PeopleofSuperintelligence

Researcher

Chih-Chung Chang

Also known as 張治中

Chih-Chung Chang is a researcher in support vector machines and a coauthor of the LIBSVM software library, whose version 3.37 appeared in 2025. He earned a master's degree in Chih-Jen Lin's group at National Taiwan University in June 2001. His papers analyzed SVM decomposition, proposed a method for ν-SVM classification, and covered ν-support vector regression. The NTU group behind LIBSVM won two events in the 2001 IJCNN Challenge. As of October 2026, he works at Google Taiwan.

Now at
Google Taiwan
Works
13
Citations
46,880
h-index
9
Badges

Publication numbers from OpenAlex, as of 19 October 2026.

Timeline

  1. 2000

    Proving SVM convergence

    He, Chih-Wei Hsu, and Chih-Jen Lin connect support vector machine decomposition methods to projected gradient methods and prove convergence for a version of the method in 2000.

  2. June 2001

    A master's at NTU

    He completes a master's degree in Chih-Jen Lin's group at National Taiwan University in June 2001.

  3. 2001

    ν-SVM and IJCNN Challenge

    He and Lin propose a decomposition method for ν-SVM classification in a 2001 paper. The NTU group behind LIBSVM wins two of three events in the 2001 IJCNN Challenge.

  4. 2002

    Training ν-SVR

    He and Lin publish a Neural Computation article on training ν-support vector regression in 2002.

  5. 2011

    Google Taiwan and LIBSVM

    By February 2011, he works as a Google Taiwan employee and redirects hiybbprqag.com to the Google Jobs page. He and Lin coauthor a 2011 article on LIBSVM, a library for support vector machines.

  6. December 2025

    LIBSVM version 3.37

    The LIBSVM project releases version 3.37 in December 2025, with updated wheel-building settings and minor fixes to the Python interface.

  7. As of October 2026

    At Google Taiwan

    As of October 2026, he works at Google Taiwan.

Career

  1. Since 2011Google Taiwan
  2. 2008–2011National Taiwan University

Education

  1. 2001National Taiwan UniversityMaster's degree

From the biography and OpenAlex affiliations (the years of papers that list the organization), so some years are approximate.

Most-cited works

  1. LIBSVM2011 · ACM Transactions on Intelligent Systems and Technology · 40,892 citationsWith Chih-Jen Lin
  2. A Practical Guide to Support Vector Classication2008 · 5,016 citationsWith Chih-Jen Lin
  3. Training v-Support Vector Classifiers: Theory and Algorithms2001 · Neural Computation · 499 citationsWith Chih-Jen Lin
  4. Training v-Support Vector Regression: Theory and Algorithms2002 · Neural Computation · 316 citationsWith Chih-Jen Lin
  5. Equilibrium fluctuations of asymmetric simple exclusion processes in dimension d≥32001 · Probability Theory and Related Fields · 41 citations

From OpenAlex, as of 19 October 2026.

  1. More people shaping AI studied at Massachusetts Institute of Technology than at any other institutionIncludes National Taiwan University. Our estimates of where the people shaping AI studied and where their careers led, from education records in cited biographies.
  2. The company share of AI researchers’ top papers rose from 2% to 32%Includes National Taiwan University. We estimate where leading AI researchers worked when their most-cited papers appeared. The company share rose from 2% in 1975–1979 to 32% in 2020–2024.
  3. Google had the most people shaping AI every year from 2014 to 2025Our estimates of which organizations employed the most people shaping AI from 1961 to 2025, with a year-by-year chart.
  4. The United States employs an estimated 53% of people in our data with a known employment countryOur estimates of where AI careers are concentrated now and how countries’ shares of dated positions changed over time.

Colleagues

People named in this biography, and people with dated positions at the same organization in the same years.

Sources and credits

Photo: We have no published photo of Chih-Chung Chang yet. Send us a free-licensed photo.

  1. The analysis of decomposition methods for support vector machines — Lacuna lacuna.tiptreesystems.com. Checked 19 October 2026.
  2. Chih-Jen Lin's students csie.ntu.edu.tw. Checked 19 October 2026.
  3. Training Nu-Support Vector Classifiers: Theory and Algorithms | ML Anthology mlanthology.org. Checked 19 October 2026.
  4. LIBSVM -- A Library for Support Vector Machines csie.ntu.edu.tw. Checked 19 October 2026.
  5. Chih-Chung Chang csauthors.net. Checked 19 October 2026.
  6. Google Employee Redirects Hiybbprqag.com To Google Jobs Page | TechCrunch techcrunch.com. Checked 19 October 2026.
  7. LIBSVM FAQ csie.ntu.edu.tw. Checked 19 October 2026.