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  2. Portal (series) - Wikipedia

    en.wikipedia.org/wiki/Portal_(series)

    Portal is a series of first-person puzzle-platform video games developed by Valve.Set in the Half-Life universe, the two main games in the series, Portal (2007) and Portal 2 (2011), center on a woman, Chell, forced to undergo a series of tests within the Aperture Science Enrichment Center by a malicious artificial intelligence, GLaDOS, that controls the facility.

  3. Central limit theorem - Wikipedia

    en.wikipedia.org/wiki/Central_limit_theorem

    An important example of a log-concave density is a function constant inside a given convex body and vanishing outside; it corresponds to the uniform distribution on the convex body, which explains the term "central limit theorem for convex bodies". Another example: f(x 1, ..., x n) = const · exp(−(| x 1 | α + ⋯ + | x n | α) β) where α ...

  4. Delta 4000 - Wikipedia

    en.wikipedia.org/wiki/Delta_4000

    66 kN (15,000 lb f) Specific impulse. 286 s. Burn time. 87 s. [ edit on Wikidata] The Delta 4000 series was an American expendable launch system which was used to conduct two orbital launches in 1989 and 1990. It was a member of the Delta family of rockets. Although several variants were put forward, only the Delta 4925 was launched.

  5. Spirit Airlines - Wikipedia

    en.wikipedia.org/wiki/Spirit_Airlines

    Spirit Airlines, Inc., stylized as spirit, is a major American ultra-low cost airline headquartered in Dania Beach, Florida, in the Miami metropolitan area. Spirit operates scheduled flights throughout the United States, the Caribbean and Latin America. Spirit was the seventh largest passenger carrier in North America as of 2023, as well as the ...

  6. Grumman F-14 Tomcat - Wikipedia

    en.wikipedia.org/wiki/Grumman_F-14_Tomcat

    1969–1991. Number built. 712. The Grumman F-14 Tomcat is an American carrier-capable supersonic, twin-engine, two-seat, twin-tail, all-weather-capable variable-sweep wing fighter aircraft. The Tomcat was developed for the United States Navy 's Naval Fighter Experimental (VFX) program after the collapse of the General Dynamics-Grumman F-111B ...

  7. Transformer (deep learning architecture) - Wikipedia

    en.wikipedia.org/wiki/Transformer_(deep_learning...

    A transformer is a deep learning architecture developed by Google and based on the multi-head attention mechanism, proposed in a 2017 paper "Attention Is All You Need". [1] Text is converted to numerical representations called tokens, and each token is converted into a vector via looking up from a word embedding table. [1]

  8. Boeing 747 - Wikipedia

    en.wikipedia.org/wiki/Boeing_747

    The Boeing 747 is a long-range wide-body airliner designed and manufactured by Boeing Commercial Airplanes in the United States between 1968 and 2023. After the introduction of the 707 in October 1958, Pan Am wanted a jet times its size, to reduce its seat cost by 30%. In 1965, Joe Sutter left the 737 development program to design the 747.

  9. Janet Jackson - Wikipedia

    en.wikipedia.org/wiki/Janet_Jackson

    Janet Damita Jo Jackson (born May 16, 1966) is an American singer, songwriter, actress, and dancer. She is noted for her innovative, socially conscious and sexually provocative records, as well as elaborate stage shows. Her sound and choreography became a catalyst in the growth of MTV, enabling her to rise to prominence while breaking gender ...