Panos Ipeirotis is a Professor at the Leonard N. Stern School of Business at New York University, affiliated with the Department of Technology, Operations, and Statistics. He also serves as the George A. Kellner Faculty Fellow and is associated with the Center for Data Science and Computer Science departments at NYU. PhD in Computer Science (Columbia University, 2004) MSc in Computer Science (Columbia University, 2001) BSc in Computer Engineering & Informatics (University of Patras, 1999) His research spans crowdsourcing, machine learning, human-AI collaboration, online labor markets, and social media analytics. He pioneered human-machine loop systems that combine human and machine intelligence to achieve superior outcomes. His work has applications in data quality assurance, visual media search (e.g., Google Project Glass), and economic valuation of user-generated content. Recent publications focus on algorithmic fairness in hiring systems, occupational segregation analysis, and theoretical advancements in crowdsourcing consensus mechanisms. Earlier work includes foundational studies on data quality in crowdsourcing platforms, economic impacts of product reviews, and query optimization for text-centric tasks. 2015 Lagrange Prize in Complex Systems NSF CAREER Award SIGKDD Test of Time Award (2020) Multiple Best Paper awards (WWW 2011, KDD 2008, SIGMOD 2006) He has received significant grants, including a $1.5 million Google Research Grant (2013) for integrating crowdsourcing with machine learning algorithms. His work bridges computer science, economics, and social psychology, with implications for policy-making and business strategy.
Junfu Zhang is a Professor of Economics and Department Chair at Clark University. His research focuses on applied microeconomics, particularly urban and regional economics, with an emphasis on urbanization in China, entrepreneurship, regional development, and racial housing segregation. He holds a B.A. from Renmin University of China (1993), and M.A. and Ph.D. from Johns Hopkins University (1999, 2001). Prior to joining Clark in 2006, he was a research fellow at the Public Policy Institute of California and a Brookings Institution fellow (2000–2001). He has been an IZA Research Fellow since 2007 and served as President of the Chinese Economists Society (2019–2020). Education: B.A., International Economics, Renmin University of China, 1993 M.A., Economics, Clark University, 1997 M.A., Economics, Johns Hopkins University, 1999 Ph.D., Economics, Johns Hopkins University, 2001 Research Interests: Dr. Zhang's research explores urbanization dynamics in China, including land use policies, housing tenure systems, and economic segregation. His work also addresses entrepreneurship, high-tech industrial clusters, and the economic impacts of urbanization. Recent studies include analyses of land regulation, Super Bowl economic effects, and gender competition in labor markets. Recent Research Trends: His articles reflect a focus on China's socio-economic challenges, such as urban land policies, housing wealth effects, and regional development disparities. Collaborative projects with institutions like IZA and CES highlight interdisciplinary engagement. Awards and Affiliations: IZA Research Fellow (2007–present) Former President, Chinese Economists Society (2019–2020) Advising and Grants: No specific grant or student advising details are listed, though his research often involves collaborative teams. His work is supported by institutional affiliations and academic networks. Labs and Teams: No dedicated labs are mentioned, but his research engages interdisciplinary teams focusing on urban economics and regional policy.
Dr. Olle Järv is an Academy Research Fellow at the University of Helsinki's Department of Geosciences and Geography. As Docent in Human Geography and holder of a joint PhD from University of Tartu and Ghent University, his research focuses on leveraging big data sources like mobile phone records and social media for analyzing human mobility patterns across European cross-border regions. Key research areas: Spatial segregation, urban diversity, transnationalism, and pandemic-induced mobility changes Current projects: BORDERSPACE (2020-2025) – Mapping transnational spaces through mobility data MOBI-TWIN (2023-2026) – Regional mobility patterns in twin transitions WinWin4WorkLife (2024-2027) – Sustainable cross-border remote work His methodological innovations include developing tools for analyzing social media data and mobile phone records to study urban dynamics. Recent recognitions include the 2024 Research Council of Finland Award and 2021 Best Paper Award from Journal of Location Based Services.
Christopher J. Palmer is an Associate Professor of Finance at the MIT Sloan School of Management, specializing in financial decision-making, credit markets, and policy interventions. His research focuses on how individuals and institutions respond to economic upheavals in areas like bankruptcy, retirement savings, and real estate. He holds a PhD in Economics from MIT and a BA in Economics and Mathematics from Brigham Young University. Palmer’s work has been published in top journals such as the American Economic Review , Journal of Finance , and Review of Financial Studies . He explores topics including racial disparities in bankruptcy outcomes, consumer payment behavior, and the effects of quantitative easing. His research is supported by affiliations with the National Bureau of Economic Research (NBER) and the Jameel Poverty Action Lab (J-PAL). Key honors include the 2022 Jamieson Prize and the 2019 Society for Financial Studies Best Paper Award. Palmer has contributed to public debates on policy issues like rent control and retirement savings through media outlets such as The New York Times , Bloomberg , and Vox .
Luca De Benedictis is a Professor of International Economics and Network Analysis at the University of Macerata's Department of Economics and Law. His research focuses on international trade empirics, including trade specialization measurement, network analysis, and causal models. He has authored numerous articles on topics like gravity models, migration impacts, and historical trade networks. His work spans journals such as the Journal of the Royal Statistical Society and Network Science . He teaches courses in International Economics and Network Analysis. His research interests include economic geography, policy evaluation, and applied econometrics. Notable projects include analyzing the Erasmus Program's inclusivity, Roman road networks' legacy, and immigration's effect on trade. De Benedictis has secured funding from EU initiatives like COSTNET and GeComplexity, focusing on network data science and economic systems. He serves on editorial boards of journals like Italian Economic Journal and Journal of Historical Network Research . His work bridges theoretical models with empirical applications in trade, migration, and policy.
Bradley D. Olsen is a full professor in the Department of Chemical Engineering at the Massachusetts Institute of Technology (MIT), where he leads research at the intersection of polymer science, soft matter physics, and bioengineering. His work focuses on designing materials for critical applications in biotechnology, hemostasis, and sustainable polymer development while advancing fundamental understanding of polymer network mechanics and self-assembly. Education: Ph.D. in Chemical Engineering, University of California Berkeley (2007) S.B. in Chemical Engineering, Massachusetts Institute of Technology (2003) Olsen's research spans protein-based materials, block copolymer phase behavior, and mechanochemical hydrogels. He has pioneered methods for quantifying polymer network topology, developing hemostatic nanoparticles, and creating bio-inspired materials for selective biomolecular transport and medical applications. His recent publications emphasize data-driven approaches to polymer characterization and educational outreach in materials science. Scientific Awards: American Physical Society (APS) Fellow (2023) Fulbright Amazonia Scholar (2023) Alexander and I. Michael Kasser Chair in Chemical Engineering (2021) ACS Macro Letters Young Investigator Award (2021) MIT Committed to Caring Honor (2019) AIChE Owens Corning Early Career Award (2019) APS Dillon Medal (2018) Kavli Emerging Leader in Chemistry (2017) ACS Polymer Division Fellow (2016) Camille Dreyfus-Teacher Scholar (2015) Alfred P. Sloan Research Fellow (2014) NSF Career Grant (2013) NIH Postdoctoral Fellowship (2008-2009) Hertz Fellow (2003-2007) Barry M. Goldwater Scholarship (2002) Olsen has received significant grant support including NSF Career (2013) and AFOSR (2012) awards. His teaching activities include innovative international outreach like the 2025 soccer-themed science camp in Brazil. The Olsen Group at MIT explores advanced materials with applications ranging from trauma care to sustainable polymers.
Maren Toft is a Professor in the Department of Sociology and Human Geography at the University of Oslo's Faculty of Social Sciences. Her academic career has progressed from Research Assistant (2013-2014) to PhD Candidate (2014-2018), Postdoctoral Fellow (2018-2022), Associate Professor (2022), and now Professor. Her research focuses on: Class theory and theory of elites Social mobility and class structuration Segregation and urban inequality Social capital and networks of power Advanced quantitative methods including social sequence analysis and correspondence analysis Toft's publication record shows a consistent focus on elite formation, wealth accumulation, and class reproduction. Her work frequently employs longitudinal approaches to examine how social origins influence life trajectories, particularly among the upper classes. She has made significant contributions to understanding how class structures persist in Scandinavian welfare states, challenging assumptions about equality in these societies. Her major scientific awards include: His Majesty the King's Gold Medal for her 2018 PhD dissertation 'Biographies of privilege' Norwegian sociological association's award for best international publication in 2020/2021 Norwegian sociological association's award for best international publication in 2017 Kunnskap Oslo's award for best Oslo-related Research in 2015 Norwegian sociological association's award for research dissemination in 2018 Toft actively supervises PhD students including Iselin Hewitt (studying urban planning and gentrification), Marte Lund Saga (examining business-politics networks), and Stian Uvaag (researching sibling similarities in mobility). She serves on the board of both the Department of Sociology and Human Geography and the Norwegian Sociological Association. She is involved in several major research projects including HISTCLASS, The Oslo Register Data Classification (ORDC), The Salmon Elite (SALELITE), and Weaving the fabric of Elite Bonds (WEB), which collectively examine various dimensions of elite formation, power structures, and social inequality in Norway and internationally.
Emilio A. Parrado is the Dorothy Swaine Thomas Professor of Sociology at the University of Pennsylvania's School of Arts & Sciences and Director of the Population Studies Center. His research focuses on migration dynamics, particularly Hispanic populations in the U.S., international migration patterns, and social/demographic changes in Latin America. He combines quantitative and qualitative methods, including original survey and ethnographic data. Education: Ph.D. (Sociology, University of Chicago, 1997), M.A. (Sociology, University of Chicago, 1994), B.A. (Sociology, University of Buenos Aires, 1988). Key research areas include: Migrant health risks and transnational mobility (e.g., HIV/STI patterns at the U.S.-Mexico border) Gendered impacts of migration on labor markets and family structures Demographic transitions and social inequality in Latin America, including post-pandemic labor market shifts in Argentina Recent work emphasizes deportation effects on mental health, regional migration trends to Buenos Aires, and the intersection of immigration policy with fertility and urban development. His Migrante Project focuses on Mexico-U.S. border health observatories. Awards: None explicitly listed. Active in grants related to migrant health and labor studies. Labs/Teams: Leads the Population Studies Center and collaborates with the Latin American and Latino Studies Program at UPenn.
Stephen Billings is an Associate Professor of Finance at the Leeds School of Business, University of Colorado Boulder, where he holds the Global Real Estate Capital Markets Chair position. He serves as the faculty director of the MS in Real Estate program and research director for the CU Real Estate Center. His work spans multiple research centers including the Center for Research on Consumer Financial Decision Making and the Michael A. Klump Center for Real Estate. Billings received his PhD in Economics from the University of Colorado, a MS in urban planning from the University of North Carolina, and a BS in economics from Georgetown University. Prior to joining CU Boulder in 2016, he was faculty at the University of North Carolina Charlotte with appointments in both economics and public policy, where he also served as faculty director for the real estate center. His research focuses on the intersection of housing, schools, neighborhoods and crime, addressing critical policy issues including the impact of public investment in light-rail transit on neighborhoods, school segregation's influence on academic achievement and crime, neighborhood gentrification causes, lead-based paint in low-income housing, and the effects of sea level rise and natural disasters on neighborhood sorting and household finances. Billings employs sophisticated analysis of large micro-datasets with studies based on data and policies in Charlotte, NC and Denver, CO. His work connects urban economics with public policy, demonstrating how neighborhood environments shape individual outcomes across multiple dimensions. Billings' recent publication record demonstrates a consistent focus on neighborhood effects, school choice impacts, crime economics, and housing market dynamics. His work frequently examines the intersection of race, housing, and economic outcomes, with particular attention to policy implications. He has developed innovative methodological approaches to studying residential amenities and neighborhood spillovers, with increasing attention to climate change impacts on housing markets. His research appears in top journals including The Quarterly Journal of Economics, American Economic Review: Insights, and Journal of Urban Economics. As an educator, Billings teaches undergraduate and masters classes in real estate finance and economics, as well as doctoral and masters level courses on cost-benefit analysis and statistical methods. He has extensive consulting experience conducting economic impact studies, including assessments of North Carolina's public higher education system, affordable housing needs in Colorado communities, and the economic effects of marijuana legalization on property markets. His practical policy work complements his academic research, creating a bridge between theoretical insights and real-world applications. Billings leads significant research initiatives through the CU Real Estate Center, where he directs studies examining the impact of business improvement districts and other urban development policies. His work bridges academic research with practical policy applications, making substantial contributions to our understanding of how housing, education, and neighborhood environments shape individual outcomes and community development. His December 2023 memo on the HUD Officer Next Door Program exemplifies his engagement with current housing policy issues.
Atsuko Tanaka is an Associate Professor in the Department of Economics at the University of Calgary. Her research focuses on labor markets, health economics, and public policy, particularly examining topics such as female labor supply, skill investment, and pension reforms. She holds a Ph.D. in Economics from the University of Wisconsin-Madison (2013), alongside advanced degrees from Cornell University and the University of Tokyo. Education Ph.D. Economics, University of Wisconsin-Madison (2013) M.S. Economics, University of Wisconsin-Madison (2010) M.S. Applied Economics and Management, Cornell University (2007) B.A. Agricultural Economics, University of Tokyo (2004) Research Interests Tanaka’s work explores how health shocks, financial constraints, and policy interventions influence labor market outcomes. She investigates topics such as post-educational skill accumulation via college loans, strategic medical treatment choices under reimbursement reforms, and the macroeconomic effects of pension system transitions. Her research combines rigorous econometric methods with real-world administrative data to inform evidence-based policy. Awards and Grants SSHRC Connection Grant (2022, co-PI: Apostolos Serletis) National Science Foundation Extreme Science Grant (2021) SSHRC Insight Development Grant (2016) Susan Jane Blake Kocin Award, University of Wisconsin-Madison (2011) Grants and Collaboration Her research has been supported by major grants, including SSHRC and NSF funding. She collaborates with scholars on projects like analyzing physician behavior under reimbursement reforms, auditing firm dynamics, and international aid allocation strategies. Her work bridges theoretical models with empirical evidence to address complex socio-economic challenges.
Xiaoyue Shan is an Assistant Professor of Economics at the National University of Singapore (NUS), located at 1 Arts Link, AS2 #05-36. She holds a Ph.D. in Economics from the University of Zurich (2021) and previously conducted postdoctoral research at the Wharton School of the University of Pennsylvania. Her research focuses on labor economics, behavioral/experimental economics, and gender economics, employing experimental and quasi-experimental methods to study topics like gender disparities, discrimination, social interactions, and skill development. Her work explores how peer groups influence personality traits (e.g., conscientiousness, competitiveness), discrimination mechanisms in labor markets, and the impact of policies on gender dynamics. Notable studies include examining sequential spillover effects in resume evaluations and analyzing pension systems' effects on child investment in China. Teaching interests align with her research, emphasizing behavioral and experimental economics. She is reachable at x.shan@nus.edu.sg .
Lance Freeman is the Penn Integrates Knowledge (PIK) Professor of City and Regional Planning and Sociology at the University of Pennsylvania's School of Arts & Sciences. His research focuses on neighborhood dynamics, gentrification, urban poverty, housing policy, and the interplay between the built environment and public health. He holds a Ph.D. in City and Regional Planning from the University of North Carolina at Chapel Hill (1997), an MRP in Regional Planning (1991), and a B.S. in Business Administration from SUNY Buffalo (1987). Prior to academia, he worked at Mathematica Policy Research and as a City Planner at the New York City Housing Authority. Freeman teaches courses on urban planning theory, quantitative methods, and community development at Columbia University and the University of Delaware. His research interests include understanding neighborhood change, leveraging social media and technology for urban analysis, and promoting equitable urban development. Key publications include There Goes the Hood: Views of Gentrification from the Ground Up (2006), A Haven and a Hell: The Ghetto in Black America (2019), and co-authored Planning and Control of Land Development (2020). He has contributed to debates on inclusionary zoning, racial equity planning, and the impacts of urban policies on marginalized communities. Freeman's work intersects urban sociology, policy analysis, and spatial demography. His recent studies explore gentrification migration patterns, the role of social media in neighborhood change, and historical segregation dynamics. He advocates for evidence-based planning to address urban inequality and spatial injustice.
Sean F. Reardon is the Professor of Poverty and Inequality in Education and a Senior Fellow at the Stanford Institute for Economic Policy Research (SIEPR) at Stanford University . He also holds a Professor (by courtesy) of Sociology . His work focuses on social and educational inequality, including residential and school segregation, racial/ethnic and socioeconomic disparities in academic achievement, and causal inference methods. Education: Ed.D., Harvard University, Educational Administration, Planning, and Social Policy (1997) M.Ed., Harvard University, Educational Administration, Planning and Social Policy (1992) M.A., University of Notre Dame, International Peace Studies (1991) B.A., University of Notre Dame, Program of Liberal Studies; Minor in Honors Mathematics (1986) Research Interests center on the causes and patterns of educational and racial inequality, the effects of school integration policies, and income inequality's social consequences. His Stanford Educational Opportunity Research Lab analyzes achievement gaps and segregation trends across U.S. school districts using large-scale datasets. Recent Publications highlight cross-national achievement gap comparisons, pandemic recovery disparities, and methodological advancements in segregation measurement. His work often integrates Data Sciences and Sociology to address policy-relevant questions. Awards Elected Member, American Academy of Arts and Sciences Elected Member, National Academy of Education Advising includes mentoring Doctoral Students like Tyler McDaniel and Postdoctoral Researchers like Farah Mallah. His Stanford Interdisciplinary Doctoral Training Program in Quantitative Education Policy Analysis (2009–2021) trained future scholars in rigorous policy methods.
Stefan Kipfer is a Professor at the Faculty of Environmental and Urban Change , York University. He coordinates the Cities, Regions, Planning program and holds a PhD in Political Science from York University. His research focuses on the intersections of spatial organization, social order, and political rule, with particular emphasis on urban politics, racial capitalism, and anti-colonial theory. Education: PhD in Political Science, York University MES in Urban Political Economy and Ecological Politics, York University BA in Political Science and French, York University Kipfer's research spans transnational urban studies, critical theory, and radical political ecology. He explores: Urban social movements in Zurich, Toronto, and Paris State interventions in public housing, transit, and environmental policy The capitalist and racialized dimensions of urbanization Right-wing populism and neo-fascism Connections between Henri Lefebvre, Frantz Fanon, and Antonio Gramsci Recent work analyzes: Urbanization as neocolonial process Anti-racist and decolonial spatial strategies Transit justice and free public services Comparative urban governance Resistances to far-right regimes Articulation theory and political strategy He supervises graduate students in Environmental Studies, Geography, and Political Science, and has contributed to critical urban theory through publications linking Marxist, anti-colonial, and feminist frameworks.
Dr. Kenneth Joseph is an Associate Professor in the Department of Computer Science and Engineering at the University at Buffalo , part of the School of Engineering and Applied Sciences . He serves as Associate Director of the Institute for Artificial Intelligence and Data Science and leads the Computation and Equity Lab (cubelab) , focusing on social inequality through computational measures and models. Education: PhD, MS, and BS in Societal Computing from Carnegie Mellon University (2016, 2012, 2010) Research Interests: Computational Social Science, Network Science, Gender Studies, and AI for Social Good Notable Work: Gender disparities in academia, predictive modeling for foster care and urban policy, and social media rumor analysis Awards: UB Exceptional Scholar—Young Investigator Award (2021) Advising: Mentored students like Yuhao Du, Jason Yan, Arjunil Pathak, and Navid Madani on projects spanning Twitter bios, foster youth services, and algorithmic fairness.
