Edgar León-Sandoval

Mr. Edgar León-Sandoval

Tecnológico de Monterrey, Monterrey, Nuevo León, Mexico
orcid

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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18 May 2022 in Computational Intelligence and Neuroscience
Verified
Journal Article
Open access
PDF file
ELEdgar León-Sandoval
Edgar León-Sandoval
Mahdi ZareeiMahdi Zareei
Mahdi Zareei
Liliana Ibeth Barbosa-SantillánLiliana Ibeth Barbosa-Santillán
Liliana Ibeth Barbosa-Santillán
LFLuis Falcon-Morales
Luis Falcon-Morales
ALAntonio Pareja Lora
Antonio Pareja Lora
GRGilberto Ruiz
Gilberto Ruiz
The world is facing the COVID-19 pandemic, leading to an unprecedented change in the lifestyle routines of millions. Beyond the general physical health, financial, and social repercussions of the pandemic, the adopted mitigation measures also present significant challenges in the populations mental health and health programs. It is complex for public organizations to measure the populations mental health in order to incorporate it into their own decision-making process. Traditional survey methods are time-consuming, expensive, and fail to provide the continuous information needed to respond to the rapidly evolving effects of governmental policies on the populations mental health. A significant portion of the population has turned to social media to express the details of their daily life, rendering this public data a rich field for understanding emotional and mental well-being. This study aims to track and measure the sentiment changes of the Mexican population in response to the COVID-19 pandemic. To this end, we analyzed 760,064,879 public domain tweets collected from a public access repository to examine the collective shifts in the general mood about the pandemic evolution, news cycles, and governmental policies using open sentiment analysis tools. Sentiment analysis polarity scores, which oscillate around -0.15, show a weekly seasonality according to Twitters usage and a consistently negative outlook from the population. It also remarks on the increased controversy after the governmental decision to terminate the lockdown and the celebrated holidays, which encouraged the people to incur social gatherings. These findings expose the adverse emotional effects of the ongoing pandemic while showing an increase in social media usage rates of 2.38 times, which users employ as a coping mechanism to mitigate the feelings of isolation related to long-term social distancing. The findings have important implications in the mental health infrastructure for ongoing mitigation efforts and feedback on the perception of policies and other measures. The overall trend of the sentiment polarity is 0.0001110643.

10 August 2022 in Electronics
Verified
Journal Article
Open access
PDF file
ELEdgar León-Sandoval
Edgar León-Sandoval
Mahdi ZareeiMahdi Zareei
Mahdi Zareei
Liliana Ibeth Barbosa-SantillánLiliana Ibeth Barbosa-Santillán
Liliana Ibeth Barbosa-Santillán
LFLuis Falcon-Morales
Luis Falcon-Morales
The world has been facing the COVID-19 pandemic, which has come with an unprecedented impact on general physical health and financial and social repercussions. The adopted mitigation measures also present significant challenges to the population’s mental health and health-related programs. It is complex for public organizations to measure the population’s mental health to incorporate its feedback into their decision-making process. A significant portion of the population has turned to social media to express the details of their daily life, making these public data a rich field for understanding emotional and mental well-being. To this end, by using open sentiment analysis tools, we analyzed 760,064,879 public domain tweets collected from a public access repository to examine the collective shifts in the general mood about the pandemic evolution, news cycles, and governmental policies. Several modern language models were evaluated and compared using intrinsic and extrinsic tasks, that is, the sentiment analysis evaluation of public domain tweets related to the COVID-19 pandemic in Mexico. This study provides a fair evaluation of state-of-the-art language models, such as BERT and VADER, showcasing their metrics and comparing their performance against a real-world task. Results show the importance of selecting the correct language model for large projects such as this one, for there is a need to balance costs with the model’s performance.

30 November 2025 in Applied Sciences
Verified
Journal Article
Open access
PDF file
Liliana Ibeth Barbosa-SantillánLiliana Ibeth Barbosa-Santillán
Liliana Ibeth Barbosa-Santillán
ELEdgar León-Sandoval
Edgar León-Sandoval
In today’s rapidly evolving digital landscape, businesses are constantly under pressure to produce high-quality, engaging content for various marketing channels, including blog posts, social media updates, and email campaigns. However, the traditional manual content generation process is often time-consuming, resource-intensive, and inconsistent in maintaining the desired messaging and tone. As a result, the content production process can become a bottleneck, delay marketing campaigns, and reduce organizational agility. Furthermore, manual content generation introduces the risk of inconsistencies in tone, style, and messaging across different platforms and pieces of content. These inconsistencies can confuse the audience and dilute the message. We propose a hybrid approach for content generation based on the integration of Markov Chains with Semantic Technology (CGMCST). Based on the probabilistic nature of Markov chains, this approach allows an automated system to predict sequences of words and phrases, thereby generating coherent and contextually accurate content. Moreover, the application of semantic technology ensures that the generated content is semantically rich and maintains a consistent tone and style. Consistency across all marketing materials strengthens the message and enhances audience engagement. Automated content generation can scale effortlessly to meet increasing demands. The algorithm obtained an entropy of 9.6896 for the stationary distribution, indicating that the model can accurately predict the next word in sequences and generate coherent, contextually appropriate content that supports the efficacy of this novel CGMCST approach. The simulation was executed for a fixed time of 10,000 cycles, considering the weights based on the top three topics. These weights are determined both by the global document index and by term. The stationary distribution of the Markov chain for the top keywords, by stationary probability, includes a stationary distribution of “people” with a 0.004398 stationary distribution.

21 December 2022
Verified
Book Chapter
Open access
PDF file
ELEdgar León-Sandoval
Edgar León-Sandoval
Mahdi ZareeiMahdi Zareei
Mahdi Zareei
Liliana Ibeth Barbosa-SantillánLiliana Ibeth Barbosa-Santillán
Liliana Ibeth Barbosa-Santillán
LFLuis Falcon-Morales
Luis Falcon-Morales
The emergence of the COVID-19 pandemic has led to an unprecedented change in the lifestyle routines of millions of people. Beyond the multiple repercussions of the pandemic, we are also facing significant challenges in the population’s mental health and health programs. Typical techniques to measure the population’s mental health are semiautomatic. Social media allow us to know habits and daily life, making this data a rich silo for understanding emotional and mental well-being. This study aims to build a resilient and flexible system that allows us to track and measure the sentiment changes of a given population, in our case, the Mexican people, in response to the COVID-19 pandemic. We built an extensive data system utilizing modern cloud-based serverless architectures to analyze 760,064,879 public domain tweets collected from a public access repository to examine the collective shifts in the general mood about the pandemic evolution, news cycles, and governmental policies using open sentiment analysis tools. We provide metrics, advantages, and challenges of developing serverless cloud-based architectures for a natural language processing project of a large magnitude.

23 April 2024
Verified
Preprint
Open access
PDF file
ELEdgar León-Sandoval
Edgar León-Sandoval
I read this paper with interest and high expectations, for the idea is interesting and worth the publication and time invested in it. However, this paper lacks rigor in pretty much every area; only the problem statement is engaging, for the rest is a...

3 April 2024
Verified
Preprint
Open access
PDF file
ELEdgar León-Sandoval
Edgar León-Sandoval
It's a well-articulated article, with relevant references, properly written to transmit its message in a clear and concise manner.