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相关概念视频

The Phragmoplast01:59

The Phragmoplast

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Cell division is essential for organismal growth and development. In animal cells, the central spindle and its associated proteins form the midbody, a structure that has an essential role in cytokinesis. In plants, the central spindle, along with the microtubules, actin, and other cell components, matures into the phragmoplast, which is necessary for cytokinesis. Unlike the stationary midbody, the phragmoplast expands centrifugally, eventually leading to the formation of the new cell wall.
The...
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Decision Making: P-value Method01:09

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The process of hypothesis testing based on the P-value method includes calculating the P- value using the sample data and interpreting it.
First, a specific claim about the population parameter is proposed. The claim is based on the research question and is stated in a simple form. Further, an opposing statement to the claim  is also stated. These statements can act as null and alternative hypotheses:  a null hypothesis would be a neutral statement while the alternative hypothesis can...
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Phasors01:12

Phasors

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Phasors are a powerful mathematical tool used to analyze alternating current (AC) circuits. They provide a complex number representation of sinusoids, with the magnitude of the phasor equating to the amplitude of the sinusoid and the angle of the phasor representing the phase measured from the positive x-axis.
One of the significant benefits of using phasors is that they simplify the analysis of AC circuits by eliminating the time dependence of the current and voltage. This transformation...
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The representative heuristic describes a biased way of thinking, in which you unintentionally stereotype someone or something. For example, you may assume that your professors spend their free time reading books and engaging in intellectual conversation, because the idea of them spending their time playing volleyball or visiting an amusement park does not fit in with your stereotypes of professors.
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Phasor Arithmetics01:13

Phasor Arithmetics

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Phasors and their corresponding sinusoids are interrelated, offering unique insights into the behavior of alternating current (AC) circuits. One way to understand this relationship is through the operations of differentiation and integration in both the time and phasor domains.
When the derivative of a sinusoid is taken in the time domain, it transforms into its corresponding phasor multiplied by j-omega (jω) in the phasor domain, where j is the imaginary unit, and ω is the angular...
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Agonism and Antagonism: Quantification01:14

Agonism and Antagonism: Quantification

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When drugs are administered, they can elicit either an agonist or antagonist effect on the body. Agonism occurs when a drug activates a specific receptor, triggering a biological response. On the other hand, antagonism happens when a drug binds to the same receptors but blocks their activation, thereby preventing a biological response.
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Detection of Architectural Distortion in Prior Mammograms via Analysis of Oriented Patterns
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弗拉格门的投票方法和合理的代表性.

Markus Brill1,2, Rupert Freeman3, Svante Janson4

  • 1TU Berlin, Berlin, Germany.

Mathematical programming
|February 12, 2024
PubMed
概括

弗拉格曼的委员会选择方法平衡了选民负载. 顺序方法实现了比例合理代表,而优化方法确保了完美的代表,为公平的投票系统提供了新的见解.

科学领域:

  • 社会选择理论社会选择理论
  • 计算式的社会选择
  • 政治科学 政治科学是指政治学.

背景情况:

  • 爱德华·弗拉格曼 (Edvard Phragmén) 19世纪末的负载平衡方法,用于使用批准选票进行委员会的选择.
  • 现有的委员会投票规则往往难以平衡公平性和代表性.
  • 准则分析对于理解投票系统的特性至关重要.

研究的目的:

  • 从公理的角度研究Phragmén的委员会选择方法.
  • 专注于在委员会组建中获得比例代表的物业.
  • 分析计算复杂性,并为Phragmén的方法开发算法.

主要方法:

  • 研究了三个基于Phragmén的委员会投票规则:两个优化变体 (最小-最大负载,最小-变量负载) 和一个顺序变体.
  • 采用了公理方法来评估与比例表示相关的属性.
  • 利用混合整数编程用于计算分析和算法开发.

主要成果:

  • 顺序的Phragmén变体满足比例合理代表,这是单调委员会方法的罕见属性.
  • Phragmén的方法的优化变体实现了完美的表示.
  • 分析了计算复杂性,并开发了基于混合整数编程的算法.
关键词:
91B14 91B14 91B14 91B14 91B14 91B14 91B14 91B14 91B14 91B14 91B14 91B14 91B14 91B14 91B14

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结论:

  • 弗拉格曼的方法提供了有价值的工具,以实现委员会选择中的比例代表.
  • 识别的属性 (比例合理表示和完美表示) 强调了这些方法的优势.
  • 开发的算法为在计算环境中实现Phragmén的方法提供了实际手段.