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相关概念视频

Water and Mineral Acquisition02:34

Water and Mineral Acquisition

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Specialized tissues in plant roots have evolved to capture water, minerals, and some ions from the soil. Roots exhibit a variety of branching patterns that facilitate this process. The outermost root cells have specialized structures called root hairs that increase the root surface, thus increasing soil contact. Water can passively cross into roots, as the concentration of water in the soil is higher than that of the root tissue. Minerals, in contrast, are actively transported into root cells.
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Quarrying of Stone01:15

Quarrying of Stone

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Quarrying is the process of extracting stone from a quarry, where specialized techniques are employed to remove large blocks of stone safely and efficiently. This process can involve controlled explosions or more precision-oriented methods such as cutting and drilling.
One common method involves using a diamond belt saw to cut large blocks from the quarry face. These blocks can be about 50 feet long and 12 feet high. After the initial vertical cut, drilling is performed at the base of the...
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Calcium is an essential signaling molecule required for various cellular functions. Calcium pumps and ion channels on cell and organellar membranes, such as those on the endoplasmic reticulum (ER), regulate calcium concentrations inside the cell. They remain closed, keeping the cytosolic calcium levels low at a resting state.
Various transmembrane receptors, such as G protein-coupled receptors (GPCRs), elicit a response to extracellular signals by increasing cytosolic calcium. Activated GPCRs...
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Robbers Cave04:49

Robbers Cave

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During the 1950s, the landmark Robbers Cave experiment demonstrated that when groups must compete with one another, intergroup conflict, hostility, and even violence may result. At the Oklahoman summer camp, two troops of boys—termed the Rattlers and the Eagles—took part in a week-long tournament. During this time, their negativity culminated in derogatory name-calling, fistfights, and even vandalism and destruction of property. However, this work also revealed that such tension...
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Positive and Negative Feedback Loops01:18

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Animal organs and organ systems constantly adjust to internal and external changes through a process called homeostasis ("steady state"). Examples of these changes include regulation of the level of glucose or calcium in the blood or internal responses to external temperatures. Homeostasis requires  maintaining an internal dynamic equilibrium:
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Aggregates contain pores of varying sizes; while some are completely enclosed within the particles, others open onto the surface, allowing water to penetrate. The porosity of aggregates is a major factor contributing to the overall porosity of concrete, given that aggregates constitute about three-quarters of concrete's volume.
When all pores in an aggregate are filled with water, the aggregate is considered saturated and surface-dry. If left in dry air, water will evaporate until the...
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相关实验视频

Updated: Jun 25, 2025

Cloud-Based Phrase Mining and Analysis of User-Defined Phrase-Category Association in Biomedical Publications
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Python 数据旅程:挖掘来自google play商店的用户反.

Affan Yasin1, Rubia Fatima2, Ahmad Nauman Ghazi3

  • 1School of Software, Northwestern Polytechnical University, Xian, 710072, Shaanxi, China.

Data in brief
|May 21, 2024
PubMed
概括
此摘要是机器生成的。

这项研究收集了超过429,000个Google Play游戏应用程序评论,以构建一个数据集. 这些有价值的数据有助于要求工程,机器学习和应用程序开发的竞争分析.

关键词:
应用程序评价 应用程序评价众包数据数据的数据来源.数据挖掘是一种数据挖掘.在NLP中,我们使用了NLP.用户评论 用户评论

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科学领域:

  • 软件工程 软件工程 软件工程
  • 数据科学数据科学数据科学
  • 人与计算机的交互

背景情况:

  • 谷歌Play商店是一个主要的应用市场,每天有数以百万计的用户提供宝贵的反.
  • 用户评论提供了对应用程序缺陷,功能建议和潜在改进的见解.
  • 对应用程序开发人员和旨在实现市场增长的企业来说,分析这些反至关重要.

研究的目的:

  • 收集和分析用户评论从谷歌游戏商店的流行的游戏应用程序.
  • 使用需求工程,机器学习和竞争评估构建一个全面的数据集,用于随后的分析.

主要方法:

  • 利用基于Python的网络抓取,从选定的Google Play应用页面中提取超过429,000条评论.
  • 收集了评论员的名字 (匿名),星级评分,以及用户评论的文字内容.
  • 专注于领先的游戏应用程序,如地铁冲浪者,糖果粉碎萨加和PUBG移动.

主要成果:

  • 一个数据集超过429,000用户评论,评级和元数据被成功编译.
  • 该数据集包括关于流行的移动游戏的详细反,提供了丰富的用户情绪来源.
  • 这个集合为数据分析和行业级竞争评估的学术培训提供了宝贵的资源.

结论:

  • 编制的Google Play评论数据集是了解用户需求和应用程序性能的一个重要资源.
  • 它在要求工程和用于游戏应用程序改进的机器学习等领域促进了先进的分析.
  • 这些发现突显了用户生成内容在推动应用程序开发和市场战略方面的潜力.