Form/Huber Colloquia Series: Dr. Siwei Cheng

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Dr. Siwei Cheng
September 20, 2019
12:30PM - 1:45PM
Location
Townshend Hall, Room 248

Date Range
Add to Calendar 2019-09-20 12:30:00 2019-09-20 13:45:00 Form/Huber Colloquia Series: Dr. Siwei Cheng

Please join us for the second Form/Huber colloquium of Autumn 2019, featuring Dr. Siwei Cheng, Assistant Professor of Sociology at New York University. Talk title and abstract are below, all are welcome and encouraged to attend. A light lunch will be served, no RSVP required.

Title: “Flows and Boundaries: Labor Market Mobility in a Network Framework”

Abstract: Although stratification research has long recognized the importance of mapping out the underlying boundaries that govern the flow of workers in the labor market, the current literature faces three major challenges: (1) the determination of mobility boundaries, (2) the incorporation of changes in mobility boundaries, and (3) the incorporation of multi-step flows. We propose a network framework that helps address these challenges. The framework conceptualizes the occupational system as a network, in which the nodes are the detailed occupations and the edges are defined by the volume and direction of workers who flow between the nodes. A flow-based community detection algorithm, known as Infomap, is introduced to uncover the mobility boundaries based on the observed mobility network. Applying this approach to analyze trends in intragenerational occupational mobility in the United States from 1989 to 2015, we find that the boundaries that constrain mobility opportunities have become increasingly rigid over time, while, at the same time, decoupled from the boundaries of big-classes and microclasses. Moreover, these boundaries are increasingly sorting workers into clusters of occupations with similar skill requirements.

Townshend Hall, Room 248 Sociology sociology-info@osu.edu America/New_York public
Description

Please join us for the second Form/Huber colloquium of Autumn 2019, featuring Dr. Siwei Cheng, Assistant Professor of Sociology at New York University. Talk title and abstract are below, all are welcome and encouraged to attend. A light lunch will be served, no RSVP required.

Title: “Flows and Boundaries: Labor Market Mobility in a Network Framework”

Abstract: Although stratification research has long recognized the importance of mapping out the underlying boundaries that govern the flow of workers in the labor market, the current literature faces three major challenges: (1) the determination of mobility boundaries, (2) the incorporation of changes in mobility boundaries, and (3) the incorporation of multi-step flows. We propose a network framework that helps address these challenges. The framework conceptualizes the occupational system as a network, in which the nodes are the detailed occupations and the edges are defined by the volume and direction of workers who flow between the nodes. A flow-based community detection algorithm, known as Infomap, is introduced to uncover the mobility boundaries based on the observed mobility network. Applying this approach to analyze trends in intragenerational occupational mobility in the United States from 1989 to 2015, we find that the boundaries that constrain mobility opportunities have become increasingly rigid over time, while, at the same time, decoupled from the boundaries of big-classes and microclasses. Moreover, these boundaries are increasingly sorting workers into clusters of occupations with similar skill requirements.