@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix org: <http://www.w3.org/ns/org#> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://data.nasa.gov/dataset/5ede2812-dd6d-464a-8b8c-6d06911c79b0> a dcat:Dataset ;
    dct:description "In the literature, impulsive signals are mostly modeled by symmetric alpha-stable processes. To represent their temporal dependencies, usually autoregressive models with time-invariant coefficients are utilized. We propose a general sequential Bayesian modeling methodology where both unknown autoregressive coefficients and distribution parameters can be estimated successfully, even when they are time-varying. In contrast to most work in the literature on signal processing with alpha-stable distributions, our work is general and models also skewed alpha-stable processes. Successful performance of our method is demonstrated by computer simulations. We support our empirical results by providing posterior Cramer–Rao lower bounds. The proposed method is also tested on a practical application where seismic data events are modeled." ;
    dct:identifier "DASHLINK_208" ;
    dct:issued "2010-09-22"^^xsd:date ;
    dct:modified "2020-01-29"^^xsd:date ;
    dct:publisher <https://data.nasa.gov/organization/dbb294e4-8597-44f5-aaf4-c0baac12cdbc> ;
    dct:title "Modeling of non-stationary autoregressive alpha-stable processe" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "Deniz Gencaga" ;
            vcard:hasEmail <mailto:dgencaga@gmail.com> ] ;
    dcat:distribution <https://data.nasa.gov/dataset/5ede2812-dd6d-464a-8b8c-6d06911c79b0/resource/f20456f1-6dd5-4b4c-b654-512da5d4240f> ;
    dcat:keyword "ames",
        "dashlink",
        "nasa" .

<https://data.nasa.gov/dataset/5ede2812-dd6d-464a-8b8c-6d06911c79b0/resource/f20456f1-6dd5-4b4c-b654-512da5d4240f> a dcat:Distribution ;
    dct:description "Modeling of non-stationary autoregressive alpha-stable processes by particle filters" ;
    dct:format "PDF" ;
    dct:identifier "f20456f1-6dd5-4b4c-b654-512da5d4240f" ;
    dct:issued "2025-03-31T16:09:39.548272"^^xsd:dateTime ;
    dct:modified "2025-03-31T16:09:39.536717"^^xsd:dateTime ;
    dct:title "seismic.pdf" ;
    dcat:accessURL <https://c3.nasa.gov/dashlink/static/media/publication/seismic.pdf> ;
    dcat:mediaType "application/pdf" .

<https://data.nasa.gov/organization/dbb294e4-8597-44f5-aaf4-c0baac12cdbc> a org:Organization ;
    skos:prefLabel "NASA" ;
    foaf:name "NASA" .