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  2. Weissman score - Wikipedia

    en.wikipedia.org/wiki/Weissman_score

    The Weissman score is a performance metric for lossless compression applications. It was developed by Tsachy Weissman, a professor at Stanford University, and Vinith Misra, a graduate student, at the request of producers for HBO's television series Silicon Valley, a television show about a fictional tech start-up working on a data compression algorithm.

  3. List of GNU packages - Wikipedia

    en.wikipedia.org/wiki/List_of_GNU_packages

    GNU Mailman – electronic mailing list management; GNU Mailutils – utilities for electronic mail handling (includes ao. implementations of mail, movemail & mh) [26] GNU MediaGoblin – decentralized media sharing; GNU Artanis – Web Application Framework; GNU Social – distributed social network that is the continuation of the StatusNet ...

  4. WebP - Wikipedia

    en.wikipedia.org/wiki/WebP

    WebP is a raster graphics file format developed by Google intended as a replacement for JPEG, PNG, and GIF file formats. It supports both lossy and lossless compression, [8] as well as animation and alpha transparency.

  5. NumPy - Wikipedia

    en.wikipedia.org/wiki/NumPy

    NumPy (pronounced / ˈ n ʌ m p aɪ / NUM-py) is a library for the Python programming language, adding support for large, multi-dimensional arrays and matrices, along with a large collection of high-level mathematical functions to operate on these arrays. [3]

  6. Image scaling - Wikipedia

    en.wikipedia.org/wiki/Image_scaling

    In the case of decreasing the pixel number (scaling down), this usually results in a visible quality loss. From the standpoint of digital signal processing, the scaling of raster graphics is a two-dimensional example of sample-rate conversion, the conversion of a discrete signal from a sampling rate (in this case, the local sampling rate) to ...

  7. ZIP (file format) - Wikipedia

    en.wikipedia.org/wiki/ZIP_(file_format)

    The .ZIP file format was designed by Phil Katz of PKWARE and Gary Conway of Infinity Design Concepts. The format was created after Systems Enhancement Associates (SEA) filed a lawsuit against PKWARE claiming that the latter's archiving products, named PKARC, were derivatives of SEA's ARC archiving system. [3]

  8. Dimensionality reduction - Wikipedia

    en.wikipedia.org/wiki/Dimensionality_reduction

    The process of feature selection aims to find a suitable subset of the input variables (features, or attributes) for the task at hand.The three strategies are: the filter strategy (e.g., information gain), the wrapper strategy (e.g., accuracy-guided search), and the embedded strategy (features are added or removed while building the model based on prediction errors).

  9. Corruption Perceptions Index - Wikipedia

    en.wikipedia.org/wiki/Corruption_Perceptions_Index

    Note that a lower rating on this scale reflects greater corruption so that countries with higher RGDPs generally had less corruption.) Alex Cobham of the Center for Global Development reported in 2013 that "many of the staff and chapters" at Transparency International , the publisher of the Corruption Perceptions Index, "protest internally ...