منابع مشابه
Phase-Based Information Retrieval
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Phase retrieval problem has been studied in various applications. It is an inverse problem without the standard uniqueness guarantee. To make complete theoretical analyses and devise efficient algorithms to recover the signal is sophisticated. In this paper, we come up with a model called phase retrieval with background information which recovers the signal with the known background information...
متن کاملGeneralized Phase Retrieval Algorithm based on Information Measures
An iterative phase retrieval algorithm based on the maximum entropy method (MEM) is presented. Introducing a new generalized information measure, we derive a novel class of algorithms which includes the conventionally used error reduction algorithm and a MEM-type iterative algorithm which is presented for the first time. These different phase retrieval methods are unified on the basis of the fr...
متن کاملPublic Transport Ontology for Passenger Information Retrieval
Passenger information aims at improving the user-friendliness of public transport systems while influencing passenger route choices to satisfy transit user’s travel requirements. The integration of transit information from multiple agencies is a major challenge in implementation of multi-modal passenger information systems. The problem of information sharing is further compounded by the multi-l...
متن کاملConcept Based Information Retrieval
Accounting for textual variation in the documents and queries processed by information retrieval systems is considered essential for achieving good retrieval. Recent research has called into question several ofthe techniques used to support this endeavor This paper reports on experiments with a concept based information retrieval system which relies on a program called MetaMap to accountfor tex...
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ژورنال
عنوان ژورنال: Information Processing & Management
سال: 1998
ISSN: 0306-4573
DOI: 10.1016/s0306-4573(98)00030-2