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  • 2012
  • Other Unpublished Work

Lost in the Clouds: The Impact of Copyright Scope on Investment in Cloud Computing Ventures

By: Josh Lerner and Greg Rafert
Our analysis seeks to understand the impact of changes in copyright scope on investment in new firms. We begin by analyzing the investment effects of the Cartoon Network, et al. v. Cablevision decision in the U.S. and court rulings in France and Germany on venture... View Details
Keywords: Technological Innovation; Venture Capital; Internet and the Web; Investment; Business Startups; Copyright; France; Germany; United States; European Union
Related
  • July 2009
  • Article

How Is Foreign Aid Spent? Evidence from a Natural Experiment

By: Eric D. Werker, Faisal Z. Ahmed and Charles Cohen
We use oil price fluctuations to test the impact of transfers from wealthy OPEC nations to their poorer Muslim allies. The instrument identifies plausibly exogenous variation in foreign aid. We investigate how aid is spent by tracking its short-run effect on aggregate... View Details
Keywords: Foreign Aid; Money
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  • 29 Apr 2012
  • News

American Recovery?

  • 01 Nov 2019
  • News

The Particular Creativity of Dense Urban Neighborhoods

  • Research Summary

The Real Effects of Capital Controls: Financial Constraints, Exporters, and Firm Investment

By: Laura Alfaro
In aftermath of the global financial crisis of 2008–2009, emerging-market governments have increasingly restricted foreign capital inflows. The data show a statistically significant drop in cumulative abnormal returns for Brazilian firms following capital control... View Details
  • Article

Are Online and Offline Prices Similar? Evidence from Large Multi-Channel Retailers

By: Alberto Cavallo
Online prices are increasingly used for measurement and research applications, yet little is known about their relation to prices in physical stores, where most retail transactions occur. I conduct the first large-scale comparison of prices simultaneously collected... View Details
Keywords: Online Prices; Offline Prices; Multi-channel Retailers; Price; Internet and the Web; Measurement and Metrics; Retail Industry
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  • Article

Portfolio Value-at-Risk Optimization for Asymmetrically Distributed Asset Returns

By: Joel Goh, Kian Guan Lim, Melvyn Sim and Weina Zhang
We propose a new approach to portfolio optimization by separating asset return distributions into positive and negative half-spaces. The approach minimizes a newly-defined Partitioned Value-at-Risk (PVaR) risk measure by using half-space statistical information. Using... View Details
Keywords: Robust Optimization; Portfolio Management; Value-at-risk; Mathematical Methods; Finance
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  • 2009
  • Article

Adverse Selection in Online 'Trust' Certifications

By: Benjamin Edelman
Widely used online "trust" authorities issue certifications without substantial verification of recipients' actual trustworthiness. This lax approach gives rise to adverse selection: the sites that seek and obtain trust certifications are actually less trustworthy than... View Details
Keywords: Online Technology; Web Sites; Trust; Governance Compliance; Value; Complexity
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  • 08 Nov 2019
  • HBS Seminar

Galit Eizman (Research Associate, Harvard Kennedy School) (paper joint with Alice Ruichen Wang, Renmin Univ, China), Harvard Kennedy School

  • 2020
  • Working Paper

Targeting for Long-Term Outcomes

By: Jeremy Yang, Dean Eckles, Paramveer Dhillon and Sinan Aral
Decision makers often want to target interventions so as to maximize an outcome that is observed only in the long term. This typically requires delaying decisions until the outcome is observed or relying on simple short-term proxies for the long-term outcome. Here we... View Details
Keywords: Targeted Marketing; Optimization; Churn Management; Marketing; Customer Relationship Management; Policy; Learning; Outcome or Result
Related
  • 2020
  • Working Paper

Do Lenders Still Discriminate? A Robust Approach for Assessing Differences in Menus

By: David Hao Zhang and Paul Willen
We use a new methodology to assess mortgage pricing discrimination by race. We make four main contributions. First, we show that existing estimates of mortgage pricing differences by race can be confounded by a "menu problem," which is the problem associated with... View Details
Keywords: Mortgages; Financing and Loans; Prejudice and Bias; Race; Measurement and Metrics; Banking Industry; United States
Related

    The Discipline of Business Experimentation

    The data you already have can't tell you how customers will react to innovations. To discover if a truly novel concept will succeed, you must subject it to a rigorous experiment. In most companies, tests do not adhere to scientific and statistical principles. As... View Details
    • Forthcoming
    • Article

    How Important Is Editorial Gatekeeping? Evidence from Top Biomedical Journals

    By: Joshua L. Krieger, Kyle R. Myers and Ariel D. Stern
    We examine editors' influence on the scientific content of academic journals by unpacking the role of three major forces: journals' missions, aggregate supply of and demand for specific topics, and scientific homophily via editorial gatekeeping. In a sample of top... View Details
    Keywords: Editors; Biomedical Research; Editorial Gatekeeping; Scientific Homophily; Intellectual Capital; Mission and Purpose; Journals and Magazines; Intellectual Property; Innovation and Invention; Human Capital; Higher Education; Publishing Industry
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    • May 2021
    • Article

    Fifty Shades of QE: Comparing Findings of Central Bankers and Academics

    By: Brian Fabo, Marina Jančoková, Elisabeth Kempf and Ľuboš Pástor
    We compare the findings of central bank researchers and academic economists regarding the macroeconomic effects of quantitative easing (QE). We find that central bank papers find QE to be more effective than academic papers do. Central bank papers report larger effects... View Details
    Keywords: Quantitative Easing; Career Concerns; Economic Research; Central Banking; Macroeconomics; Economic Growth
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    • 2012
    • Working Paper

    Average Marginal Income Tax Rates in New Zealand, 1907-2009

    By: Debasis Bandyopadhyay, Robert J. Barro, Jeremy Couchman, Norman Gemmell, Gordon Y Liao and Fiona McAlister
    Estimates of marginal tax rates (MTRs) faced by individual economic agents, and for various aggregates of taxpayers, are important for economists testing behavioural responses to changes in those tax rates. This paper reports estimates of a number of personal marginal... View Details
    Keywords: Average Marginal Income Tax Rates; New Zealand; Taxation; New Zealand
    Related

      How Is Foreign Aid Spent?

      We use oil price fluctuations to test the impact of transfers from wealthy OPEC nations to their poorer Muslim allies. The instrument identifies plausibly exogenous variation in foreign aid. We investigate how aid is spent by tracking its short-run effect on... View Details

      • Research Summary

      Efficient Consumer Response (ECR)

      Seifert is conducting ongoing research on ECR success factor study. Identifying the relevant success factors for ECR-Implementation. Research includes analysis of supply chain mangement and category management implementiation. Statistical data is based on extensive... View Details
      • March 2022 (Revised January 2025)
      • Technical Note

      Prediction & Machine Learning

      By: Iavor I. Bojinov, Michael Parzen and Paul Hamilton
      This note provides an introduction to machine learning for an introductory data science course. The note begins with a description of supervised, unsupervised, and reinforcement learning. Then, the note provides a brief explanation of the difference between traditional... View Details
      Keywords: Machine Learning; Data Science; Learning; Analytics and Data Science; Performance Evaluation; AI and Machine Learning
      Related
      • January 2019
      • Article

      Increasing the Electoral Participation of Immigrants: Experimental Evidence from France

      By: Vincent Pons and Guillaume Liegey
      Improving the political participation of immigrants could advance their interests and foster their integration into receiving countries. In this study, 23,800 citizens were randomly assigned to receive visits from political activists during the lead-up to the 2010... View Details
      Keywords: Electoral Behavior; Immigrants; Voting; Political Elections; Behavior; France
      Related

        Entry into Platform-based Markets

        This paper examines the relative importance of platform quality, indirect network effects, and consumer expectations on the success of entrants in platform-based markets. We develop a theoretical model and find that an entrant's success depends on the strength of... View Details