About: Inverse problem     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:WikicatAlgorithms, within Data Space : dbpedia.org associated with source document(s)
QRcode icon
http://dbpedia.org/describe/?url=http%3A%2F%2Fdbpedia.org%2Fresource%2FInverse_problem

An inverse problem in science is the process of calculating from a set of observations the causal factors that produced them: for example, calculating an image in X-ray computed tomography, source reconstruction in acoustics, or calculating the density of the Earth from measurements of its gravity field. It is called an inverse problem because it starts with the effects and then calculates the causes. It is the inverse of a forward problem, which starts with the causes and then calculates the effects.

AttributesValues
rdf:type
rdfs:label
  • Inverses Problem (de)
  • Problema inverso (es)
  • Problème inverse (fr)
  • Inverse problem (en)
  • Problema inverso (it)
  • 역문제 (ko)
  • 逆問題 (ja)
  • Problem odwrotny (pl)
  • Problema inverso (pt)
  • Обратная задача (ru)
  • 逆問題 (zh)
rdfs:comment
  • 역문제(逆問題, inverse problem)는 신호로부터 신호원을 찾는 등 원래문제와 반대 문제를 말한다. 정칙화 기법이 이용되기도 한다. (ko)
  • 逆問題(ぎゃくもんだい、英: inverse problem)とは、数学・物理学の一分野であり、入力(原因)から出力(結果、観測)を求める問題を順問題(じゅんもんだい、英: direct problem)と呼び、その逆に出力から入力を推定する問題や入出力の関係性を推定する問題を逆問題と呼ぶ。 (ja)
  • Problem odwrotny (zagadnienie odwrotne, ang. Inverse problem) – zadanie, które często występuje w różnych gałęziach nauki czy matematyki, gdzie niektóre parametry modelu muszą być wyznaczone na podstawie obserwowanych wartości. (pl)
  • 逆问题是一个关于如何将观测和测量的结果转换为物体或系统的信息的广义框架。比如,如果我们有一个关于地球重力场的测量结果,我们就会问:「利用现有的訊息,我们能否得到地球的密度分布?」。这类问题的解(即最符合测量数据的密度分布)通常就可以告诉我们一个无法直接测量的物理量。因此,逆问题是在数学和物理学中最重要和被研究的最多的问题之一。逆问题广泛的出现在诸如计算机视觉,自然语言处理,机器学习,统计学,推论统计学,地理,医学成像(比如X射线计算机断层成像和脑电图/事件相关电位),遥感,,无损检测,航空,物理学中。 通常情况下,逆问题是非适定性问题,绝大多数逆问题都是病态的。其在数值上是不稳定的,即在初始资料中的一个微小错误,可以使答案产生很大的错误。这时就需要引入额外的正規化约束条件。 (zh)
  • Ein mathematisches Problem wird ein inverses Problem genannt, wenn man von einer beobachteten oder gewünschten Wirkung eines Systems auf die der Wirkung zugrunde liegende Ursache zurückschließen will. Inverse Probleme sind oft sehr schwierig oder manchmal gar nicht lösbar.Das Gegenteil eines inversen Problems ist ein (teilweise auch genannt), bei dem man ausgehend von der bekannten Ursache die Wirkung des Systems ableiten möchte. (de)
  • An inverse problem in science is the process of calculating from a set of observations the causal factors that produced them: for example, calculating an image in X-ray computed tomography, source reconstruction in acoustics, or calculating the density of the Earth from measurements of its gravity field. It is called an inverse problem because it starts with the effects and then calculates the causes. It is the inverse of a forward problem, which starts with the causes and then calculates the effects. (en)
  • Un problema inverso es aquel en donde los valores de algunos parámetros del modelo deben ser obtenidos de los datos observados. El problema inverso aparece en muchas ramas de la ciencia y de las matemáticas. El problema inverso puede ser formulado como sigue: Datos → Parámetros del modelo (es)
  • En science, un problème inverse est une situation dans laquelle on tente de déterminer les causes d'un phénomène à partir des observations expérimentales de ses effets. Par exemple, en sismologie, la localisation de l'origine d'un tremblement de terre à partir de mesures faites par plusieurs stations sismiques réparties sur la surface du globe terrestre est un problème inverse. (fr)
  • Un problema inverso è un contesto di indagine generico in cui vengono ricercate informazioni su una grandezza fisica, o più in generale su di un sistema, a partire da misurazioni o informazioni di tipo indiretto. (it)
  • Um problema inverso é uma estrutura geral que é usada para converter as medidas observadas em informações sobre um objeto físico ou sistema no qual estamos interessados. Por exemplo, se tem-se medições do campo gravitacional terrestre, então pode-se fazer a pergunta: "dado os dados que temos disponíveis, o que pode-se afirmar sobre a distribuição de densidade da Terra nesta área?" A solução para este problema (i.e. a distribuição de densidade que melhor coincide com os dados) é útil porque ela geralmente nos diz algo sobre um parâmetro físico que não podemos diretamente observar. Então, problemas inversos são um dos mais importantes e bem estudados problemas matemáticos em ciência e matemática. Problemas inversos surgem em muitos campos de ciência e matemática, incluindo: visão computacion (pt)
  • Обратная задача — тип задач, часто возникающий во многих разделах науки, когда значения параметров модели должны быть получены из наблюдаемых данных. Примеры обратных задач можно найти в следующих областях: геофизика, астрономия, медицинская визуализация, компьютерная томография, дистанционное зондирование Земли, спектральный анализ, теория рассеяния и задачи по неразрушающему контролю. (ru)
dcterms:subject
Wikipage page ID
Wikipage revision ID
Link from a Wikipage to another Wikipage
Faceted Search & Find service v1.17_git139 as of Feb 29 2024


Alternative Linked Data Documents: ODE     Content Formats:   [cxml] [csv]     RDF   [text] [turtle] [ld+json] [rdf+json] [rdf+xml]     ODATA   [atom+xml] [odata+json]     Microdata   [microdata+json] [html]    About   
This material is Open Knowledge   W3C Semantic Web Technology [RDF Data] Valid XHTML + RDFa
OpenLink Virtuoso version 08.03.3330 as of Mar 19 2024, on Linux (x86_64-generic-linux-glibc212), Single-Server Edition (378 GB total memory, 49 GB memory in use)
Data on this page belongs to its respective rights holders.
Virtuoso Faceted Browser Copyright © 2009-2024 OpenLink Software