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• W4232679080 abstract "1 Rapid expansion in the collection of large acoustic datasets to answer ecological questions has generated a parallel requirement for techniques that streamline analysis of these datasets. In many cases, automated signal recognition algorithms, often termed 'call recognizers', are the only feasible option for doing this. To date, most research has focused on what types of recognizers perform best, and how to train these recognizers to optimize performance.2 We demonstrate that once recognizer construction is complete and the data processed, further improvements are possible using intrinsic and contextual information associated with each detection. We initially construct a call recognizer for the Night ParrotPezoporus occidentalisusing therpackagemonitoR, and scan a test dataset. We then examine a number of intrinsic variables associated with each detection generated by the recognizer, and several contextual variables associated with the species' environment and ecology, to determine if they might help predict whether a given detection is a true positive (target signal) or false positive (non-target signal). We test several logistic regression models incorporating different combinations of intrinsic and contextual variables, selecting the best-performing model for application. We train the model, using it to calculate the probability each detection is a true or false positive.3 Substituting this model-derived probability for raw recognizer score improved the recognizer's performance, reducing the number of detections requiring proofing by 60% to achieve a recall of 90%, and by 76% to achieve a recall of 75%.4 This technique is applicable to any recognizer output, regardless of the underlying algorithm. Application requires an understanding of how the recognizer algorithm determines matches, and knowledge of a species' ecology and environment. Because advanced programming skills and expertise are not required to apply this technique, it will be particularly relevant to field ecologists for whom building and operating call recognizers is an element of their research toolbox, but not necessarily a focus." @default.
• W4232679080 created "2022-05-12" @default.
• W4232679080 date "2020-07-13" @default.
• W4232679080 modified "2023-09-23" @default.
• W4232679080 title "Decision letter for Using intrinsic and contextual information associated with automated signal detections to improve call recogniser performance: a case study using the cryptic and critically endangered Night Parrot ( <i>Pezoporus occidentalis</i> )" @default.
• W4232679080 doi "https://doi.org/10.1111/2041-210x.13475/v1/decision1" @default.
• W4232679080 hasPublicationYear "2020" @default.
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