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相关概念视频

Trial and Error and Algorithm01:12

Trial and Error and Algorithm

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A problem-solving strategy is a plan of action used to find a solution. Different strategies have distinct action plans. Trial and error involves trying different solutions until one works. For instance, to fix a broken printer, you might check ink levels, ensure the paper tray isn't jammed, and verify the printer's connection to your laptop. This method can be time-consuming but is commonly used. Thomas Edison, for example, used trial and error to find a suitable filament for the light...
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Statically Indeterminate Problem Solving01:16

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Statically indeterminate problems are those where statics alone can not determine the internal forces or reactions. Consider a structure comprising two cylindrical rods made of steel and brass. These rods are joined at point B and restrained by rigid supports at points A and C. Now, the reactions at points A and C and the deflection at point B are to be determined. This rod structure is classified as statically indeterminate as the structure has more supports than are necessary for maintaining...
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Vector Algebra: Graphical Method01:10

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Vectors can be multiplied by scalars, added to other vectors, or subtracted from other vectors. The vector sum of two (or more) vectors is called the resultant vector or, for short, the resultant.
We use the laws of geometry to construct resultant vectors, followed by trigonometry to find vector magnitudes and directions. For a geometric construction of the sum of two vectors in a plane, we follow the parallelogram rule. Suppose two vectors are at arbitrary positions. Translate either one of...
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Machines: Problem Solving II01:30

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Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. Consider a lifting tong carrying a 100 kg load. It comprises movable sections DAF and CBG linked together with member AB.
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Machines: Problem Solving I01:22

Machines: Problem Solving I

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A toggle clamp is a mechanical device commonly used for holding and clamping objects in various applications, such as woodworking, metalworking, and assembly operations. Consider a toggle clamp subjected to a force of 200 N at the handle. The vertical clamping force can be calculated, provided the dimensions of the toggle clamp are known.
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Data are individual items of information obtained from a population or sample. Data may be classified as qualitative (categorical), quantitative continuous, or quantitative discrete. Because it is not practical to measure the entire population in a study, researchers use samples to represent the population. A random sample is a representative group from the population chosen by using a method that gives each individual in the population an equal chance of being included in the sample. Random...
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Updated: Jun 25, 2025

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ACcoding:用于在线法官编程的基于图形的数据集.

Kairui Chen1, Fuqun Huang2, Zejing Liu1

  • 1Beihang University, School of Software, Beijing, 100191, China.

Scientific data
|May 29, 2024
PubMed
概括
此摘要是机器生成的。

我们介绍ACcoding,这是一个大型基于图形的数据集,用于编程教育,包含六年来数千名学生的数百万条记录. 这一数据集有助于理解学生的学习行为,并提高编程教育质量.

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科学领域:

  • 计算机科学教育计算机科学教育
  • 教育数据挖掘教育数据挖掘

背景情况:

  • 现有的编程教育数据集往往缺乏足够的规模和纵向数据,阻碍了对学生学习模式的深入分析.
  • 有效的编程教育需要全面的数据集,用于绩效跟踪和教学提升.

研究的目的:

  • 介绍ACcoding,一个新的,大规模的,基于图形的数据集,用于教育编程.
  • 为在线法官平台上分析学生学习行为提供丰富的数据源.
  • 支持教育工作者跟踪学生的进步,并选择有针对性的编程任务.

主要方法:

  • 从学生提交的在线法官平台上构建基于图形的数据集.
  • 收集了近28000名学生的400多万个任务解决记录.
  • 数据跨越6年,包括4,559个编程任务.

主要成果:

  • 截至2022年5月6日,ACcoding数据集包含4,046,652个任务解决记录.
  • 数据集包括27,444名学生和4,559个编程任务在6年的时间.
  • 用于追踪学生进度和任务选择的数据集应用程序的演示.

结论:

  • ACcoding为推进编程教育研究提供了一个有价值的,大规模的资源.
  • 数据集的大小和特征使得学生学习动态的详细调查成为可能.
  • ACcoding为教育工作者提供了个性化学习和课程开发的工具.