Welcome to the Complexity & Society Lab Manual (work in progress)
Lab Overview
Hi, and welcome to the &-Lab at Northeastern University’s Network Science Institute! This manual captures our lab's values, how we operate, and what you can expect as part of our community. Whether you're joining us as a student, collaborator, or visitor, we’re excited to have you here. Our goal is impactful science, conducted with kindness, enthusiasm, and rigor.
Our lab tries to advance network science and complex systems theory and equally emphasizes meaningful societal impact. We develop theoretical frameworks and computational tools to uncover the intricate dynamics of natural and social systems—from causal emergence and network inference, to addressing inequalities in public health, criminal justice, and urban policy. Our research is deeply interdisciplinary, collaborating closely with mathematicians, physicists, epidemiologists, neuroscientists, criminologists, and computer scientists.
Note: This lab manual is inspired by the (phenomenal) one from the Larremore Lab: https://larremorelab.github.io/manual/.
Our Work: Bridging Complexity & Society
Our research is built around two pillars: the development of new tools and theory in complexity science, and the application of these insights to societal problems.
Complexity Science: Our first research mission is to characterize, model, and understand complex systems. From the emergence of multi-scale structure in networks to methods for reconstructing networks from time series data, we develop frameworks that reveal the hidden dynamics of systems.
Societal Impact: The second core of our research focuses on using insights from complexity science to understand and combat systemic inequality, particularly in public health and public safety. Whether it's modeling the spread of infectious diseases or analyzing the racial disparities in the U.S. criminal legal system, we strive to apply our research to make meaningful change in the world.
Through deeply interdisciplinary collaborations and data-driven approaches, we aim to push the boundaries of what is possible in both theoretical and applied network science.
Our Lab Culture
Our lab thrives on a balance of rigor and kindness, high standards and humor. We're serious about our science, but we never lose sight of the fact that we're people first. That means we support each other through the ups and downs, celebrate each other’s wins, and help each other through the various challenges that arise when conducting research. Below are the core values that guide how we work together. We believe that the most impactful science happens when individuals feel cared for, supported, and driven to reach their full potential. The &-Lab reflects these beliefs, and we are dedicated to cultivating a community that fosters:
Caring & Supportive Environment — We recognize that science is a collaborative effort, and every member of our lab is integral to its success. In our lab, personal well-being is just as important as research productivity. We encourage an environment where everyone feels safe to voice concerns, ask questions, and offer support. Our ethos revolves around kindness, empathy, and openness. If you're facing challenges—whether personal or professional—we are here to support you. Science can be hard, and life can be unpredictable, but as a lab, we will find ways to accommodate and help each other, creating a space where everyone can thrive.
Rigorous & Impactful Science — Excellence in research requires both rigor and resilience. Our lab prioritizes thorough, methodologically sound work that seeks to push the limits of our understanding of complex systems. We emphasize reproducibility, transparency, and the use of cutting-edge techniques to address challenging scientific questions. Our research spans from exploring causal emergence in network structures to addressing systemic inequalities in society. We use network reconstruction techniques, information theory, and data-driven insights to inform real-world applications, such as improving public health outcomes or understanding the structural forces behind social disparities. The questions we ask are big, and our science demands careful, thoughtful inquiry—but we support each other in this endeavor.
Fun & Collaborative Science — We believe that rigorous science and fun can—and should—coexist. Curiosity is at the heart of our lab’s success, and we encourage creative thinking and spontaneous exploration. Whether it’s a casual brainstorming session, impromptu whiteboard discussions, or a group outing, we create space for intellectual playfulness. In addition to fostering collaboration through research, we also believe in building personal connections. Lab lunches, coffee breaks, and team-building activities are essential parts of our lab culture. These moments help us form bonds that translate into deeper, more meaningful scientific collaboration.
Inclusivity & Diversity — Our lab is committed to creating a welcoming and inclusive space for people from all walks of life. Diversity in thought, background, and experience enhances our science and strengthens our community. We actively seek to build an environment where everyone—regardless of race, gender, sexual orientation, disability, or socioeconomic status—feels empowered to contribute. We believe in the power of diverse perspectives, and we strive to reflect this in our recruitment efforts, collaborations, and everyday interactions. In our lab, we listen, learn, and grow together.
Open Communication & Transparency — Effective science requires open communication. We emphasize the importance of regular check-ins, feedback, and discussions. Weekly lab meetings provide a platform for sharing progress, discussing challenges, and exploring new ideas. We value a lab environment where questions are encouraged, and no idea is too small to be discussed. If something is unclear or if you are facing roadblocks in your research, we are here to support each other in overcoming those hurdles. Transparency fosters trust, and we are committed to maintaining open lines of communication within the lab.
Engagement with Visiting Speakers — In our lab, we believe that learning and growth extend far beyond the boundaries of our own work. Inviting and engaging with visiting speakers is a critical part of our lab culture. Whether they are presenting cutting-edge research, sharing career advice, or providing insights into interdisciplinary applications, we view these interactions as invaluable opportunities for intellectual and professional development. As a lab, we encourage all members to take a proactive role in this process by:
Inviting Speakers: If you encounter someone whose work you admire or who could provide valuable insights to our group, we encourage you to invite them to give a talk or engage with the lab. You are also welcome to propose ideas for external collaborators or guests.
Active Participation: During these visits, we expect everyone to be fully present and engaged. That means attending talks, participating in discussions, and asking thoughtful questions. We value respectful and attentive interactions, recognizing that visiting speakers are taking time to share their expertise with us.
Ongoing Engagement: Beyond the initial visit, we encourage lab members to follow up with speakers who resonate with them—whether that’s asking for feedback on a project, seeking mentorship, or exploring potential collaborations. Building these connections can have a lasting impact on your academic and professional journey. The exchange of ideas with external voices enriches the lab and pushes our collective thinking in new directions. By being proactive, respectful, and engaged, we ensure that these interactions are mutually beneficial and reflect the values of our lab.
We love having guests visit the lab, and these visits are one of the best ways to grow and learn from the broader community. I encourage everyone to be actively involved when we invite someone to speak or collaborate—whether that’s helping to organize, asking thoughtful questions, or just being a good host. Being present and respectful during a speaker’s visit is really important. We want them to feel welcomed and appreciated, and we also want to get the most out of their time with us! That means attending talks, participating in discussions, and following up if their work resonated with you. Building connections with outside researchers is an incredible opportunity—don’t miss out on it. Also, if you have someone in mind you’d like to invite, please let me know! Whether they’re a mentor, someone you admire, or just someone whose work you find interesting, you’re always welcome to propose speakers.
If you are interested in visiting the lab—whether it’s a quick visit through Boston or an extended internship, visiting researcher position, or collaboration—shoot us an email!
Teaching & Mentorship — Teaching is a big part of what I love about being an academic, and it’s something I aim to share with all members of our lab. Whether through formal classes, informal whiteboard sessions, or one-on-one discussions, teaching and learning happen constantly in our lab. And it’s not just me doing the teaching—everyone here has knowledge to share, and we believe in creating opportunities for all lab members to contribute to the learning environment.
In addition to your research, you may have opportunities to be a Teaching Assistant (TA) for some of the courses I teach. TAs play a vital role, not just in managing logistics or grading, but in shaping the student experience—leading discussions, helping students through difficult concepts, and guiding them in applying what they’ve learned. If you’re interested in teaching, let me know! Being a TA can be a great way to hone your communication skills and deepen your understanding of the material.
I also encourage lab members to guest lecture on topics they’re passionate about or especially knowledgeable in. Whether it’s leading a session on network reconstruction techniques or introducing a new statistical tool, these opportunities allow you to take ownership of your expertise and build confidence as an educator. You’ll have the freedom to craft your own lesson, and I’ll be there to support you every step of the way.
Mentorship is equally important to me. I know that everyone’s needs are different—some students thrive with lots of guidance, while others prefer to work more independently. I try to tailor my mentoring to fit your style, whether you need frequent check-ins or just occasional feedback. Beyond research, I’ll also support you in finding opportunities to attend conferences, participate in workshops, or engage in other activities that will help you grow.
Expectations
We all play a role in shaping the lab environment, but I recognize that students and postdocs come in with different levels of experience, and so the expectations for each group are a bit different. Here's what you can expect from me, and what I hope to see from you:
For Students
Be Curious: This is your time to explore! Ask questions, experiment with new ideas, and dive deep into the subjects that interest you. Your growth is the priority, and the lab is here to help you on that journey.
Be Open to Learning: Research can be challenging, and it’s okay not to have all the answers right away. Embrace the process of trial and error, and don’t hesitate to ask for help—whether it’s from me or your peers.
Engage in Teaching Opportunities: If you’re a graduate student, you may have opportunities to TA for some of the courses I teach. It’s a great chance to develop your teaching skills, deepen your understanding of the material, and help others learn. And if you're especially comfortable with a topic, I encourage you to guest lecture!
Be Collaborative: You’re not alone on this journey. Share ideas, offer feedback, and help your peers whenever you can. Collaboration is key to making great science happen.
Communicate Your Needs: Whether it's research-related or personal, don't hesitate to reach out. I’m here to support you through the highs and lows, and it’s important to keep the lines of communication open.
For Postdocs
Lead with Independence: You’re here to build on your expertise and take ownership of your research. While I’ll always be here to provide support and mentorship, I expect you to drive your projects forward with a high level of independence.
Mentor Others: As a postdoc, you play a crucial role in mentoring students. Whether it’s offering guidance on projects, helping with technical challenges, or being a sounding board for ideas, your experience is invaluable to the lab’s success.
Take Teaching Opportunities: If you’re interested in gaining more teaching experience, there may be opportunities to guest lecture or even co-teach. These experiences are a great way to refine your teaching style and showcase your expertise.
Contribute to the Lab's Vision: As a senior member of the lab, your input is highly valued. Whether it's suggesting new directions for research or offering feedback on lab processes, I look to you to help shape the future of the lab.
Communicate & Collaborate: Like the students, I expect open communication from you, too. Regular check-ins, whether they’re formal or informal, help keep everything on track. The lab thrives on collaboration—so engage with your peers, exchange ideas, and contribute to the supportive culture we're building.
For Me (Your PI):
I’m Here for You: Whether you need research guidance, career advice, or just someone to listen, my door is always open.
Support for Your Growth: My role is to help you grow as a scientist and as a person. I’ll provide the mentorship, resources, and opportunities you need to succeed.
Open Communication: We’ll have regular check-ins, but feel free to come to me anytime—whether it’s to discuss your progress, challenges, or anything else on your mind.