Evidence map›Paper›PMID 37946378›Full record

ArticlePublic health nutrition2023

Revolutionising food advertising monitoring: a machine learning-based method for automated classification of food videos.

Michele Bittencourt Rodrigues, Victória Pedrazzoli Ferreira, Rafael Moreira Claro, Ana Paula Bortoletto Martins, Sandra Avila, Paula Martins Horta

Abstract read
In one paragraph

Article in Public health nutrition, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed.

  1. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Michele Bittencourt RodriguesNutrition Department, Federal University of Minas Gerais. Av. Alfredo Balena 190, 30130-100. Escola de Enfermagem, 3º andar, sala 312, Belo Horizonte, Minas Gerais, Brazil.ORCID 0000-0001-7869-9665
Victória Pedrazzoli FerreiraInstitute of Computing, University of Campinas, Campinas, SP, Brazil.
Rafael Moreira ClaroNutrition Department, Federal University of Minas Gerais. Av. Alfredo Balena 190, 30130-100. Escola de Enfermagem, 3º andar, sala 312, Belo Horizonte, Minas Gerais, Brazil.
Ana Paula Bortoletto MartinsDepartment of Nutrition, School of Public Health, University of São Paulo, Av. Dr. Arnaldo, 715 - Cerqueira César, São Paulo, SP, 01246-904, Brazil.ORCID 0000-0003-3560-4472
Sandra AvilaInstitute of Computing, University of Campinas, Campinas, SP, Brazil.
Paula Martins HortaNutrition Department, Federal University of Minas Gerais. Av. Alfredo Balena 190, 30130-100. Escola de Enfermagem, 3º andar, sala 312, Belo Horizonte, Minas Gerais, Brazil.ORCID 0000-0002-1848-6470

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveFood advertising is an important determinant of unhealthy eating. However, analysing a large number of advertisements (ads) to distinguish between food and non-food content is a challenging task. This study aims to develop a machine learning-based method to automatically identify and classify food and non-food ad videos.

designMethodological study to develop an algorithm model that prioritises both accuracy and efficiency in monitoring and classifying advertising videos.

settingFrom a collection of Brazilian television (TV) ads data, we created a database and split it into three sub-databases (i.e. training, validation and test) by extracting frames from ads. Subsequently, the training database was classified using the EfficientNet neural network. The best models and data-balancing strategies were investigated using the validation database. Finally, the test database was used to apply the best model and strategy, and results were verified with field experts.

participantsThe study used 2124 recorded Brazilian TV programming hours from 2018 to 2020. It included 703 food ads and over 20 000 non-food ads, following the protocol developed by the INFORMAS network for monitoring food marketing on TV.

resultsThe results showed that the EfficientNet neural network associated with the balanced batches strategy achieved an overall accuracy of 90·5 % on the test database, which represents a reduction of 99·9 % of the time spent on identifying and classifying ads.

conclusionsThe method studied represents a promising approach for differentiating food and non-food-related video within monitoring food marketing, which has significant practical implications for researchers, public health policymakers, and regulatory bodies.

Indexed as

AdvertisingFoodBeveragesFood IndustryHumansMachine LearningMarketingTelevisionArtificial intelligenceFood advertisingMachine learningMonitoringUltra-processed foods

Identifiers

PMID37946378
PMCPMC10755396

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.