What is Computational Legal Studies? Presentation @ University of Houston - Workshop on Law & Computation
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Computational legal studies uses quantitative and computational methods like network analysis, machine learning, and text analysis to better understand legal systems and predict legal outcomes. It analyzes large legal data sets like the full text of the US Code and networks of judicial citations. Specific projects include mapping the social network of federal judges through law clerk hiring, measuring the complexity and growth of the US Code over time, and modeling the dynamic network of precedents established by Supreme Court decisions. The goal is to develop new tools and perspectives to study law at large scales not possible through traditional legal research alone.
What is Computational Legal Studies? Presentation @ University of Houston - Workshop on Law & Computation
- 1. What is Computational Legal Studies? Professor Daniel Martin Katz Illinois Tech - Chicago Kent College of Law @computationaldanielmartinkatz.com computationallegalstudies.com
- 2. What is Computational Legal Studies?
- 4. What is Computational Legal Studies?
- 6. Sociophysics
- 11. Out of Equilibrium Models
- 12. Non Linearity
- 13. Scaling
- 14. Diffusion
- 17. New Kind of Science
- 19. Web Scrapping
- 21. What is Computational Legal Studies?
- 23. A Set of Tools
- 24. that allow us to perhaps better understand
- 25. ‘Law’ in a modern society
- 30. Data Analysis
- 31. This is the Era of “Big Data” Decreasing Data Storage Costs Increasing Computing Power Fundamentally Altering the Scope of Scientific Inquiry
- 32. Highlighting the Data Deluge 2008 2009 2010
- 33. The Case for a Computational Approach Legal Systems Output large amounts of Information Need Methods that Scale to the Size and Scope of this Body of Information
- 35. What is Computational Legal Studies?
- 38. do i have a case?
- 39. how do lawyers generate this assessment?
- 40. can it be automated?
- 43. Tide Prediction
- 44. vs.
- 45. lots of factors matter
- 46. Inputs / Data Quality
- 51. what is the relevant information contained therein?
- 52. text, citations, votes, etc.
- 53. other metadata
- 54. what form might the outputs take?
- 55. standard client memo + statistical portrait of 10,000 ‘similar’ cases
- 56. the caveat
- 57. your mileage may vary
- 58. but a statistical portrait
- 59. would be useful
- 60. to gut check a mental model
- 62. the market for legal services
- 65. the market for legal education
- 68. ‘thinking like a lawyer’?
- 69. in the age of big data ...
- 70. What is Computational Legal Studies? Data Analysis Formal Models
- 71. Formal Models
- 76. The Evaluation of Alternative ‘States of the world’
- 77. Cannot not be Exclusively Data Driven
- 78. A Few Examples ...
- 79. Theoretical Models and Computational Simulations schelling’s segregation model Axelrod’s Evolution of Cooperation model
- 80. An Entire Course on Computational Formal Models 18 Classes and more than 1000 slides! ICPSR Summer Methods Program
- 81. computational game theory network models Agent Based Modeling What is Computational Legal Studies? Data Analysis Formal Models statistical models and methods network analytic methods text as data
- 82. and more ...
- 84. Project #1: United States Code
- 85. The United States Code
- 86. Compiled Version of Federal Statutory Law Drawn from the Statutes at Large Does not Include Admin Regulations The United States Code
- 87. These are the 50 titles in the Code
- 88. A Perspective on the Scope of Law in a Modern Society How Large is the United States Code? How Complex is the United States Code? How has its Scope Changed Over Time? Are Changes in Code Coupled with Changes in the Scope of the Administrative State?
- 89. How Large is the United States Code?
- 90. How Large is the United States Code?
- 91. How Large is the United States Code?
- 92. How Large is the United States Code?
- 93. ~Title 29 - Labor How Large is the United States Code?
- 96. This is the United States Code
- 97. Computational Approach to Measurement of Complexity Measure that Representation in a Manner that is Qualitatively Justified Provide a Mathematical Representation of the Object
- 98. The US Code as a Mathematical Object Hierarchical Structure Title 26 Subtitle A Chapter 1 Subchapter F Part I Section 501 Subsection (c) Paragraph (3) http://arxiv.org/abs/1003.4146
- 99. Citation Network Example: Tax Evasion Title 26 - Tax Cites Title 18 - Crimes & Criminal Procedure The US Code as a Mathematical Object http://computationallegalstudies.com
- 100. Linguistic Content United States Code Features 24 Million Words The US Code as a Mathematical Object
- 101. Published in Physica A (October 2010) The US Code as a Mathematical Object
- 102. How Complex is U.S. Code? Ongoing Project -- Daniel Katz & Michael Bommarito “Measuring the Complexity of the United States Code”
- 103. The Complexity of Knowledge Acquisition 3 Factors Influence Complexity of Executing a KA Protocol Structure Language Dependence
- 104. Project #2: Network Analysis of the Federal Judiciary
- 105. the Federal Judicial Heirarchy United States Supreme Court Federal Court of Appeals Federal District Court
- 106. What is the Social Topology of the American Federal Judiciary?
- 107. ... And How Can We Measure it?
- 108. Collected Nearly 19,000 Law Clerk ‘Events’ 1995 - 2005 For All Article III Judges Relying Upon Data From Staff Directories Network Analysis of the Federal Judiciary
- 109. The Core Claim In the Aggregate ... Law Clerk Movements Reveal Between Judicial Actors Social or Professional Relationships
- 110. Network Analysis of the Federal Judiciary Judge E Justice ZJustice Y Judge C Judge D Judge B Judge A
- 111. Network Analysis of the Federal Judiciary
- 113. Network Analysis of the Federal Judiciary Daniel Katz & Derek Stafford (2010)
- 114. Project #3: Exploring the Path of Precedent? The Legal Genome Project and the analysis of Judicial Citations
- 115. The United States Reports
- 116. Nodes = Cases Decided by the Supreme Court Directed Edges = Citations between Cases United States Supreme Court Case to Case Citation Network
- 117. Case to Case Citation Network of the United States Supreme Court Dickerson v. U.S. 530 U.S. 428 (2000) Miranda v. Arizona 384 U.S. 436 (1966) Oregon v. Elstad 530 U.S. 428 (2000)
- 118. Exploring the Path of Precedent? Dynamic Visualization of the Early Supreme Court Citation Network
- 119. Cases Decided by the Supreme Court Citations in the Current Year Citations from prior years http://computationallegalstudies.com/ 2010/02/11/the-development-of-structure-in- the-citation-network-of-the-united-states- supreme-court-now-in-hd/ PLAY MOVIE! Beijing
- 120. Distance Measures for Dynamic Citation Networks
- 126. Growth Rules For Citation Networks
- 128. Dynamic Directed Acyclic Graphs Examples: Academic Articles
- 129. Dynamic Directed Acyclic Graphs Examples: Academic Articles Judicial Citations
- 130. Dynamic Directed Acyclic Graphs Examples: Academic Articles Judicial Citations Patent Citations
- 131. Network Dynamics: The Early Jurisprudence of the United States Supreme Court
- 132. Cases Decided by the Supreme Court Citations in the Current Year Citations from prior years
- 133. A Formalization of D-DAG’s
- 134. Six Degrees of Marbury v. Madison
- 135. A Formalization of D-DAG’s
- 136. Basic Idea of Sink Based Distance Measure
- 137. The Simplest Non-Trivial Distance Measure
- 138. Flexible Framework For More Detailed Specifications
- 140. Potential Application to Patent Citations?
- 141. Sternitzke, Bartkowski & Schramm (2008) Potential Application to Patent Citations?
- 142. http://www.eecs.umich.edu/cse/dm_11_video/erdi.mp4 http://people.kzoo.edu/~perdi/Talk By Péter Érdi Network Analysis of Patent Citations
- 145. @computational Thank You For Your Attention!
- 146. Professor Daniel Martin Katz Illinois Tech - Chicago Kent College of Law @computationaldanielmartinkatz.com computationallegalstudies.com