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The bag-of-words model (BoW) is a model of text which uses an unordered collection (a "bag") of words. It is used in natural language processing and information retrieval (IR). It disregards word order (and thus most of syntax or grammar) but captures multiplicity .
In computer vision, the bag-of-words model (BoW model) sometimes called bag-of-visual-words model [1] [2] can be applied to image classification or retrieval, by treating image features as words. In document classification , a bag of words is a sparse vector of occurrence counts of words; that is, a sparse histogram over the vocabulary.
The most constant is the line, the physical structure and the tracks that trains run over.Each section of the system is assigned a unique line name, usually paired with its original operating company or division: Brooklyn–Manhattan Transit Corporation (BMT), Interborough Rapid Transit Company (IRT), Independent Subway System (IND).
An in-house simpler system developed by MTA for the L train was operational by early 2009 [130] [135] and the first three displays of the larger Siemens system became operational at stations on the IRT Pelham Line (6 and <6> trains) in the Bronx in December 2009. [136]
Meanwhile, the system in Riverdale was extended from Manhattan's extension of the grid north of 155th St, resulting in twenty street numbers more than the rest of the Bronx. The farthest east the numbering scheme goes is Eastchester, where 233rd St terminates. The only avenue to extend into the Bronx is Third Avenue, reaching into Belmont.
After the 2010 Times Square car bombing attempt, city officials increased efforts to expand the prototype surveillance system from Lower Manhattan into other areas of the city. [12] In August 2012, the NYPD in partnership with Microsoft announced the launch of a Domain Awareness System that would cover all of the five boroughs. [13]
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The Manhattan mobility model is a guide which leads the driver of a vehicle on the correct path. It is an urban type of mobility model for vehicular ad-hoc networks (VANET). The Manhattan mobility model uses a "grid road topology. It works optimally where streets are in an organized manner.