Personal profile
Research Interests
Across the publications, the researcher advances natural language processing, AI-driven education, and knowledge management to address real-world challenges in security analytics, information extraction, content dissemination, and academic ecosystems. The work combines text processing (stop-word removal, lemmatization, stemming, n-grams) with practical web tools, and leverages spaCy-based NER for geo-located situational awareness from social media data to visualize violence patterns and support timely decision-making. It also develops intelligent educational agents that use LangChain and GPT-3.5 Turbo to provide personalized learning support, generate assessments, and adapt content within university settings, highlighting architecture that involves students, teachers, and tutors. Additionally, the research outlines a comprehensive knowledge management framework for a university ecosystem, integrating AI-assisted knowledge digestion (CREAMINKA, PURE) and a knowledge repository to foster collaboration, innovation, and recognition. Overall, the contributions demonstrate methodological rigor in NLP pipelines, practical deployment of AI for education and security analytics, and a strategic emphasis on knowledge ecosystems to accelerate research and enterprise collaboration.
Key Topics:
- Natural Language Processing, Conversational AI & Text Analytics
- Artificial Intelligence, Machine Learning & Data Science
- Education, Pedagogy, Teacher Training & Inclusion
- Geospatial Analysis, Remote Sensing & GIS
- Optimization, Operations Research & Decision Support
- Knowledge Management, Research Ecosystems & Academic Practice
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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SDG 3 Good Health and Well-being
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SDG 10 Reduced Inequalities
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SDG 16 Peace, Justice and Strong Institutions
Collaborations and top research areas from the last five years
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Identifying Topics in Tweets Related to Citizen Security
Jimenez, J., Reátegui, R., Chicaiza, J., Roa, H. N. & Pulla-Sánchez, D., 2026, Emerging Trends in Information Systems and Technologies - WorldCIST 2025. Volume 1. Rocha, A., Adeli, H., Poniszewska-Maranda, A., Moreira, F. & Bianchi, I. (eds.). Springer Science and Business Media Deutschland GmbH, p. 569-578 10 p. (Lecture Notes in Networks and Systems; vol. 1514 LNNS).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review
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Identifying Topics in Tweets Related to Citizen Security
Reategui Rojas, R. M., Chicaiza Espinosa, J., Roa Marín, H. N. & Pulla Sanchez, D. J., 16 Jan 2026.Research output: Contribution to conference › Paper
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OntoDup: Governance-Aware Entity Matching for Scholarly Knowledge Graph Deduplication
Galán Mena, J., López Nores, M., Pulla Sánchez, D., Guerrero-Vásquez, L. F. & Salgado Guerrero, J. P., Apr 2026, In: Information (Switzerland). 17, 4, 325.Research output: Contribution to journal › Article › peer-review
Open Access -
Topic Analysis in News About AI: An Approach Based on LDA and Large Language Models
Galán-Mena, J., López-Nores, M., Galán, J., Pulla-Sánchez, D., Guerrero-Vásquez, L. F. & Salgado-Guerrero, J. P., 2026, Emerging Trends in Information Systems and Technologies - WorldCIST 2025 Volume 2. Rocha, A., Adeli, H., Poniszewska-Maranda, A., Moreira, F. & Bianchi, I. (eds.). Springer Science and Business Media Deutschland GmbH, p. 355-366 12 p. (Lecture Notes in Networks and Systems; vol. 1582 LNNS).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review
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Exploring Political Discourse in Ecuador's 2025 Election: Social Media Topic Modeling with BERTopic
Pazmiño Villamarín, A. M., López Paredes, M., Cruz Silva, J., Galán Mena, J., Pulla Sánchez, D. & López Nores, M., 2025, ETCM 2025 - 9th Ecuador Technical Chapters Meeting. Institute of Electrical and Electronics Engineers Inc., (ETCM 2025 - 9th Ecuador Technical Chapters Meeting).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review