Shahrzad Sayyafzadeh

dblp:367/1818 · DBLP profile ↗
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4ranked-venue papers
4as first author
4since 2021 · last 2025
0009-0004-6899-5099ORCID · corroborated

Domains — the database's venue-derived domains; a paper can count in several

Artificial intelligence and machine learning · 2 · 2 first-author · 2 since 2021Software engineering, systems software and programming languages · 2 · 2 first-author · 2 since 2021Applied, interdisciplinary, general and emerging computing · 2 · 2 first-author · 2 since 2021Databases, data management, data science and information retrieval · 1 · 1 first-author · 1 since 2021
YearPublicationVenuePosition
2025 SynExpression: A Diffusion-Based Framework for Controllable Facial Expression Synthesis and Emotion Detection Using Facial Segmentation Pose Maps
abstract
Facial expression synthesis and emotion detection are crucial for advancing computer vision applications, including virtual reality and affective computing. This study introduces SynExpression, a novel framework that combines Stable Diffusion and ControlNet to generate diverse, realistic facial expressions guided by pose maps. Central to this framework is SegPoseMap, a cutting-edge segmentation method integrating DeepLabV3 and transformer-based self-attention layers. SegPoseMap enables precise segmentation and alignment of key facial landmarks, providing geometrically accurate masks that significantly improve the fidelity and realism of synthesized expressions. SegPoseMap provides precise delineation of facial landmarks, achieving an average precision (AP) of 96% across multiple intersection-over-union (IoU) thresholds and excelling in segmenting large facial regions with near-perfect precision (98%). Its superior facial feature localization performance significantly enhances synthesized expressions’ fidelity and geometric accuracy. Additionally, SegPoseMap’s segmentation outputs improve emotion detection by enabling precise tracking of subtle facial cues. Experimental results show that SynExpression achieves 99% accuracy and a 99.5% F1 score on a Diffusion-Based dataset. With applications in digital forensics, animation, and emotion analysis, SynExpression offers a robust, versatile, and high-precision solution for controllable facial expression generation and emotion detection.
Shahrzad Sayyafzadeh, Shonda Bernadin, Hongmei Chi
COMPSAC1
2024 Securing Against Deception: Exploring Phishing Emails Through ChatGPT and Sentiment Analysis
abstract
The origin of large language models (LLMs) has left an indelible mark on various domains, most notably in natural language processing and artificial intelligence. While extensive research has delved into LLMs like ChatGPT 4 for tasks such as code generation and text synthesis, their application in identifying malicious web content, particularly phishing web sites, still needs to be explored. To confront the growing wave of automated cyber threats facilitated by LLMs, automating the detection of malicious email content. This paper investigates the utilization of Natural Language Processing (NLP) techniques, including VADER (valence aware dictionary and sentiment Reasoner) sentiment analysis and Large Language Models (LLMs) to strengthen the detection of phishing emails, offering enhanced defense mechanisms against cyber threats by analyzing the diverse attributes of phishing emails, including sender details, URLs, textual content, and linguistic characteristics. In this study, we leverage the power of ChatGPT's 4 state-of-the-art language models and employ Natural Language Processing (NLP) techniques. We develop an intelligent system that identifies and flags potential phishing attempts in spam emails and URLs. Our experiments using GPT-4 on our dataset demonstrated promising results, achieving an accuracy of 92%. These findings underscore LLMs' potential, including VADER sentiment analysis, to detect rapidly and accurately phishing emails, safeguarding cybersecurity challenges and protecting users from online fraud and phishing attempts.
Shahrzad Sayyafzadeh, Mark H. Weatherspoon, Hongmei Chi
SERA1
2023 Enhancing Object Detection in YouTube Thumbnails Forensics with YOLOv4
abstract
YouTube thumbnails play a vital role as visual indicators, succinctly capturing the essence of a video alongside its title and description. Beyond mere previews, these thumbnails have evolved into significant digital artifacts with implications for disk image encryption. This research delves into potentially integrating the advanced YOLOv4 (You Only Look Once) algorithm into creating YouTube thumbnails. YOLOv4 enhances the process by automatically identifying and emphasizing objects of interest in these visual previews. This paper diversifies the dataset to improve the model’s effectiveness, expanding its capacity to recognize and highlight objects more effectively. We address data security challenges by broadening the training data, incorporating authentication, and decrypting the dataset to align it with real-world thumbnail images. The primary objective is to assess the efficacy of YOLOv4 object detection models in authenticated YouTube thumbnail videos. The network underwent training to recognize 80 object classes, achieving a 90% prediction rate and a 92% confidence rate.
Shahrzad Sayyafzadeh, Hongmei Chi, Shuyuan Mary Ho, Idongesit Mkpong-Ruffin
IEEE Big Data1
2023 BERT-Based Sentiment Forensics Analysis for Intrusion Detection
abstract
The need for effective intrusion detection and user behavior analytics in cybersecurity has reached unprecedented levels. By leveraging the power of BERT, a pre-trained language model known for its contextual understanding, the goal is to uncover latent patterns and insights within textual data to identify potential threats and anomalous user behavior. This study aims to further advance network analysis capabilities by integrating BERT (Bidirectional Encoder Representations from Transformers) for fine-tuning an Long Short-Term Memory (LSTM) model with attention mechanisms. By incorporating attention mechanisms, these models intelligently prioritize and focus on relevant parts of the input data, allowing them to capture corpus in our linguistic resource and improve overall performance. The study explores advanced modeling techniques to gain the emotional tone in proactive intrusion detection. We achieved 92% accuracy and precision of 89% on our sentiment-based model into traffic analysis and network passive attacks.
Shahrzad Sayyafzadeh, Hongmei Chi, Kaushik Roy 0002
ICMLA1