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相关概念视频

How Data are Classified: Categorical Data01:11

How Data are Classified: Categorical Data

34.0K
A variable, usually notated by capital letters such as X and Y, is a characteristic or measurement that can be determined for each member of a population. Data are the actual values of variables. They may be numbers, or they may be words. Datum is a single value.
Data are classified based on whether they are measurable or not. Categorical data cannot be measured; instead, it can be divided into categories. For example, if Y denotes a person's party affiliation, some examples of Y include...
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Base Quantities and Derived Quantities01:14

Base Quantities and Derived Quantities

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In any system of units, the units for some physical quantities must be specified through a measurement process. These measurements are the base quantities of the system, and their units are the base units of the system. The algebraic combinations of the base values can then be used to express all other physical quantities. Each of these physical quantities is then referred to as a derived quantity, with each unit being referred to as a derived unit.
The International Organization for...
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Relating Angular And Linear Quantities - I01:09

Relating Angular And Linear Quantities - I

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If the rotational definitions are compared with the definitions of linear kinematic variables from motion along a straight line and motion in two and three dimensions, we can observe a mapping of the linear variables to the rotational ones.
When comparing the linear and rotational variables individually, the linear variable of position has physical units of meters, whereas the angular position variable has dimensionless units of radians, as it is the ratio of two lengths. The linear velocity...
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Nominal Level of Measurement00:56

Nominal Level of Measurement

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The way a set of data is measured is called its level of measurement. Correct statistical procedures depend on a researcher being familiar with levels of measurement. Not every statistical operation can be used with every set of data. For analysis, data are classified into four levels of measurement—nominal, ordinal, interval, and ratio.
The data that cannot be measured but can be grouped into categories fall under the nominal level of measurement. Data that is measured using a nominal...
29.7K
Bar Graph01:07

Bar Graph

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A bar graph is also called a bar chart and consists of bars that are separated from each other. It either uses horizontal or vertical bars to show comparisons among categories. The bars can be rectangles, or they can be rectangular boxes (used in three-dimensional plots). One axis of the graph represents the specific categories being compared, and the other axis shows a discrete value. In this graph, the length of the bar for each category is proportional to the number or percent of individuals...
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Relating Angular And Linear Quantities - II01:05

Relating Angular And Linear Quantities - II

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In the case of circular motion, the linear tangential speed of a particle at a radius from the axis of rotation is related to the angular velocity by the relation:
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Using the Race Model Inequality to Quantify Behavioral Multisensory Integration Effects
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一个通用的交互式会员函数用于数量的分类.

Liqun Liu, Romain Vuillemot

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    此摘要是机器生成的。

    这项研究引入了一种新的用户交互技术,用于对可调置置信度级别的量进行分类. 该开源工具允许定制数据分类,并为用户增强视觉数据分析.

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    相关实验视频

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    科学领域:

    • 数据可视化 数据可视化
    • 人与计算机的交互
    • 模糊的逻辑 模糊的逻辑

    背景情况:

    • 传统的数据分类方法往往缺乏灵活性来处理不确定性.
    • 现有的视觉数据分析工具可能不能充分支持用户定义的分类与信心度.

    研究的目的:

    • 研究一种通用的用户交互技术,用于使用会员函数对各种数量进行分类.
    • 为了使用户能够在分类中表达不确定性,并改进视觉数据分析.

    主要方法:

    • 开发了一种基于通用成员函数的技术,用于数量分类.
    • 创建了一个在线交互式原型来演示该技术.
    • 进行了三项案例研究和一项正式的用户研究,以评估有效性和用户推理.

    主要成果:

    • 该技术有效地支持用户为各种数量创建定制类别.
    • 用户研究证实了该技术在增强视觉数据分析和表达不确定性的实用性.
    • 这种方法在不同类型的数量中被证明是多功能性的.

    结论:

    • 开发的技术提供了一个灵活的,以用户为中心的方法,以信心地对数据进行分类.
    • 开源代码和原型有助于在各种应用领域广泛采用.
    • 这种方法显著提高了用户控制和视觉数据分析的洞察力.