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electrical engineer |
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law school |
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communications |
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DataRobot |
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twitter |
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my blog |
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using Keras in either R or Python |
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Outlier App |
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Applying Deep Learning to Basketball Trajectories |
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Rajistics |
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Book chapter |
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EyeingChicago.com |
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Red Light Cameras Analyzing their effectiveness in Chicago I have been studying red light cameras in Chicago since 2009. My study in 2010 was the first published study that drew doubt on the city's claim that red light cameras carried a significant safety benefit. I follow the latest events on red light cameras at my blog: EyeingChicago.com Shah, R.C. (2010). Effectiveness of Red Light Cameras in Chicago: An Exploratory Analysis. Published at EyeingChicago.com The results here mirror my earlier study. Despite the million of dollars invested in RLCs and half a billion dollars in tickets, there is no evidence that the RLCs have had a significant safety benefit. |
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NBA SportVu Exploring NBA motion data This work uses a rich set of NBA motion data (over a billion rows) for over 600 games in the 2015-2016 season. This is a wonderful dataset to analyze from a telematics or Internet of Things (IoT) perspective. Additionally, there is a wealth of theories and analytics around basketball. I created a set of notebooks that cover EDA, merging play by play data, measuring player spacing using convex hulls, calculating velocity/acceleration, and analyzing player/ball trajectories. The notebooks are based on R code (rstats)./p> |
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Spark A journey exploring Spark This work highlights my knowledge and use of spark for data science work. My github repo includes a set of notebooks with basic use of spark using scala, such as a recommender, predictive model, and outlier detection using H2O. In addition to the notebooks, I gave a talk to the Chicago spark user group on the issues around using spark for data science. |
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Divvy Bikes Chicago Divvy: A Day in the Life This project visualizes 27 Divvy bikes on July 1st, 2014 in Chicago. This small sample of Divvy bike data allowed for an impressive animation of the movement of divvy bikes through the city. This animation really shows the mobility and use of divvy bikes. This project allowed me to develop my javascript D3 animation skills. The data was found at the Divvy Bikes web site. |
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Food Inspection App An app to explore the Chicago food inspection prediction model Developed an interactive application to explore the Chicago food prediction algorithm. The app allows a users to try different models and variable combinations and guage their effect. The app was created using Rstudio's s***ny app and incorporate algorithms such as glmnet, random forests, and logistic regression. |
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Outlier Algorithms An app illustrating approaches to outlier detection The app allows you to see the trade-offs on various types of outlier / anomaly detection algorithms. Outliers are marked with a star and cluster centers with an X. The app is a s***ny app that uses a number of R packages including algorithms for kmeans, fuzzy kmeans, hierarchical clustering, dbscan, isolation forest, and an autoencoder. |
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Dangerous Roads An spatial analysis showing dangerous roads. A visualization of roads in Chicago that highlight their danger level. The visualization uses publicly available crash data and traffic volume data. This visualization was done as part of a proposed navigational app to warn people of dangerous intersections. This work was done with Aaron Moore in ArcGis and CartoDB. |
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Text Analysis Visualization Using Bokeh to visualize Word2Vec clustering. This page presents a text clustering example using 40,000 cases from the Seventh Circuit Court of Appeals. The visualization puts similar words closer together and the colors represent distinct clusters of words. I used Word2Vec with Kmeans for the clustering analysis. The results are then presented using Bokeh. This work was done in python with NLTK, Word2Vec, and Bokeh. I did this to show my skills a***ociated with unstructured data, neural networks, natural language processing, and visualization tools. |
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Tensorflow s***ny App A R/s***ny app for interactive RNN tensorflow models This project created a RStudio s***ny app for the deep learning tensorflow application. The app allows trying different inputs, RNN cell types, and even optimizers. The results are shown with plots as well as a link to tensorboard. This app allows anyone to try and play around with deep learning through a GUI interface. |
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How Software (and Architecture) Affects Users The influence of architecture generally This work stems from my early academic work studying how architecture affects behavior. I have listed the significant publications and am happy to talk about the research. The first paper looks at physical architecture (the built environment), while the second paper focuses on ways softare can be designed to influence behavior. Shah, R. C., & Kesan, J. P. (2007). How Architecture Regulates. Journal of Architectural and Planning Research, 24(4), 350-359. Shah, R. C., & Kesan, J. P. (2003). Manip****ting the Governance Characteristics of Code. Info, 5(4), 3-9. |
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Development of Software Inst**utional perspective on the development of software This work stems from my academic work studying the development of software with an emphasis on the role of several inst**utions including universities, firms, consortia, and the open source movement. I have listed the significant publications and am happy to talk about the research. For each inst**ution, the analysis examines their internal processes and norms that affect the development process. The analysis also examines how each inst**ution emphasizes different social and technical attributes that are embedded in code. Shah, R. C., & Kesan, J. P. (2009). Recipes for Cookies: How Inst**utions Shape Communication Technologies. New Media & Society, 11(3), 315-336. Shah, R. C., & Kesan, J. P. (2005). Nurturing Software: How Societal Inst**utions Shape the Development of Software. Communications of the ACM, 40(9), 80-85. Kesan, J. P., & Shah, R. C. (2004). Deconstructing Code. Yale Journal of Law & Technology, 6, 277-389. Shah, R. C., & Kesan, J. P. (2003). Incorporating Societal Concerns into Communication Technologies. IEEE Technology and Society Magazine, 22(2), 28-33. |
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How Government Can Shape Software Strategies government can use to influence software This detailed paper shows the many ways government can influence the development of software/code. The methods include using the government’s regulatory power, fiscal power, and the ability to influence intellectual property rights. Kesan, J. P., & Shah, R. C. (2005). Shaping Code. Harvard Journal of Law & Technology, 18(2), 319-399. |
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History of the Internet Tracing the privatization of the Internet The Internet's origins date back to the 1960s with government funded research into computer networks. This work traces the history and implications of s***fting control over the Internet to the private sector, a process called privatization. Shah, R. C., & Kesan, J. P. (2007). The Privatization of the Internet's Backbone Network. Journal of Broadcasting and Electronic Media, 51(1), 93-109. Kesan, J. P., & Shah, R. C. (2001). Fool Us Once Shame on You - Fool Us Twice Shame on Us: What We Can Learn from the Privatizations of the Internet Backbone Network and the Domain Name System. Was***ngton University Law Quarterly, 79(1), 89-220. |
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Potholes A short analysis and visualization on Chicago's efforts to fix 250,000 potholes in the last few years. This page provides a some insights into the 250,000 potholes from 311 requests filled in the last few years by Chicago. The project allowed me to use a variety of tools including htmlwidgets and torque on cartodb for a dynamic time series mapping visualization. The project begins with a chart showing how many days it takes the city to fill a pothole. The vast majority are filled in less than a week after they have been reported. Under fixed potholes, is a chart showing how many potholes the city has fixed on every day for the last few years. There is a clear seasonality to when potholes are fixed. Finally, under movie, there is an animation on a map showing when and where potholes are reported and fixed. |
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Case Studies Apache, Cookies, Finger, NCSA Mosaic, and PICS A set of technological case studies used in my research. Some of the criteria in choosing these cases included representing a variety of inst**utional origins (.e.g, universities, open source . . .) and affecting significant policy issues. Apache: The development of Apache by the open source movement. Apache is the most widely used web server. Cookies: Netscape's incorporation of the cookies technology into their web browser. Cookies are a technology that allows web sites to gather information about their visitors. Finger: The development of the finger command, which reveals information about people on a computer network. NCSA Mosaic: The development of the first pop****r web browser, NCSA (National Center for Supercomputing Applications) Mosaic, within a university. PICS: The development of the Platform for Internet Content Selection (PICS) by the World Wide Web Consortium. PICS is a standard for labeling web pages for the purpose of limiting access to inappropriate material by minors. |
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Blog |
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YouTube |
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