CS Colloquium

Kai Lukoff
Santa Clara University

Stevenson 1300
Monday, February 24, 2025

The Santa Clara University campus is adorned with symbols and monuments, including a Spanish Mission Church, that highlight its Catholic heritage. However, the presence and history of the Ohlone Native Americans, who have inhabited this land for thousands of years and continue to live in the region, receive little to no recognition. How can we utilize augmented reality (AR) to share these hidden stories?

In collaboration with the Muwekma Ohlone Tribe, our interdisciplinary team developed the Thámien Ohlone AR tour. This tour reveals hidden stories, encourages visitors to engage in critical reflection, and inspires visions of a more just future and received the Best Movie Award at CHI 2024, the leading conference in the field of human-computer interaction. This talk will share insights on co-designing location-based AR experiences for social impact and explore the potential of AR in preserving cultural heritage.

BIO
Kai Lukoff is an assistant professor in the Department of Computer Science & Engineering at Santa Clara University. He leads the Human-Computer Interaction Lab, focusing on technologies with social impact. His recent work focuses on co-design methods for location-based augmented reality. His research has been featured in prominent conferences such as CHI, CSCW, IMWUT, and DIS, and he was honored with the 2023 Outstanding Dissertation Award from ACM SIGCHI.

Joshua Gross
CSU Monterey Bay

Stevenson 1300
Monday, March 3, 2025

Many computer science students struggle to learn computational complexity. Some find the topic too "math-y", and others struggle to perform systematic analysis. But what if the real challenge is to get students to care about computational complexity? Modern computers are so fast that the impact of complexity isn't immediately apparent, but what if we connected complexity to something that most students already care about: global climate change?

That's what Draculog does: it helps students understand complexity and analysis in terms of energy usage and CO2 produced, not just time.

This talk will cover the architecture and implementation of Draculog and plans to validate its effectiveness in motivating students to better understand complexity. In addition, the talk will discuss several student research projects using Draculog to better understand complexity and climate impact.

Mehdi Bahrami
Principal Researcher, Fujitsu Research

Stevenson 1300
Monday, March 10, 2025

The rapid proliferation of large language models (LLMs) has brought with it both opportunities and challenges. While LLMs and more broadly generative AI technologies are capable of providing excellent improvements for various routine and autonomous tasks thereby enabling cost and performance benefit, they are also prone to personal and societal harms such as biases, stereotypes, misinformation, and hallucinations to name a few. These ethical concerns have in turn triggered stakeholders across the world to call in for regulatory measures that ensure safe and beneficial use of generative AI technologies. In parallel, there are also research efforts to alleviate these issues through the development of generative AI bias detection and mitigating strategies. Towards advancing this goal, in this talk, we will explore the nature of bias in LLMs, highlight existing detection methods, and examine emerging techniques to mitigate bias in large-scale language models. Through a combination of theoretical insights and practical examples, we aim to advance the conversation around ethical AI deployment. It aims to offer strategies that can be adopted by developers, researchers, and policymakers to promote bias awareness, fairness and accountability in AI applications.

Carter Tillquist
CSU Chico

Stevenson 1300
Monday, March 24, 2025

The metric dimension of a graph G=(V,E) is the smallest number of nodes required to uniquely identify all nodes in G based on shortest path distances. This concept is closely related to trilateration, the idea underlying the Global Positioning System (GPS), and has applications in navigation and in generating embeddings for symbolic data analysis. In this talk, we discuss previous work and preliminary results related to the behavior of metric dimension in the context of Hamming graphs and several random graph models. Bounds on metric dimension and efficient heuristic algorithms for identifying close to optimal solutions are covered.

Dept Event

Overlook (Student Center, 3rd floor)
Monday, April 7, 2025

CS students, join us for Advise-a-palooza for Fall 2025 registration.

Tapti Palit
UC Davis

Stevenson 1300
Monday, April 14, 2025

C and C++ remain two of the most widely used programming languages, powering everything from operating systems to critical infrastructure. However, their lack of built-in memory safety leaves applications vulnerable to exploitation, and memory corruption vulnerabilities cost the industry billions of dollars annually. To mitigate these risks, software defenses such as Control Flow Integrity (CFI) are deployed, but their effectiveness depends heavily on the precision of underlying program analysis.

In this talk, I will present my research on advancing program analysis techniques to improve software security. First, I will introduce the Invariant-Guided Pointer Analysis technique, which enhances the precision of CFI mechanisms by 59%, thus significantly improving its security guarantees. Then, I will discuss our lab's latest research on automatically transpiling C/C++ code into memory-safe languages, like Rust. Specifically, I will describe our hybrid approach, which combines Large Language Models (LLMs) with program analysis techniques to achieve high-accuracy C-to-Rust transpilation. Together, these efforts improve software security for legacy software and building a foundation for safer, more reliable software systems.

Irfan Mirza
Director of Enterprise Resilience at Microsoft

Stevenson 1300
Monday, April 21, 2025

As artificial intelligence (AI) continues to evolve and permeate various aspects of industry and life, ensuring public confidence in the underlying technologies that result in AI is paramount. This discussion explores the critical role of responsible AI practices and the ethical citizenship that AI providers must adopt to foster and reinforce trust among users. With the anticipated growth of AI applications across industries, computer scientists and engineers will face an increasing burden of responsibility to create systems that prioritize fairness, accountability, and transparency.

We will discuss the current landscape of public perception regarding AI and the essential principles that are foundational to responsible AI development. As AI becomes more pervasive, the industry must engage diverse stakeholders and promote transparency to address concerns about bias and inequality. Furthermore, we must examine the benefits and challenges of regulatory frameworks in guiding ethical practices and enhancing public trust.

An outcome of this discussion is to highlight actionable strategies for AI providers to demonstrate their commitment to responsible citizenship. Ultimately, this discussion will outline a vision for the future, emphasizing that the path to widespread AI adoption hinges on the industry’s ability to uphold its ethical obligations and build lasting trust with the public.

Dept Event

Stevenson 1300
Monday, April 28, 2025

Short presentations of research carried out by Sonoma State Computer Science Students, and CS awards.

Dept Event

Stevenson 1300
Monday, May 5, 2025

Short presentations of capstone projects carried out by Sonoma State Computer Science Students