nonnegative

简明释义

英[ˈnɒnˈneɡətɪv]美[nɑːnˈneɡətɪv]

adj. 正的，非负的

英英释义

单词用法

同义词

反义词

例句

1.A parabolic system with nonlinear boundary conditions is considered. T he existence and uniqueness of a nonnegative classical solution are proved to this problem.

考虑了一个具有非线性边界条件的抛物系统，证明了这个问题非负古典解的存在唯一性。

2.The existence and uniqueness of nonnegative solution for a class of age-structured SEIR epidemic model;

通过初等方法，证明了此冗余系统非负解的存在唯一性。

3.In this paper, we discuss the problem of optimal combination forecasting subject to nonnegative investment proportional coefficient.

研究非负权系数约束下的最优组合预测问题。

4.Those main proofs of this part are based on nonnegative.

这一部分结果的论证建立在非负矩阵的理论基础上。

5.The paper raises and proves an essential condition of volumetric property of nonnegative secondary estimation of deviation and variance in linear model.

文中给出并证明了在椭球约束条件下线性模型中，误差方差的非负二次估计的可容许性问题的一个必要条件。

6.One of well-known results is that the greatest eigenvalue of a nonnegative matrix lies between the smallest and the largest row sum.

一个著名的结果是一个非负矩阵的最大特征值在它的最小行和与最大行和之间。

7.The algorithm requires nonnegative weights for optimization purposes.

该算法要求权重为非负以进行优化。

8.You can use nonnegative integers to represent counts of items.

你可以使用非负整数来表示物品的数量。

9.In mathematics, a nonnegative number is one that is either positive or zero.

在数学中，非负数是指大于或等于零的数。

10.The function only accepts nonnegative inputs to avoid errors.

该函数只接受非负输入以避免错误。

11.All the values in the dataset must be nonnegative to ensure accurate analysis.

数据集中的所有值必须是非负的，以确保分析的准确性。

作文

In mathematics, the term nonnegative refers to numbers that are either positive or zero. This concept is crucial in various fields such as statistics, economics, and computer science. Understanding nonnegative values is essential for analyzing data accurately and making informed decisions. For instance, when conducting a survey, if the results show a nonnegative response rate, it indicates that all participants either agreed or remained neutral, which can influence the interpretation of the data. Furthermore, in optimization problems, constraints are often set to ensure that certain variables remain nonnegative. This is particularly important in linear programming, where negative values could lead to unrealistic solutions. For example, if one were to model the production of goods, having nonnegative quantities ensures that the model reflects a feasible scenario where production levels cannot be less than zero.In the realm of finance, nonnegative cash flows are vital for assessing the viability of investments. A project with nonnegative cash flow projections suggests that it will generate enough revenue to cover its costs, thus making it an attractive opportunity for investors. Conversely, negative cash flows could indicate potential losses and deter investment.Moreover, in computer programming, algorithms often require inputs to be nonnegative to function correctly. For example, when developing a program for calculating the square root of a number, the input must be nonnegative because the square root of a negative number is not defined in the set of real numbers. This requirement highlights the importance of validating inputs to avoid errors and ensure the reliability of the program.In addition to these practical applications, the concept of nonnegative extends to philosophical discussions about positivity and negativity in life. Many people strive to maintain a nonnegative outlook, focusing on the positive aspects of situations rather than dwelling on the negatives. This mindset can lead to improved mental health and overall well-being, demonstrating that the principles of nonnegative values can be applied beyond mathematics and into our daily lives.To summarize, the term nonnegative encompasses a range of meanings across different disciplines. Whether in mathematics, finance, programming, or personal development, understanding and applying the concept of nonnegative can lead to more accurate analyses, better decision-making, and a healthier perspective on life. As we continue to navigate through various challenges, embracing a nonnegative approach can empower us to achieve our goals and foster a more positive environment for ourselves and others.

在数学中，术语非负指的是既可以是正数也可以是零的数字。这个概念在统计学、经济学和计算机科学等多个领域中至关重要。理解非负值对于准确分析数据和做出明智决策是必不可少的。例如，在进行调查时，如果结果显示非负的响应率，这表明所有参与者要么同意，要么保持中立，这可能会影响数据的解读。此外，在优化问题中，通常设定约束条件以确保某些变量保持非负。这在线性规划中尤为重要，因为负值可能导致不切实际的解决方案。例如，如果有人要对商品的生产进行建模，保持非负的数量可以确保模型反映出一个可行的场景，即生产水平不能低于零。在金融领域，非负现金流对于评估投资的可行性至关重要。一个项目如果有非负的现金流预测，说明它将产生足够的收入来覆盖成本，从而使其成为投资者的一个有吸引力的机会。相反，负现金流可能表示潜在的损失，从而阻碍投资。此外，在计算机编程中，算法通常要求输入为非负才能正常运行。例如，在开发一个计算数字平方根的程序时，输入必须为非负，因为负数的平方根在实数集中是未定义的。这个要求强调了验证输入的重要性，以避免错误并确保程序的可靠性。除了这些实际应用外，非负的概念还延伸到关于生活中积极与消极的哲学讨论。许多人努力保持非负的心态，专注于情况的积极方面，而不是沉溺于消极之中。这种思维方式可以改善心理健康和整体幸福感，表明非负值的原则不仅可以应用于数学，还可以融入我们的日常生活。总之，术语非负在不同学科中涵盖了多种含义。无论是在数学、金融、编程还是个人发展中，理解和应用非负的概念都可以带来更准确的分析、更好的决策以及更健康的生活观。随着我们继续应对各种挑战，接受非负的方法可以赋予我们实现目标的能力，并为自己和他人营造一个更积极的环境。