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Ground Truth
Ground truth is information that is known to be real or true, provided by direct observation and measurement (i.e. empirical evidence) as opposed to information provided by inference. Etymology The ''Oxford English Dictionary'' (s.v. ''ground truth'') records the use of the word ''Groundtruth'' in the sense of 'fundamental truth' from Henry Ellison's poem "The Siberian Exile's Tale", published in 1833. Usage The term "ground truth" can be used as a noun, adjective, and verb. * Noun: "ground truth" (no hyphen). Example: "The ground truth is essential for training accurate models." * Adjective: "ground-truth" (hyphenated compound adjective). Example: "We need to use ground-truth data to validate the model." * Verb: "to ground-truth" or "to groundtruth" (compound verb,). Example: "We need to ground-truth the results to ensure their accuracy." Statistics and machine learning "Ground truth" may be seen as a conceptual term relative to the knowledge of the truth concerning a spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Empirical Evidence
Empirical evidence is evidence obtained through sense experience or experimental procedure. It is of central importance to the sciences and plays a role in various other fields, like epistemology and law. There is no general agreement on how the terms ''evidence'' and ''empirical'' are to be defined. Often different fields work with quite different conceptions. In epistemology, evidence is what Justification (epistemology), justifies beliefs or what determines whether holding a certain belief is rational. This is only possible if the evidence is possessed by the person, which has prompted various epistemologists to conceive evidence as private mental states like experiences or other beliefs. In philosophy of science, on the other hand, evidence is understood as that which ''Scientific method#Confirmation, confirms'' or ''disconfirms'' Hypothesis#Scientific hypothesis, scientific hypotheses and arbitrates between competing theories. For this role, evidence must be public and uncont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Pixel
In digital imaging, a pixel (abbreviated px), pel, or picture element is the smallest addressable element in a Raster graphics, raster image, or the smallest addressable element in a dot matrix display device. In most digital display devices, pixels are the smallest element that can be manipulated through software. Each pixel is a Sampling (signal processing), sample of an original image; more samples typically provide more accurate representations of the original. The Intensity (physics), intensity of each pixel is variable. In color imaging systems, a color is typically represented by three or four component intensities such as RGB color model, red, green, and blue, or CMYK color model, cyan, magenta, yellow, and black. In some contexts (such as descriptions of camera sensors), ''pixel'' refers to a single scalar element of a multi-component representation (called a ''photosite'' in the camera sensor context, although ''wikt:sensel, sensel'' is sometimes used), while in yet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Calibration
In measurement technology and metrology, calibration is the comparison of measurement values delivered by a device under test with those of a calibration standard of known accuracy. Such a standard could be another measurement device of known accuracy, a device generating the quantity to be measured such as a voltage, a sound tone, or a physical artifact, such as a meter ruler. The outcome of the comparison can result in one of the following: * no significant error being noted on the device under test * a significant error being noted but no adjustment made * an adjustment made to correct the error to an acceptable level Strictly speaking, the term "calibration" means just the act of comparison and does not include any subsequent adjustment. The calibration standard is normally traceable to a national or international standard held by a metrology body. BIPM Definition The formal definition of calibration by the International Bureau of Weights and Measures (BIPM) is the foll ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Baseline (medicine)
A baseline in science (including medicine) is the initial conditions found by observation and measurement at the beginning of a survey or clinical trial or which is used for comparison with later data collected during or after the survey or trial to identify and measure changes, often with the intention of assessing the effects of a treatment or procedure. In environmental science a baseline study is necessary to be able to accurately determine impact by monitoring the environment and comparing the changing situation with the initial conditions after development has occurred. In some cases, baseline information already be available from previous surveys, but it may be necessary to gather data in the field. Example: If a patient with kidney failure (whose creatinine is usually 3.0 mg/dL) suddenly has a creatinine Creatinine (; ) is a breakdown product of creatine phosphate from muscle and protein metabolism. It is released at a constant rate by the body (depending on muscle m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Stars And Stripes (newspaper)
''Stars and Stripes'' is a daily American military newspaper reporting on matters concerning the members of the United States Armed Forces and their communities, with an emphasis on those serving outside the United States. It operates from inside the Department of Defense, but is editorially separate from it, and its First Amendment protection is safeguarded by the United States Congress to whom an independent ombudsman, who serves the readers' interests, regularly reports. As well as a website, ''Stars and Stripes'' publishes a global daily print edition for U.S. military service members serving overseas Monday through Friday. This global edition is also available as a free download in electronic format. The newspaper has its headquarters in Washington, D.C. History Creation On November 9, 1861, during the Civil War, soldiers of the 11th, 18th, and 29th Illinois Regiments set up camp in the Missouri city of Bloomfield. Finding the local newspaper's office empty, they d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
The Ground Truth
''The Ground Truth'' (also known as ''The Ground Truth: After the Killing Ends'') is a 2006 documentary film about veterans of the Iraq War. It was directed and produced by Patricia Foulkrod. Plot The film addresses the issues many soldiers face upon their return from the War in Iraq, including problems with posttraumatic stress disorder and an inability to meld back into "normal" society. The film includes footage of soldiers in Iraq and personal interviews with about two dozen people directly affected by the war (either veterans or family members/friends of veterans). The veterans, both men and women, speak of their experiences before, during, and after the war. The veterans speak about recruitment and training, combat, their returns home, facing their families, and their difficulties in making the necessary changes needed to fit back into society. The Ground Truth was released in theatres on September 15 of 2006 and released on DVD on September 26 of the same year. People ca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Iraq War
The Iraq War (), also referred to as the Second Gulf War, was a prolonged conflict in Iraq lasting from 2003 to 2011. It began with 2003 invasion of Iraq, the invasion by a Multi-National Force – Iraq, United States-led coalition, which resulted in the overthrow of the Ba'athist Iraq, Ba'athist government of Saddam Hussein. The conflict persisted Iraqi insurgency (2003–2011), as an insurgency arose against coalition forces and the newly established Iraqi government. US forces Withdrawal of United States troops from Iraq (2007–2011), were officially withdrawn in 2011. In 2014, the US became re-engaged in Iraq, leading a new coalition under Combined Joint Task Force – Operation Inherent Resolve, as the conflict evolved into the ongoing Islamic State insurgency in Iraq (2017–present), Islamic State insurgency. The Iraq invasion was part of the Presidency of George W. Bush, Bush administration's broader war on terror, launched in response to the September 11 attacks. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Military Slang
Military slang is an array of colloquial terminology used commonly by military personnel, including slang which is unique to or originates with the armed forces. In English-speaking countries, it often takes the form of abbreviations/acronyms or derivations of the NATO Phonetic Alphabet, or otherwise incorporates aspects of formal military terms and concepts. Military slang is often used to reinforce or reflect (usually friendly and Military humor, humorous) interservice rivalries. Acronym slang in the U.S. Military A number of military slang terms are Acronym and initialism, acronyms. Rick Atkinson ascribes the origin of SNAFU (Situation Normal, All Fucked Up), FUBAR (Fucked Up Beyond Any Repair or "All Recognition"), and a bevy of other terms to cynical GI (military), GIs ridiculing the United States Army's penchant for acronyms. Terms then end up being used in other industries as these GIs complete their services. For example, FUBAR evolved into Foobar as GIs coming home from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Mount Rushmore
The Mount Rushmore National Memorial is a National Memorial (United States), national memorial centered on a colossal sculpture carved into the granite face of Mount Rushmore (, or Six Grandfathers) in the Black Hills near Keystone, South Dakota, United States. The sculptor, Gutzon Borglum, named it the ''Shrine of Democracy'', and oversaw the execution from 1927 to 1941 with the help of his son, Lincoln Borglum. The sculpture features the heads of four United States presidents: George Washington, Thomas Jefferson, Theodore Roosevelt, and Abraham Lincoln, respectively chosen to represent the nation's foundation, expansion, development, and preservation. Mount Rushmore attracts more than two million visitors annually to the memorial park which covers . The mountain's elevation is above sea level.Mount Rushmore, South Dakota [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Geographic Information System
A geographic information system (GIS) consists of integrated computer hardware and Geographic information system software, software that store, manage, Spatial analysis, analyze, edit, output, and Cartographic design, visualize Geographic data and information, geographic data. Much of this often happens within a spatial database; however, this is not essential to meet the definition of a GIS. In a broader sense, one may consider such a system also to include human users and support staff, procedures and workflows, the Geographic Information Science and Technology Body of Knowledge, body of knowledge of relevant concepts and methods, and institutional organizations. The uncounted plural, ''geographic information systems'', also abbreviated GIS, is the most common term for the industry and profession concerned with these systems. The academic discipline that studies these systems and their underlying geographic principles, may also be abbreviated as GIS, but the unambiguous GIScie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Vector Map
The Vector Map (VMAP), also called Vector Smart Map, is a vector-based collection of geographic information system (GIS) data about Earth at various levels of detail. Level 0 (low resolution) coverage is global and entirely in the public domain. Level 1 (global coverage at medium resolution) is only partly in the public domain. There are ongoing discussions about making most of the information available in the public domain. Description * Coordinate reference system: Geographic coordinates stored in decimal degrees with southern and western hemispheres using negative values for latitude and longitude, respectively. * Horizontal Datum: World Geodetic System 1984 (WGS 84). *Vertical Datum: Mean Sea Level. Thematic data layers Features and data attributes are tagged utilizing the international Feature and Attribute Coding Catalogue (FACC). #major road networks #railroad networks #hydrologic drainage systems #utility networks (cross-country pipelines and communication lines) #major ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Remote Sensing
Remote sensing is the acquisition of information about an physical object, object or phenomenon without making physical contact with the object, in contrast to in situ or on-site observation. The term is applied especially to acquiring information about Earth and other planets. Remote sensing is used in numerous fields, including geophysics, geography, land surveying and most Earth science disciplines (e.g. exploration geophysics, hydrology, ecology, meteorology, oceanography, glaciology, geology). It also has military, intelligence, commercial, economic, planning, and humanitarian applications, among others. In current usage, the term ''remote sensing'' generally refers to the use of satellite- or airborne-based sensor technologies to detect and classify objects on Earth. It includes the surface and the atmosphere and oceans, based on wave propagation, propagated signals (e.g. electromagnetic radiation). It may be split into "active" remote sensing (when a signal is emitted b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
