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相关概念视频

Acceleration Vectors01:30

Acceleration Vectors

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In everyday conversation, accelerating means speeding up. Acceleration is a vector in the same direction as the change in velocity, Δv, therefore the greater the acceleration, the greater the change in velocity over a given time. Since velocity is a vector, it can change in magnitude, direction, or both. Thus acceleration is a change in speed or direction, or both. For example, if a runner traveling at 10 km/h due east slows to a stop, reverses direction, and continues their run at 10 km/h...
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Trial and Error and Algorithm01:12

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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

Statically Indeterminate Problem Solving

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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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Ampere-Maxwell's Law: Problem-Solving01:17

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A parallel-plate capacitor with capacitance C, whose plates have area A and separation distance d, is connected to a resistor R and a battery of voltage V. The current starts to flow at t = 0. What is the displacement current between the capacitor plates at time t? From the properties of the capacitor, what is the corresponding real current?
To solve the problem, we can use the equations from the analysis of an RC circuit and Maxwell's version of Ampère's law.
For the first part of...
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RACE - Rapid Amplification of cDNA Ends02:35

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Rapid Amplification of cDNA Ends, or RACE, is one of the most effective methods to obtain a full-length cDNA from an mRNA sequence between a known internal region to the unknown sequence at the 5’ or 3’ end. The unknown region is cloned in the cDNA by a gene-specific primer that binds the known end, and a hybrid primer that attaches a predefined anchor sequence to the unknown end of the cDNA. The sequence in between is amplified by PCR with an anchor primer and a gene-specific...
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Updated: Jun 6, 2025

Author Spotlight: Universal Molecular Retention with 11-Fold Expansion Microscopy
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Author Spotlight: Universal Molecular Retention with 11-Fold Expansion Microscopy

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ExCS:通过代码扩展加速代码搜索.

Siwei Huang1,2, Bo Cai3,4, Yaoxiang Yu1,2

  • 1School of Cyber Science and Engineering, Wuhan University, Wuhan, 430072, China.

Scientific reports
|November 25, 2024
PubMed
概括
此摘要是机器生成的。

我们开发了ExCS,这是一种新的代码搜索工具,可以显著加快代码检索速度. ExCS 减少了 90% 的搜索时间,同时保持了 99% 的准确性,提高了开发人员的生产力.

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科学领域:

  • 计算机科学 计算机科学
  • 软件工程 软件工程 软件工程
  • 信息检索 信息检索

背景情况:

  • 开发人员的生产力依赖于大型代码库中的高效代码搜索.
  • 深度学习模型提供高精度,但由于维度和缓慢的检索时间,面临计算挑战.
  • 传统的信息检索 (IR) 方法比深度学习模型更快,但不那么准确.

研究的目的:

  • 推出ExCS,这是一款创新的代码搜索工具,旨在在不牺牲准确性的情况下加速代码搜索.
  • 在代码搜索中解决高维深度学习模型所带来的计算挑战.
  • 提高在线代码检索流程的效率.

主要方法:

  • 在离线阶段,ExCS利用代码扩展,预测潜在的查询以丰富代码语义.
  • 在在线检索过程中,ExCS使用基于IR的方法来识别一组专注的相关代码候选者.
  • 在CodeSearchNet集中的Java数据集上进行了评估.

主要成果:

  • 通过ExCS实现了90%的检索时间缩短.
  • ExCS保持了令人印象深刻的99%的检索准确度.
  • 该工具有效地平衡了代码搜索中的速度和准确性.

结论:

  • 在代码搜索效率方面,ExCS提供了显著的改进.
  • 开发的方法通过离线代码扩展来增强语义深度.
  • 在大型代码库中,ExCS为快速准确的代码检索提供了一个实用的解决方案.