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  • Article

Fast Subset Scan for Multivariate Spatial Biosurveillance

By: Daniel B. Neill, Edward McFowland III and Huanian Zheng
We present new subset scan methods for multivariate event detection in massive space-time datasets. We extend the recently proposed 'fast subset scan' framework from univariate to multivariate data, enabling computationally efficient detection of irregular space-time... View Details
Keywords: Algorithms; Disease Surveillance; Event Detection; Scan Statistics; Spatial Scan
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  • April 2021
  • Article

A Model of Multi-Pass Search: Price Search Across Stores and Time

By: Navid Mojir and K. Sudhir
In retail settings with price promotions, consumers often search across stores and time. However, the search literature typically only models one pass search across stores, ignoring revisits to stores; the choice literature using scanner data has modeled search across... View Details
Keywords: Consumer Search; Multi-pass Search; Price Search; Store Search; Spatial Search; Temporal Search; Spatiotemporal Search; Dynamic Structural Models; MPEC; Price Promotions; Store Loyalty; Consumer Behavior; Price; Spending; Marketing; Mathematical Methods
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  • Research Summary

The Economics of Search

Utilizing data on web searches, we characterize the economics of search and estimate the path of diffusion for information, allowing us to specify how choice sets are actually formed among consumers and examine the impact of cybergeography vs. spatial geography. Joint... View Details
  • 2015
  • Article

Scalable Detection of Anomalous Patterns With Connectivity Constraints

By: Skyler Speakman, Edward McFowland III and Daniel B. Neill
We present GraphScan, a novel method for detecting arbitrarily shaped connected clusters in graph or network data. Given a graph structure, data observed at each node, and a score function defining the anomalousness of a set of nodes, GraphScan can efficiently and... View Details
Keywords: Biosurveillance; Event Detection; Graph Mining; Scan Statistics; Spatial Scan Statistic
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  • 2011
  • Article

Scalable Detection of Anomalous Patterns With Connectivity Constraints

By: Skyler Speakman, Edward McFowland III and Daniel B. Neill
We present GraphScan, a novel method for detecting arbitrarily shaped connected clusters in graph or network data. Given a graph structure, data observed at each node, and a score function defining the anomalousness of a set of nodes, GraphScan can efficiently and... View Details
Keywords: Biosurveillance; Event Detection; Graph Mining; Scan Statistics; Spatial Scan Statistic
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  • 14 Mar 2023
  • Cold Call Podcast

Can AI and Machine Learning Help Park Rangers Prevent Poaching?

Keywords: Re: Brian L. Trelstad; Computer; Information Technology; Technology
  • 21 Oct 2008
  • First Look

First Look: October 21, 2008

Entrepreneurship: How Much of the Spatial Distribution Can We Explain? Authors:Edward L. Glaeser and William R. Kerr Abstract Why are some places more entrepreneurial than others? We use Census Bureau data to study local determinants of... View Details
Keywords: Martha Lagace
  • 17 Jan 2012
  • First Look

First Look: January 17

determine the equilibrium supply chain structure. These operational tradeoffs arise as a result of the geographic constraints posed by the availability of arable land and the spatial population distribution. We model the interdependent... View Details
Keywords: Sean Silverthorne
  • 22 Sep 2009
  • First Look

First Look: September 22

and Migrating Clusters of Innovation Author:William R. Kerr Publication:Journal of Urban Economics (forthcoming) Abstract We investigate the speed at which clusters of invention for a technology migrate spatially following breakthrough... View Details
Keywords: Martha Lagace
  • 18 Dec 2012
  • First Look

First Look: December 18

before September 2012 to identify survey instruments used to measure teamwork and to assess their conceptual content, psychometric validity, and relationships to outcomes of interest. We searched the ISI Web of Knowledge database and... View Details
Keywords: Carmen Nobel
  • 27 Jun 2017
  • First Look

First Look at New Research and Ideas, June 27

premised on the proposition that proximity reduces the cost of search and coordination. Thus, learning from proximate parties is easier than from more distant ones. As a consequence, nearby individuals, teams, and firms share overlapping... View Details
Keywords: Sean Silverthorne
  • 05 Dec 2017
  • First Look

First Look at New Research and Ideas, December 5, 2017

strength of the country, is increasingly failing to provide stable policy decisions addressing the issues Sweden is facing. Publisher's link: https://www.hbs.edu/faculty/Pages/item.aspx?num=53584 October 2017 Review of Economics and Statistics A Field Experiment on... View Details
Keywords: Sean Silverthorne
  • 07 May 2013
  • First Look

First Look: May 7

incumbent attracting and retaining more profitable customers over time. Download working paper: https://www.hbs.edu/faculty/Pages/item.aspx?num=39914 Clusters of Entrepreneurship and Innovation By: Chatterji, Aaron, Edward Glaeser, and William Kerr Abstract—This paper reviews... View Details
Keywords: Carmen Nobel
  • 28 Aug 2018
  • First Look

New Research and Ideas, August 28, 2018

Collaboration By: Bernstein, Ethan, and Stephen Turban Abstract— : Organizations’ pursuit of increased workplace collaboration has led managers to transform traditional office spaces into “open,” transparency-enhancing architectures with fewer walls, doors, and other... View Details
Keywords: Dina Gerdeman
  • 29 Sep 2009
  • First Look

First Look: September 29

http://papers.ssrn.com/sol3/papers.cfm?abstract_id=1475725 Breakthrough Inventions and Migrating Clusters of Innovation Author:William R. Kerr Abstract We investigate the speed at which clusters of invention for a technology migrate View Details
Keywords: Martha Lagace
  • 23 Aug 2016
  • First Look

August 23, 2016

construct a spatially continuous index of pairwise-industry agglomeration and investigate the patterns and determinants underlying the global economic geography of multinational firms. In particular, we run a horserace between two... View Details
Keywords: Sean Silverthorne
  • 11 Dec 2012
  • First Look

First Look: Dec. 11

unavailable at this time. Download the paper: https://www.hbs.edu/faculty/Pages/item.aspx?num=43686 The Spatial Diffusion of Technology Authors:Comin, Diego A., Mikhail Dmitriev, and Esteban Rossi-Hansberg Abstract We empirically study technology... View Details
Keywords: Sean Silverthorne

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