Aritran Piplai

Dr. Aritran Piplai


Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

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

Representative Publications

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19 November 2020 in IEEE Access
Verified
Journal Article
Open access
APAritran Piplai
Aritran Piplai
Sudip MittalSudip Mittal
Sudip Mittal
AJAnupam Joshi
Anupam Joshi
TFTim Finin
Tim Finin
JHJames Holt
James Holt
RZRichard Zak
Richard Zak
After Action Reports (AARs) provide incisive analysis of cyber-incidents. Extracting cyber-knowledge from these sources would provide security analysts with credible information, which they can use to detect or find patterns indicative of a cyber-attack. In this paper, we describe a system to extract information from AARs, aggregate the extracted information by fusing similar entities together, and represent that extracted information in a Cybersecurity Knowledge Graph (CKG). We extract entities by building a customized named entity recognizer called ‘Malware Entity Extractor’ (MEE). We then build a neural network to predict how pairs of ‘malware entities’ are related to each other. When we have predicted entity pairs and the relationship between them, we assert the ‘entity-relationship set’ in a CKG. Our next step in the process is to fuse similar entities, to improve our CKG. This fusion helps represent intelligence extracted from multiple documents and reports. The fused CKG has knowledge from multiple AARs, with relationships between entities extracted from separate reports. As a result of this fusion, a security analyst can execute queries and retrieve better answers on the fused CKG, than a knowledge graph with no fusion. We also showcase various reasoning capabilities that can be leveraged by a security analyst using our fused CKG.

28 September 2023 in IEEE Internet Computing
Verified
Journal Article
Closed access
APAritran Piplai
Aritran Piplai
AKAnantaa Kotal
Anantaa Kotal
SMSeyedreza Mohseni
Seyedreza Mohseni
MGManas Gaur
Manas Gaur
Sudip MittalSudip Mittal
Sudip Mittal
AJAnupam Joshi
Anupam Joshi
Neurosymbolic artificial intelligence (AI) is an emerging and quickly advancing field that combines the subsymbolic strengths of (deep) neural networks and the explicit, symbolic knowledge contained in knowledge graphs (KGs) to enhance explainability and safety in AI systems. This approach addresses a key criticism of current generation systems, namely, their inability to generate human-understandable explanations for their outcomes and ensure safe behaviors, especially in scenarios with unknown unknowns (e.g., cybersecurity, privacy). The integration of neural networks, which excel at exploring complex data spaces, and symbolic KGs, which represent domain knowledge, allows AI systems to reason, learn, and generalize in a manner understandable to experts. This article describes how applications in cybersecurity and privacy, two of the most demanding domains in terms of the need for AI to be explainable while being highly accurate in complex environments, can benefit from neurosymbolic AI.

20 June 2025
Verified
Book Chapter
Closed access
PDF file
SMShaswata Mitra
Shaswata Mitra
SNSubash Neupane
Subash Neupane
TCTrisha Chakraborty
Trisha Chakraborty
Sudip MittalSudip Mittal
Sudip Mittal
APAritran Piplai
Aritran Piplai
SRShahram Rahimi
Shahram Rahimi

10 October 2024
Verified
Conference Paper
Open access
EMElizabeth Mullins
Elizabeth Mullins
APAdrian Portillo
Adrian Portillo
KRKristalys Ruiz Rohena
Kristalys Ruiz Rohena
APAritran Piplai
Aritran Piplai
Large Language Models have become a valuable source of information for our daily inquiries. However, after training, its data source quickly becomes out-of-date, making RAG a useful tool for providing even more recent or pertinent data. In this work, we investigate how RAG pipelines, with the course materials serving as a data source, might help students in K–12 education. The initial research utilizes Reddit as a data source for up-to-date cybersecurity information. Chunk size is evaluated to determine the optimal amount of context needed to generate accurate answers. After running the experiment for different chunk sizes, answer correctness was evaluated using RAGAs with average answer correctness not exceeding 50 percent for any chunk size. This suggests that Reddit is not a good source to mine for data for questions about cybersecurity threats. The methodology was successful in evaluating the data source, which has implications for its use to evaluate educational resources for effectiveness.

27 February 2024 in Preprints.org
Verified
Preprint
Open access
PDF file
TITosin Ige
Tosin Ige
CKChristopher Kiekintveld
Christopher Kiekintveld
APAritran Piplai
Aritran Piplai
The ever-evolving ways attacker continues to im prove their phishing techniques to bypass existing state-of-the-art phishing detection methods pose a mountain of challenges to researchers in both industry and academia research due to the inability of current approaches to detect complex phishing attack. Thus, current anti-phishing methods remain vulnerable to complex phishing because of the increasingly sophistication tactics adopted by attacker coupled with the rate at which new tactics are being developed to evade detection. In this research, we proposed an adaptable framework that combines Deep learning and Randon Forest to read images, synthesize speech from deep-fake videos, and natural language processing at various predictions layered to significantly increase the performance of machine learning models for phishing attack detection.

5 December 2025 in arXiv
Verified
Preprint
Open access
PDF file
EUEmre Umucu
Emre Umucu
GSGuillermina Solis
Guillermina Solis
LGLeon Garza
Leon Garza
EREmilia Rivas
Emilia Rivas
BLBeatrice Lee
Beatrice Lee
APAritran Piplai
Aritran Piplai
General-purpose large language models (LLMs) have demonstrated remarkable generative and reasoning capabilities but remain limited in healthcare and caregiving applications due to two key deficiencies: factual unreliability and a lack of empathetic communication. These shortcomings pose significant risks in sensitive contexts where users, particularly non-professionals and caregivers, seek medically relevant guidance or emotional reassurance. To address these challenges, we introduce a Direct Preference Optimization (DPO)-based alignment framework designed to improve factual correctness, semantic coherence, and human-centric qualities such as empathy, politeness, and simplicity in caregiver-patient dialogues. Our approach fine-tunes domain-adapted LLMs using pairwise preference data, where preferred responses reflect supportive and accessible communication styles while rejected ones represent prescriptive or overly technical tones. This direct optimization method aligns model outputs with human preferences more efficiently than traditional reinforcement-learning-based alignment. Empirical evaluations across multiple open and proprietary LLMs show that our DPO-tuned models achieve higher semantic alignment, improved factual accuracy, and stronger human-centric evaluation scores compared to baseline and commercial alternatives such as Google medical dialogue systems. These improvements demonstrate that preference-based alignment offers a scalable and transparent pathway toward developing trustworthy, empathetic, and clinically informed AI assistants for caregiver and healthcare communication. Our open-source code is available at: https://github.com/LeonG19/Empathy-by-Design