Zotero is a free and convenient tool that can be used to help you manage information for your research, insert citations into your writing and easily create bibliographies. This session will provide an overview of how Zotero can support your work throughout the research process, with hands-on opportunities to practice using the tool.

After attending this workshop, you will have learned how to use Zotero to:

• save time with the research process
• create better citations and bibliographies
• organize all the books / articles you find during the research process
• use advanced features in Zotero

This session will be held online via Zoom. A confirmation with a link to the session will be emailed to you after registration.

Register at https://libcal.lakeheadu.ca/event/3797843.

This workshop will introduce you to Lakehead's OMNI search system, and other resource tools which will help fulfill your research needs at Lakehead University. After attending this workshop, you will be able to:

• find books on your topic, and request books from other Ontario universities
• find peer reviewed scholarly articles
• seek further assistance from the library

This session will be held online via Zoom. A confirmation with a link to the session will be emailed to you after registration.

Register at https://libcal.lakeheadu.ca/event/3797841.

Academic Integri-TEA is community of practice that provides a safe and collaborative space for faculty to talk about the common academic integrity issues they are experiencing in the classroom and share helpful tips with their peers. Attendees are invited to make themselves a cup of tea (or coffee) and join with other instructors as we strive to positively influence the academic integrity culture at Lakehead University.

Please join the Computer Science Department for the upcoming thesis defense:

Presenter: Mohammad Khosravani

Thesis title: Argument Summarization: Enhancing Summary Generation and Evaluation Metrics

Abstract: In the current era of mass digital information, the need for effective argument summarization has become paramount. This thesis explores the domain of argument summarization, focusing on the development of techniques and evaluation metrics to improve the quality of summarization models. The study first investigates the task of key point analysis, and the challenges associated with previous approaches to it, emphasizing the significance of coverage of the summary. To address these challenges, we propose a novel clustering-based framework that leverages the inherent semantics of arguments to identify and group similar arguments. The proposed approach is evaluated on the benchmark dataset and compared with previous state-of-the-art methods, demonstrating its effectiveness. In addition to the proposed framework, this thesis also presents an analysis of the previous evaluation metric for argument summarization. Commonly used metric, ROUGE is evaluated, revealing its limitation in capturing the nuanced aspects of argument quality. To this end, we introduce new evaluation metrics and methods that consider the coverage and redundancy of the generated summaries, providing more accurate and informative assessments of summarization models. We further show that our evaluation metric has a better correlation with actual summary quality, whereas previous metrics fail to capture this correlation. The implementation is available online.


Committee Members:
Dr. Amine Trabelsi (supervisor, committee chair), Dr. Xing Tan, Dr. Vijay Mago (York University)


Please contact grad.compsci@lakeheadu.ca for the Zoom link. Everyone is welcome.

Presented by: Mouaad Boughellaba
Supervisor: Dr. Abdelhamid Tayebi
Thesis Committee Members: Dr. Kefu Liu, Dr. Xiaoping Liu, & Dr. Amir Aghdam
Session Chair: Dr. Salama Ikki

Date and time: Thursday, April 25, 2024 at 9:00AM

Join Zoom Meeting
https://lakeheadu.zoom.us/j/99683295153?pwd=cmhJa1c0QmU5WUs4WnZ4UU5XbXYv...
Meeting ID: 996 8329 5153
Passcode: 817410




Title: Distributed Cooperative State Estimation and Control for Multi-Agent Autonomous Systems

ABSTRACT

This thesis addresses several problems related to distributed cooperative state estimation and control design for multi-agent rigid-body autonomous systems, namely bearing-based distributed pose estimation, distributed attitude estimation on SO(3), and global attitude synchronization on SO(3). We consider the distributed pose estimation problem for multi-agent rigid-body systems, under a directed graph topology, assuming that two agents have access to their respective poses. First, we consider the case where all agents have static positions and time-varying orientations, and propose two distributed pose estimation schemes with almost global asymptotic stability guarantees. Thereafter, we consider the case where the agents positions and orientations are time-varying, and propose a distributed pose observer with local exponential stability guarantees. The three proposed estimation schemes rely on individual angular velocity (and linear velocity in the case of agents with time-varying positions) measurements and local information exchange between neighboring agents (relative time-varying bearing measurements and estimated poses). We also consider the problem of distributed attitude estimation of multi-agent systems, evolving on SO(3), relying on individual angular velocity and relative attitude measurements, under an undirected, connected and acyclic communication graph topology. We propose two distributed attitude observers on SO(3); a continuous version and a hybrid version, endowed respectively with almost global asymptotic stability and global asymptotic stability guarantees. In addition, the proposed hybrid attitude estimation scheme is used to solve the pose estimation problem of multi-agent rigid-body systems, with global asymptotic stability guarantees, relying on individual linear and angular velocity measurements as well as local relative bearing and relative orientation measurements. Finally, we propose a distributed hybrid attitude synchronization scheme (with and without individual velocity measurements) for a group of rigid body systems evolving on SO(3) under an undirected, connected and acyclic communication graph topology, with global asymptotic stability guarantees.

An evening dedicated to capturing the greatness of females in music. With works from iconic women such as Clara Schumann, Sara Bareilles, and Laufey, this concert's eclectic program brings something for most-everyone's musical tastes.

Classic characters like Mimi, from Puccini's La Bohème, Manon herself, from Massenet's Manon, and new ones, like Jenna from Waitress, are brought to life with stunning piano accompaniment from Mariko Kamachi Cosbey, and captivating characterizations from Brenna. Beyond this, selections from the Unknown Kurt Weill performed by Teresa Stratas are featured, and even Lieder from the lesser known Schumann (Clara).

Breathing life into well known jazz standards and new jazz are Anang Binesi (percussion) and Thomas Poulin (double bass).

Join us for an evening of celebrating both the accomplishments of Brenna, as she presents her graduating recital, and the many female musicians who came before her, lighting her path.

Admission is free, donations are accepted at door.

Join Amani Sloley and friends for an unforgettable evening featuring the premiere of his compositions, showcasing his journey as a composition major.

Amani is grateful for Dr. Aris Carastathis, Dr. Darlene Chepil Reid, and Dr. Sean Kim's mentorship. From Introspective choral pieces like “Once Was You” to mixed-media electroacoustic piece, “The Giants Sleeping,” will come to life through the talents of current Lakehead music students! I can’t wait to see you there!

Refreshments will be served during the morning and afternoon sessions. Everyone is welcome to attend. 

The Biotechnology PhD candidate, Xuantong Chen will present his research Development of Symbiosis of Marine Algae Chrysotila and Bacteria Nitratireductor and Large-Scale Production of Marine Microalgae in Inland Environment.

Due to energy, environmental, and food-related concerns, research on microalgae is increasingly gaining attention. Microalgae can utilize photosynthesis to synthesize and accumulate various valuable bioproducts such as lipids, proteins, polysaccharides, and pigments, and can also absorb and fix carbon dioxide. Therefore, efficiently, and cost-effectively cultivating specific algae species has become a crucial goal. However, various challenges hinder the development of algae during cultivation. One of the issues that needs to be addressed is the cultivation cost of microalgae, which involves optimizing the cultivation process and innovating the use and methods of cultivation devices. Therefore, my research explored the indoor and outdoor cultivation conditions of marine microalgae in inland areas over a long time period and reduce cultivation costs by designing and using new photobioreactor, thereby further promoting the process of microalgae research.

Committee Members: Dr. Wensheng Qin (Supervisor), Dr. Heidi Schraft, Dr. Baoqiang Liao, Dr. Haipeng Guo (external), and Dr. Ahmed Elshaer (chair).

Everyone is welcome.

For more information contact Brenda Magajna at phd.ses@lakeheadu.ca

Come visit a furry friend for some much needed relaxation in the SAS Multi Use Access Lounge for the last time this term. Thursday from 2 to 3 pm in the tunnels, SC 0004. All are welcome!