Matches in SemOpenAlex for { <https://semopenalex.org/work/W2139738785> ?p ?o ?g. }
Showing items 1 to 91 of
91
with 100 items per page.
- W2139738785 abstract "We present a framework for designing fast and monotonic algorithms for transmission tomography penalized likelihood image reconstruction. The new algorithms are based on paraboloidal surrogate functions for the log-likelihood. Due to the form of the log-likelihood function, it is possible to find low curvature surrogate functions that guarantee monotonicity. Unlike previous methods, the proposed surrogate functions lead to monotonic algorithms even for the nonconvex log-likelihood that arises due to background events such as scatter and random coincidences. The gradient and the curvature of the likelihood terms are evaluated only once per iteration. Since the problem is simplified, the CPU time per iteration is less than that of current algorithms which directly minimize the objective, yet the convergence rate is comparable. The simplicity, monotonicity and speed of the new algorithms are quite attractive. The convergence rates of the algorithms are demonstrated using real PET transmission scans." @default.
- W2139738785 created "2016-06-24" @default.
- W2139738785 creator A5027207271 @default.
- W2139738785 creator A5065994318 @default.
- W2139738785 date "2002-11-27" @default.
- W2139738785 modified "2023-09-23" @default.
- W2139738785 title "Accelerated monotonic algorithms for transmission tomography" @default.
- W2139738785 cites W1647554959 @default.
- W2139738785 cites W1970820012 @default.
- W2139738785 cites W1981797739 @default.
- W2139738785 cites W1984314510 @default.
- W2139738785 cites W2035355801 @default.
- W2139738785 cites W2102849784 @default.
- W2139738785 cites W2110733023 @default.
- W2139738785 cites W2117893569 @default.
- W2139738785 cites W2157099732 @default.
- W2139738785 cites W2161623414 @default.
- W2139738785 cites W2165399609 @default.
- W2139738785 doi "https://doi.org/10.1109/icip.1998.723620" @default.
- W2139738785 hasPublicationYear "2002" @default.
- W2139738785 type Work @default.
- W2139738785 sameAs 2139738785 @default.
- W2139738785 citedByCount "19" @default.
- W2139738785 countsByYear W21397387852012 @default.
- W2139738785 countsByYear W21397387852017 @default.
- W2139738785 crossrefType "proceedings-article" @default.
- W2139738785 hasAuthorship W2139738785A5027207271 @default.
- W2139738785 hasAuthorship W2139738785A5065994318 @default.
- W2139738785 hasBestOaLocation W21397387852 @default.
- W2139738785 hasConcept C11413529 @default.
- W2139738785 hasConcept C126255220 @default.
- W2139738785 hasConcept C134306372 @default.
- W2139738785 hasConcept C162324750 @default.
- W2139738785 hasConcept C195065555 @default.
- W2139738785 hasConcept C2524010 @default.
- W2139738785 hasConcept C26517878 @default.
- W2139738785 hasConcept C2777303404 @default.
- W2139738785 hasConcept C28826006 @default.
- W2139738785 hasConcept C33923547 @default.
- W2139738785 hasConcept C38652104 @default.
- W2139738785 hasConcept C41008148 @default.
- W2139738785 hasConcept C50522688 @default.
- W2139738785 hasConcept C57869625 @default.
- W2139738785 hasConcept C72169020 @default.
- W2139738785 hasConcept C761482 @default.
- W2139738785 hasConcept C76155785 @default.
- W2139738785 hasConceptScore W2139738785C11413529 @default.
- W2139738785 hasConceptScore W2139738785C126255220 @default.
- W2139738785 hasConceptScore W2139738785C134306372 @default.
- W2139738785 hasConceptScore W2139738785C162324750 @default.
- W2139738785 hasConceptScore W2139738785C195065555 @default.
- W2139738785 hasConceptScore W2139738785C2524010 @default.
- W2139738785 hasConceptScore W2139738785C26517878 @default.
- W2139738785 hasConceptScore W2139738785C2777303404 @default.
- W2139738785 hasConceptScore W2139738785C28826006 @default.
- W2139738785 hasConceptScore W2139738785C33923547 @default.
- W2139738785 hasConceptScore W2139738785C38652104 @default.
- W2139738785 hasConceptScore W2139738785C41008148 @default.
- W2139738785 hasConceptScore W2139738785C50522688 @default.
- W2139738785 hasConceptScore W2139738785C57869625 @default.
- W2139738785 hasConceptScore W2139738785C72169020 @default.
- W2139738785 hasConceptScore W2139738785C761482 @default.
- W2139738785 hasConceptScore W2139738785C76155785 @default.
- W2139738785 hasLocation W21397387851 @default.
- W2139738785 hasLocation W21397387852 @default.
- W2139738785 hasOpenAccess W2139738785 @default.
- W2139738785 hasPrimaryLocation W21397387851 @default.
- W2139738785 hasRelatedWork W1647554959 @default.
- W2139738785 hasRelatedWork W1981797739 @default.
- W2139738785 hasRelatedWork W1984634678 @default.
- W2139738785 hasRelatedWork W1994808901 @default.
- W2139738785 hasRelatedWork W2032237670 @default.
- W2139738785 hasRelatedWork W2037521346 @default.
- W2139738785 hasRelatedWork W2049633694 @default.
- W2139738785 hasRelatedWork W2050885986 @default.
- W2139738785 hasRelatedWork W2069629287 @default.
- W2139738785 hasRelatedWork W2099915247 @default.
- W2139738785 hasRelatedWork W2101455165 @default.
- W2139738785 hasRelatedWork W2104455572 @default.
- W2139738785 hasRelatedWork W2117893569 @default.
- W2139738785 hasRelatedWork W2130217200 @default.
- W2139738785 hasRelatedWork W2142419873 @default.
- W2139738785 hasRelatedWork W2151517435 @default.
- W2139738785 hasRelatedWork W2154744699 @default.
- W2139738785 hasRelatedWork W2156612134 @default.
- W2139738785 hasRelatedWork W2160260190 @default.
- W2139738785 hasRelatedWork W2165399609 @default.
- W2139738785 isParatext "false" @default.
- W2139738785 isRetracted "false" @default.
- W2139738785 magId "2139738785" @default.
- W2139738785 workType "article" @default.