https://julianstreyczek.github.io/projects/

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3 </head> <body class="fixed-top-nav sticky-bottom-footer"> <header> <nav id="navbar" class="navbar navbar-light navbar-expand-sm fixed-top" role="navigation"> <div class="container"> <a class="navbar-brand title font-weight-lighter" href="/"> <span class="font-weight-bold">Julian</span> Streyczek </a> <button class="navbar-toggler collapsed ml-auto" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation"> <span class="sr-only">Toggle navigation</span> <span class="icon-bar top-bar"></span> <span class="icon-bar middle-bar"></span> <span class="icon-bar bottom-bar"></span> </button> <div class="collapse navbar-collapse text-right" id="navbarNav"> <ul class="navbar-nav ml-auto flex-nowrap"> <li class="nav-item "> <a class="nav-link" href="/">About </a> </li> <li id="show-research" class="nav-item "> <a class="nav-link" href="/research/"> Research </a> </li> <li id="show-projects" class="nav-item active"> <a class="nav-link" href="/projects/"> Projects </a> </li> <li id="show-cv" class="nav-item"> <a class="nav-link" target="_blank" href="/assets/pdf/cv_julian_streyczek.pdf"> CV </a> </li> <li class="nav-item"> <button id="search-toggle" title="Search" onclick="openSearchModal()"> <span class="nav-link">ctrl k <i class="ti ti-search"></i></span> </button> </li> <li class="toggle-container"> <button id="light-toggle" title="Change theme"> <i class="ti ti-sun-moon" id="light-toggle-system"></i> <i class="ti ti-moon-filled" id="light-toggle-dark"></i> <i class="ti ti-sun-filled" id="light-toggle-light"></i> </button> </li> </ul> </div> </div> </nav> </header> <div class="container mt-5" role="main"> <div class="post"> <header class="post-header"> <h1 class="post-title">Other projects</h1> <p class="post-description"></p> </header> <article> <div class="projects"> <div class="row row-cols-1 row-cols-md-3"> <div class="col"> <a href="/blog/2026/data-driven-incentive-design/"> <div class="card h-100 hoverable"> <figure> <picture> <source class="responsive-img-srcset" srcset="/assets/img/2026-06-12-data-driven-incentive-design/05_adjusted_trip_supply-480.webp 480w,/assets/img/2026-06-12-data-driven-incentive-design/05_adjusted_trip_supply-800.webp 800w,/assets/img/2026-06-12-data-driven-incentive-design/05_adjusted_trip_supply-1400.webp 1400w," type="image/webp" sizes="250px"></source> <img src="/assets/img/2026-06-12-data-driven-incentive-design/05_adjusted_trip_supply.png" class="card-img-top" width="100%" height="auto" alt="project thumbnail" loading="eager" onerror="this.onerror=null; $('.responsive-img-srcset').remove();"> </picture> </figure> <div class="card-body"> <h4 class="card-title">Data-Driven Incentive Design</h4> <p class="card-text">Public-data case study combining causal supply elasticity estimation with tiered incentive optimization.</p> <div class="row ml-1 mr-1 p-0"> <div class="github-icon"> <div class="icon" data-toggle="tooltip" title="Code Repository"> <a href="https://github.com/JulianStreyczek/data-driven-incentive-design" rel="external nofollow noopener" target="_blank"><i class="fa-brands fa-github gh-icon"></i></a> </div> </div> </div> </div> </div> </a> </div> <div class="col"> <a href="https://julianstreyczek.github.io/blog/2022/causal-forests-guide" rel="external nofollow noopener" target="_blank"> <div class="card h-100 hoverable"> <figure> <picture> <source class="responsive-img-srcset" srcset="/assets/img/causalforests_header.PNG" sizes="250px"></source> <img src="/assets/img/causalforests_header.PNG" class="card-img-top" width="100%" height="auto" alt="project thumbnail" loading="eager" onerror="this.onerror=null; $('.responsive-img-srcset').remove();"> </picture> </figure> <div class="card-body"> <h4 class="card-title">The Economist's Guide to Causal Forests</h4> <p class="card-text">Introduction to the econometric foundations of Causal Forests</p> <div class="row ml-1 mr-1 p-0"> <div class="github-icon"> <div class="icon" data-toggle="tooltip" title="Code Repository"> <a href="https://github.com/JulianStreyczek/causal-forests-guide" rel="external nofollow noopener" target="_blank"><i class="fa-brands fa-github gh-icon"></i></a> </div> </div> </div> </div> </div> </a> </div> <div class="col"> <a href="https://github.com/JulianStreyczek/Machine-Learning-in-Economic-Research" rel="external nofollow noopener" target="_blank"> <div class="card h-100 hoverable"> <figure> <picture> <source class="responsive-img-srcset" srcset="/assets/img/ml_in_economic_research-480.webp 480w,/assets/img/ml_in_economic_research-800.webp 800w,/assets/img/ml_in_economic_research-1400.webp 1400w," type="image/webp" sizes="250px"></source> <img src="/assets/img/ml_in_economic_research.png" class="card-img-top" width="100%" height="auto" alt="project thumbnail" loading="eager" onerror="this.onerror=null; $('.responsive-img-srcset').remove();"> </picture> </figure> <div class="card-body"> <h4 class="card-title">Machine Learning in Economic Research</h4> <p class="card-text">Slides from an undergraduate mini-course on how machine learning and rich data can answer real-world policy questions.</p> <div class="row ml-1 mr-1 p-0"> <div class="github-icon"> <div class="icon" data-toggle="tooltip" title="Code Repository"> <a href="https://github.com/JulianStreyczek/Machine-Learning-in-Economic-Research" rel="external nofollow noopener" target="_blank"><i class="fa-brands fa-github gh-icon"></i></a> </div> </div> </div> </div> </div> </a> </div> <div class="col"> <a href="https://github.com/JulianStreyczek/HammerScalpel.jl" rel="external nofollow noopener" target="_blank"> <div class="card h-100 hoverable"> <figure> <picture> <source class="responsive-img-srcset" srcset="/assets/img/hammerscalpel_header-480.webp 480w,/assets/img/hammerscalpel_header-800.webp 800w,/assets/img/hammerscalpel_header-1400.webp 1400w," type="image/webp" sizes="250px"></source> <img src="/assets/img/hammerscalpel_header.png" class="card-img-top" width="100%" height="auto" alt="project thumbnail" loading="eager" onerror="this.onerror=null; $('.responsive-img-srcset').remove();"> </picture> </figure> <div class="card-body"> <h4 class="card-title">The Hammer and the Scalpel</h4> <p class="card-text">Simulations of social and economic impacts of pandemic lockdown policies. Julia Replication of Chari, Kirpalani, and Phelan (2021)</p> <div class="row ml-1 mr-1 p-0"> <div class="github-icon"> <div class="icon" data-toggle="tooltip" title="Code Repository"> <a href="https://github.com/JulianStreyczek/HammerScalpel.jl" rel="external nofollow noopener" target="_blank"><i class="fa-brands fa-github gh-icon"></i></a> </div> </div> </div> </div> </div> </a> </div> <div class="col"> <a href="../assets/pdf/rdlasso.pdf"> <div class="card h-100 hoverable"> <figure> <picture> <source class="responsive-img-srcset" srcset="/assets/img/rdlasso_header.PNG" sizes="250px"></source> <img src="/assets/img/rdlasso_header.PNG" class="card-img-top" width="100%" height="auto" alt="project thumbnail" loading="eager" onerror="this.onerror=null; $('.responsive-img-srcset').remove();"> </picture> </figure> <div class="card-body"> <h4 class="card-title">Regression Discontinuity with Lasso-selected Covariates</h4> <p class="card-text">I developed and tested a method to select covariates for RD designs (master thesis).</p> <div class="row ml-1 mr-1 p-0"> </div> </div> </div> </a> </div> <div class="col"> <a href="https://github.com/JulianStreyczek/Scrape-Ballotpedia-US-State-Legislative-

3Majorities" rel="external nofollow noopener" target="_blank"> <div class="card h-100 hoverable"> <div class="card-body"> <h4 class="card-title">Ballotpedia State Legislature Scraper</h4> <p class="card-text">R scraper for historical party-composition data in U.S. state legislative chambers from Ballotpedia.</p> <div class="row ml-1 mr-1 p-0"> <div class="github-icon"> <div class="icon" data-toggle="tooltip" title="Code Repository"> <a href="https://github.com/JulianStreyczek/Scrape-Ballotpedia-US-State-Legislative-Majorities" rel="external nofollow noopener" target="_blank"><i class="fa-brands fa-github gh-icon"></i></a> </div> </div> </div> </div> </div> </a> </div> </div> </div> </article> </div> </div> <footer class="sticky-bottom mt-5" role="contentinfo"> <div class="container"> © Copyright 2026 Julian Streyczek. Powered by <a href="http://jekyllrb.com/" target="_blank" rel="external nofollow noopener">Jekyll</a> with <a href="https://github.com/alshedivat/al-folio" rel="external nofollow noopener" target="_blank">al-folio</a> theme. Hosted by <a href="https://pages.github.com/" target="_blank" rel="external nofollow noopener">GitHub Pages</a>. </div> </footer> 

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