对代码和模型的开放访问,Ark促进了医学成像深度学习的民主化.
相关概念视频
Retrieval
109
Retrieval is the process of getting information out of memory storage and back into conscious awareness. This ability is essential for daily tasks like brushing hair and teeth, driving to work, and performing job duties. Retrieval occurs in three ways: recall, recognition, and relearning.
Recall involves accessing information without cues, such as during an essay test, where individuals must retrieve facts and concepts from memory unaided. Another example is remembering the name of a colleague...
Recall involves accessing information without cues, such as during an essay test, where individuals must retrieve facts and concepts from memory unaided. Another example is remembering the name of a colleague...
109
Cognitive Learning
238
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...
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...
238
Higher Mental Functions of Brain: Learning and Memory
746
Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or...
746
Hindsight Biases
3.4K
Hindsight bias leads you to believe that the event you just experienced was predictable, even though it really wasn’t. In other words, you knew all along that things would turn out the way they did. Can you relate this to the phrase "Hindsight is 20/20" now?
3.4K
Neuroplasticity
329
Neuroplasticity reflects the brain's remarkable capacity to adapt and evolve, responding dynamically to learning, experiences, or injury by reorganizing its neural circuitry. This reorganization involves creating new neural connections and refining old ones through a series of biological processes that contribute to the brain's lifelong development and adaptability.
329
Metacognition
151
Metacognition is a conscious process where individuals are aware of their cognitive and executive processes, such as planning before solving a problem or self-monitoring during reading. For instance, a writer may need help with composing a piece. The situation involves a writer who is working on a piece of writing, but while doing so, they realize that something is missing. They notice that their characters lack depth or details. This realization occurs because the writer is reflecting on their...
151

