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• W4380479895 abstract "Abstract Finding an object amongst a cluttered visual scene is an everyday task for humans but presents a fundamental challenge to computational models performing this feat. Previous attempts to model efficient visual search have focused on locating targets as swiftly as possible, but so far have not considered balancing the costs of lengthy searches against the costs of making errors. Here, we propose a neuro-inspired model of visual search that offers an attention-based control mechanism for this speed-accuracy trade-off. The model combines a goal-based fixation policy, which captures human-like behaviour on a simple visual search task, with a deep neural network that carries out the target detection step. The neural network is patched with a target-based feature attention model previously applied to standalone classification tasks. In contrast to image classification, visual search introduces a time component, which places an additional demand on the model to minimise the time cost of the search whilst also maintaining acceptable accuracy. The proposed model balances these two costs by modulating the attentional strength given to characteristic features of the target class, thereby minimising an associated cost function. The model offers a method for optimising the costs of visual search and demonstrates the value of a decision theoretic approach to modelling more complex visual tasks involving attention." @default.
• W4380479895 created "2023-06-14" @default.
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• W4380479895 date "2023-06-13" @default.
• W4380479895 modified "2023-09-26" @default.
• W4380479895 title "Feature Attention as a Control Mechanism for the Balance of Speed and Accuracy in Visual Search" @default.
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• W4380479895 doi "https://doi.org/10.1007/s42113-023-00171-8" @default.
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