2023
Autores
Leandro, JPOC; de Sousa, PSA; Moreira, MDMDA;
Publicação
RETAIL AND MARKETING REVIEW
Abstract
Purpose: The assessment and observation of critical service factors within the retail industry have garnered increased importance in recent times, due to their perceived ability to shape superior future strategies. The aim of this study is to investigate the service elements that are deemed essential by consumers in the retail sector, specifically targeting the grocery retail industry. Design/Methodology/Approach: Our methodological framework incorporates a systematic review of previous literature and a meta-analysis of past studies that highlight the pivotal service elements within the chosen industry. Following the evaluation of existing literature, 55 studies met the inclusion criteria and were selected for further investigation. The systematic review first compiled information from multiple studies, which was then followed by a meta-analysis. This enabled us to statistically analyze the empirical data from the chosen studies, thereby drawing significant conclusions. Findings: The analyses pinpoint that elements such as personal interaction attributes, product quality and availability, and reliable service are of utmost importance to consumers. Interestingly, customer satisfaction was the only outcome that was positively influenced by all the examined service attributes. Additionally, our findings underscore that certain moderators, such as geographic region and timing of the study, sway the relationship between service attributes and customer outcomes. Originality: Despite numerous meta-analyses attempting to pinpoint the key service attributes for consumers, to the best of our understanding, this study is the first to focus on the retail industry, specifically on hypermarkets, supermarkets, or grocery stores. Therefore, this research bridges a gap in the literature and offers a significant contribution to the academic community by proposing an agenda for future research on customer service factors. It also provides invaluable insight for retail managers, outlining numerous practical implications and offering guidance.
2023
Autores
Mansouri, B; Durgin, S; Franklin, S; Fletcher, S; Campos, R;
Publicação
CLEF (Working Notes)
Abstract
This paper describes the participation of the Artificial Intelligence and Information Retrieval (AIIR) Lab from the University of Southern Maine and the Laboratory of Artificial Intelligence and Decision Support (LIAAD) lab from INESC TEC in the CLEF 2023 SimpleText lab. There are three tasks defined for SimpleText: (T1) What is in (or out)?, (T2) What is unclear?, and (T3) Rewrite this!. Five runs were submitted for Task 1 using traditional Information Retrieval, and Sentence-BERT models. For Task 2, three runs were submitted, using YAKE! and KBIR keyword extraction models. Finally, for Task 3, two models were deployed, one using OpenAI Davinci embeddings and the other combining two unsupervised simplification models.
2023
Autores
Cunha, C; Silva, S; Frazão, O; Novais, S;
Publicação
EPJ Web of Conferences
Abstract
2023
Autores
Oliveira, HS; Ribeiro, PP; Oliveira, HP;
Publicação
IbPRIA
Abstract
In recent years the great success of transformers-based models initially employed in Natural Language (NLP) tasks has led to the development of several transformers variations to be employed in a wide range of domains, such as vision. With the correct amount of training data and proper training, transformers can perform excellently compared to the Convolution Neural Networks (CNN) counterpart in the vision tasks. However, the main drawback of transformers concerns the know memory requirements that often exceed the available training platform, growing in a quadratic form regarding the input image size, and a great tendency to overfit. Several works address the memory problem by relaxing the model architecture versions, but mainly with reduced prediction capabilities. In this work, we evaluate Random Patch erasing among the image patch level of the transformer model as a regularization technique to reduce overfitting while at the same time alleviating training time. The evaluated regularization technique achieves competitive results on several image classification medical datasets. The evaluated Visual Transformers (ViT) models allow to be trained in a single GPU, reaching similar results to CNN counterparts, obtaining an accuracy 91.2%, 79.2% in two competitive image datasets, and reducing the training time on average by 22% on the transformers models.
2023
Autores
Abreu, M; Rodrigues, HS; Silva, Â; Garcia, JE;
Publicação
Engineering Management in Production and Services
Abstract
2023
Autores
Rezende, RF; Coelho, A; Fernandes, R; Camara, J; Neto, A; Cunha, A;
Publicação
Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST
Abstract
Glaucoma is a disease that arises from increased intraocular pressure and leads to irreversible partial or total loss of vision. Due to the lack of symptoms, this disease often progresses to more advanced stages, not being detected in the early phase. The screening of glaucoma can be made through visualization of the retina, through retinal images captured by medical equipment or mobile devices with an attached lens to the camera. Deep learning can enhance and increase mass glaucoma screening. In this study, domain transfer learning technique is important to better weight initialization and for understanding features more related to the problem. For this, classic convolutional neural networks, such as ResNet50 will be compared with Vision Transformers, in high and low-resolution images. The high-resolution retinal image will be used to pre-trained the network and use that knowledge for detecting glaucoma in retinal images captured by mobile devices. The ResNet50 model reached the highest values of AUC in the high-resolution dataset, being the more consistent model in all the experiments. However, the Vision Transformer proved to be a promising technique, especially in low-resolution retinal images. © 2023, ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering.
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