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Spreading activation is a method for searching associative networks, biological and artificial neural networks, or semantic networks. The search process is initiated by labeling a set of source nodes (e.g. concepts in a semantic network) with weights or "activation" and then iteratively propagating or "spreading" that activation out to other nodes linked to the source nodes. Most often these "weights" are real values that decay as activation propagates through the network. When the weights are discrete this process is often referred to as marker passing. Activation may originate from alternate paths, identified by distinct markers, and terminate when two alternate paths reach the same node. However brain studies show that several different brain areas play an important role in semantic pro

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  • انتشار التفعيل (ar)
  • Aktivierungsausbreitung (de)
  • Diffusione dell'attivazione (it)
  • Spreading activation (en)
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  • انتشار التفعيل في علم الأعصاب هي الفرضية القائلة بأن تفعيل خلية عصبية يفعل الخلايا الأخرى المرتبطة بها. وهو في علم النفس تصور لترابط الصور الذهنية المحفوظة يقول بأن استحضار صورة محفوظة واحدة يستحضر الصور الأخرى المرتبطة بها. والتفعيل عبارة عن جعل الشيء يفعل. (ar)
  • La diffusione dell'attivazione è un metodo di ricerca per reti associative, neurali e semantiche. L'algoritmo inizia etichettando un insieme di nodi sorgente con dei pesi (detti anche attivazioni) e propagando queste attivazioni ai nodi collegati. Solitamente questi pesi sono numeri reali che diminuiscono progressivamente (decadono) ogni volta che un nuovo arco viene percorso. La diffusione dell'attivazione può essere applicata anche nell'ambito dell'information retrieval, usando una rete di nodi per rappresentare dei documenti e i termini in essi contenuti. (it)
  • Das Modell von Collins und Loftus zur Aktivierungsausbreitung (Spreading Activation Network) findet in der Sprachpsychologie und beim Priming seine Anwendung und dient zur Veranschaulichung der Prozesse, die bei der Auswahl eines Wortes im Gehirn ablaufen. Dem Modell zugrunde liegt ein Mentales Lexikon, welches als neuronales Netzwerk aufgebaut ist. Demnach breitet sich die Aktivierung eines Wortes über die jeweils mitabgespeicherten Zusammenhänge mit anderen Worten aus. (de)
  • Spreading activation is a method for searching associative networks, biological and artificial neural networks, or semantic networks. The search process is initiated by labeling a set of source nodes (e.g. concepts in a semantic network) with weights or "activation" and then iteratively propagating or "spreading" that activation out to other nodes linked to the source nodes. Most often these "weights" are real values that decay as activation propagates through the network. When the weights are discrete this process is often referred to as marker passing. Activation may originate from alternate paths, identified by distinct markers, and terminate when two alternate paths reach the same node. However brain studies show that several different brain areas play an important role in semantic pro (en)
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  • انتشار التفعيل في علم الأعصاب هي الفرضية القائلة بأن تفعيل خلية عصبية يفعل الخلايا الأخرى المرتبطة بها. وهو في علم النفس تصور لترابط الصور الذهنية المحفوظة يقول بأن استحضار صورة محفوظة واحدة يستحضر الصور الأخرى المرتبطة بها. والتفعيل عبارة عن جعل الشيء يفعل. (ar)
  • Das Modell von Collins und Loftus zur Aktivierungsausbreitung (Spreading Activation Network) findet in der Sprachpsychologie und beim Priming seine Anwendung und dient zur Veranschaulichung der Prozesse, die bei der Auswahl eines Wortes im Gehirn ablaufen. Dem Modell zugrunde liegt ein Mentales Lexikon, welches als neuronales Netzwerk aufgebaut ist. Demnach breitet sich die Aktivierung eines Wortes über die jeweils mitabgespeicherten Zusammenhänge mit anderen Worten aus. Die einzelnen Knoten (rot, Hitze, Feuer usw.) des Netzwerkes bilden die Begriffe. Die (assoziativen) Zusammenhänge der einzelnen Begriffe werden durch Kanten (Linien) dargestellt. Nach Aktivierung eines Begriffes breitet sich die Auswahl weiterer Begriffe (Knoten) über die jeweils verfügbaren Assoziationen (Kanten) aus. Die Ausbreitung erfolgt dabei gleichzeitig in alle verfügbaren Richtungen. Beim semantischen Priming ist zudem zu beobachten, dass bereits aktivierte Begriffe ab dem zweiten Zugriff schneller gefunden werden. Es handelt sich also um eine Art von mentalem Cache. (de)
  • Spreading activation is a method for searching associative networks, biological and artificial neural networks, or semantic networks. The search process is initiated by labeling a set of source nodes (e.g. concepts in a semantic network) with weights or "activation" and then iteratively propagating or "spreading" that activation out to other nodes linked to the source nodes. Most often these "weights" are real values that decay as activation propagates through the network. When the weights are discrete this process is often referred to as marker passing. Activation may originate from alternate paths, identified by distinct markers, and terminate when two alternate paths reach the same node. However brain studies show that several different brain areas play an important role in semantic processing. Spreading activation in semantic networks as a model were invented in cognitive psychology to model the fan out effect. Spreading activation can also be applied in information retrieval, by means of a network of nodes representing documents and terms contained in those documents. (en)
  • La diffusione dell'attivazione è un metodo di ricerca per reti associative, neurali e semantiche. L'algoritmo inizia etichettando un insieme di nodi sorgente con dei pesi (detti anche attivazioni) e propagando queste attivazioni ai nodi collegati. Solitamente questi pesi sono numeri reali che diminuiscono progressivamente (decadono) ogni volta che un nuovo arco viene percorso. La diffusione dell'attivazione può essere applicata anche nell'ambito dell'information retrieval, usando una rete di nodi per rappresentare dei documenti e i termini in essi contenuti. (it)
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