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  2. Cadastral surveying - Wikipedia

    en.wikipedia.org/wiki/Cadastral_surveying

    Cadastral surveying is the sub-field of cadastre and surveying that specialises in the establishment and re-establishment of real property boundaries. It involves the physical delineation of property boundaries and determination of dimensions, areas and certain rights associated with properties. This is regardless of whether they are on land ...

  3. Dimension (data warehouse) - Wikipedia

    en.wikipedia.org/wiki/Dimension_(data_warehouse)

    The dimension is a data set composed of individual, non-overlapping data elements. The primary functions of dimensions are threefold: to provide filtering, grouping and labelling. These functions are often described as "slice and dice". A common data warehouse example involves sales as the measure, with customer and product as dimensions.

  4. Lot and block survey system - Wikipedia

    en.wikipedia.org/wiki/Lot_and_block_survey_system

    Lot and block survey system. A contemporary plat map used in the lot and block system. The lot and block survey system is a method used in the United States and Canada to locate and identify land, particularly for lots in densely populated metropolitan areas, suburban areas and exurbs. It is sometimes referred to as the recorded plat survey ...

  5. Determining the number of clusters in a data set - Wikipedia

    en.wikipedia.org/wiki/Determining_the_number_of...

    The average silhouette of the data is another useful criterion for assessing the natural number of clusters. The silhouette of a data instance is a measure of how closely it is matched to data within its cluster and how loosely it is matched to data of the neighboring cluster, i.e., the cluster whose average distance from the datum is lowest. [8]

  6. Social media - Wikipedia

    en.wikipedia.org/wiki/Social_media

    The PLATO system was launched in 1960 at the University of Illinois and subsequently commercially marketed by Control Data Corporation.It offered early forms of social media features with innovations such as Notes, PLATO's message-forum application; TERM-talk, its instant-messaging feature; Talkomatic, perhaps the first online chat room; News Report, a crowdsourced online newspaper, and blog ...

  7. N50, L50, and related statistics - Wikipedia

    en.wikipedia.org/wiki/N50,_L50,_and_related...

    The contig lengths of assembly B are the same as those of assembly A, except for the presence of two additional contigs with lengths of 10 kbp and 5 kbp. The size of assembly B is 305 kbp, the N50 contig length drops to 50 kbp because 80 + 70 + 50 is greater than 50% of 305, and the L50 contig count is 3 contigs.

  8. Internet of things - Wikipedia

    en.wikipedia.org/wiki/Internet_of_things

    As there are a lot of benefits to be gained from IoT and IIoT devices, the means in which the data is stored can present serious challenges without the principles of autonomy, transparency, and interoperability being considered. [254] The challenges do not occur by the device itself, but the means in which databases and data warehouses are set-up.

  9. Pennsylvania - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania

    Pennsylvania (/ ˌ p ɛ n s ɪ l ˈ v eɪ n i ə / ⓘ PEN-sil-VAY-nee-ə, lit. ' Penn's forest country '), officially the Commonwealth of Pennsylvania [b] (Pennsylvania Dutch: Pennsylvanie), [7] is a US state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States.