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  2. Scale invariance - Wikipedia

    en.wikipedia.org/wiki/Scale_invariance

    The Wiener process is scale-invariant. In physics, mathematics and statistics, scale invariance is a feature of objects or laws that do not change if scales of length, energy, or other variables, are multiplied by a common factor, and thus represent a universality.

  3. Scale-free network - Wikipedia

    en.wikipedia.org/wiki/Scale-free_network

    However, there's a key difference. In statistical field theory, the term "scale" often pertains to system size. In the realm of networks, "scale" is a measure of connectivity, generally quantified by a node's degree—that is, the number of links attached to it. Networks featuring a higher number of high-degree nodes are deemed to have greater ...

  4. List of system quality attributes - Wikipedia

    en.wikipedia.org/wiki/List_of_system_quality...

    These are sometimes named architecture characteristics, or "ilities" after the suffix many of the words share. They are usually architecturally significant requirements that require architects' attention. [1] In software architecture, these attributed are known as "architectural characteristic" or non-functional requirements.

  5. Systems analysis - Wikipedia

    en.wikipedia.org/wiki/Systems_analysis

    Systems analysis is "the process of studying a procedure or business to identify its goal and purposes and create systems and procedures that will efficiently achieve them". Another view sees systems analysis as a problem-solving technique that breaks a system down into its component pieces and analyses how well those parts work and interact to ...

  6. Systems architecture - Wikipedia

    en.wikipedia.org/wiki/Systems_architecture

    An architecture description is a formal description and representation of a system, organized in a way that supports reasoning about the structures and behaviors of the system. A system architecture can consist of system components and the sub-systems developed, that will work together to implement the overall system. There have been efforts to ...

  7. Scale-invariant feature transform - Wikipedia

    en.wikipedia.org/wiki/Scale-invariant_feature...

    Alternative methods for scale-invariant object recognition under clutter / partial occlusion include the following. RIFT [38] is a rotation-invariant generalization of SIFT. The RIFT descriptor is constructed using circular normalized patches divided into concentric rings of equal width and within each ring a gradient orientation histogram is ...

  8. Complex network - Wikipedia

    en.wikipedia.org/wiki/Complex_network

    Examples of networks with a single scale include the ErdÅ‘s–Rényi (ER) random graph, random regular graphs, regular lattices, and hypercubes. Some models of growing networks that produce scale-invariant degree distributions are the Barabási–Albert model and the fitness model. In a network with a scale-free degree distribution, some ...

  9. System analysis - Wikipedia

    en.wikipedia.org/wiki/System_analysis

    System analysis in the field of electrical engineering characterizes electrical systems and their properties. System analysis can be used to represent almost anything from population growth to audio speakers; electrical engineers often use it because of its direct relevance to many areas of their discipline, most notably signal processing, communication systems and control systems.