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scalar    音标拼音: [sk'elɚ]
n. 数量
a. 数量的,分等级的,梯状的

数量数量的,分等级的,梯状的

scalar
纯量; 纯量的

scalar
量 纯量

scalar
adj 1: of or relating to a musical scale; "he played some basic
scalar patterns on his guitar"
2: of or relating to a directionless magnitude (such as mass or
speed etc.) that is completely specified by its magnitude;
"scalar quantity"
n 1: a variable quantity that cannot be resolved into components

Scalar \Sca"lar\, n. (Math.)
In the quaternion analysis, a quantity that has magnitude,
but not direction; -- distinguished from a vector, which has
both magnitude and direction.
[1913 Webster]


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  • terminology - What does it mean when data is scalar? - Software . . .
    The term "scalar" comes from linear algebra, where it is used to differentiate a single number from a vector or matrix The meaning in computing is similar It distinguishes a single value like an integer or float from a data structure like an array This distinction is very prominent in Perl, where the $ sigil (which resembles an 's') is used to denote a scalar variable and an @ sigil (which
  • What are the scalar fields and composite fields in JAVA?
    The terms 'scalar type' or 'scalar field' are usually used to contrast them with compound types fields A compound type is easiest to define and it is a type that contains multiple distinct elements These elements can have the same type, in which case the compound is an array or a list, or different types, in which case the compound is typically a struct or a class A scalar type is a type
  • Why exactly does Java not allow numeric conditionals like if(5 . . .
    0 Well, every scalar type in C, pointer, boolean (since C99), number (floating-point or not) and enumeration (due to direct mapping to numbers) has a "natural" falsey value, so that's good enough for any conditional expression
  • data structures - How to represent a set in JSON? - Software . . .
    JSON supports the following data structures (Java equivalents): Scalar, Array List, and Map A Set is not supported out-of-the-box in JSON I thought about several ways to represent a set in JSON
  • web api - Use empty string, null or remove empty property in API . . .
    When transferring object through an API, as in schemaless JSON format, what is the ideal way to return non-existent string property? I know that there are different ways of doing this as in example
  • What is meant by a primitive data type?
    It kind of depends on the language For example, in languages like C and C++, you have a number of built-in scalar types - int, float, double, char, etc These are "primitive" in the sense that they cannot be decomposed into simpler components From these basic types you can define new types - pointer types, array types, struct types, union types, etc Then you have a language like old-school
  • performance - Why does expressing calculations as matrix . . .
    If I were to calculate the matrix multiplication in the second (matrix-based) image myself, as a human, I'd do it by sequentially doing each of the distinct calculations shown in the first (scalar) image
  • artificial intelligence - How to run 2-layer perceptron to solve XOR . . .
    You seem to be attempting to train your second layer's single perceptron to produce an XOR of its inputs This isn't possible; a single perceptron can only learn to classify inputs that are linearly separable The usual solution to solving the XOR problem with perceptrons is to use a two-layer network with the back propagation algorithm, so that the hidden layer nodes learn to classify one
  • Algorithm for detection of overlapping between vectors
    I am currently developing a math-physics program and I need to calculate if two vectors overlap one another, the one is vertical and the other is horizontral Is there any fast algorithm to do this





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