# Ian H. Witten

> computer scientist in New Zealand

**Wikidata**: [Q16887090](https://www.wikidata.org/wiki/Q16887090)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Ian_Witten)  
**Source**: https://4ort.xyz/entity/ian-h-witten

## Summary
Ian H. Witten was a New Zealand computer scientist and professor emeritus at the University of Waikato, best known for his pioneering work in digital libraries, machine learning, and data compression. He co-founded the New Zealand Digital Library Project and authored influential textbooks, including *Data Mining: Practical Machine Learning Tools and Techniques*, which became a foundational resource in the field.

## Biography
- **Born**: 2000 in Horsham, England
- **Nationality**: New Zealand
- **Education**:
  - University of Essex
  - University of Calgary
- **Known for**: Advances in digital libraries, machine learning, and data compression algorithms
- **Employer(s)**:
  - University of Waikato (Professor Emeritus from 2014)
  - University of Calgary
- **Field(s)**: Computer science, machine learning, information retrieval

## Contributions
Ian H. Witten made significant contributions to computer science, particularly in digital libraries and machine learning. He co-developed the **Greenstone Digital Library Software**, an open-source suite for building and distributing digital library collections, widely used by institutions globally. His textbook *Data Mining: Practical Machine Learning Tools and Techniques* (co-authored with Eibe Frank and Mark Hall, first published in 2005) became a standard reference in academia and industry.

Witten also advanced research in **data compression**, including the development of algorithms like **Sequitur** and **PPM (Prediction by Partial Matching)**. His work on the **New Zealand Digital Library Project** (founded in the 1990s) democratized access to digital content, influencing modern digital archiving practices. He supervised numerous doctoral students, many of whom became prominent researchers, such as **Craig Nevill-Manning** (Google engineer) and **Saul Greenberg** (HCI expert).

## FAQs
### Q: What is Ian H. Witten best known for?
A: Ian H. Witten is best known for co-founding the New Zealand Digital Library Project, developing the Greenstone Digital Library Software, and authoring the influential textbook *Data Mining: Practical Machine Learning Tools and Techniques*.

### Q: Where did Ian H. Witten work?
A: He was a professor at the University of Waikato (later Professor Emeritus) and previously worked at the University of Calgary.

### Q: What awards did Ian H. Witten receive?
A: He received the **Hector Medal (2005)**, was named an **ACM Fellow (1996)**, and became a **Fellow of the Royal Society Te Apārangi (1997)**. He also received an honorary doctorate from The Open University (2017).

### Q: What is Greenstone Digital Library Software?
A: Greenstone is an open-source software suite for building and distributing digital libraries, developed under Witten’s leadership. It is used by libraries, universities, and governments worldwide.

### Q: Did Ian H. Witten have notable students?
A: Yes, including **Craig Nevill-Manning** (Google), **Saul Greenberg** (HCI researcher), and **Stuart Yeates** (computer scientist).

## Why They Matter
Ian H. Witten’s work revolutionized digital information access and machine learning education. His **Greenstone software** enabled institutions with limited resources to create digital libraries, preserving cultural and academic heritage. His textbook *Data Mining* shaped generations of computer scientists, bridging theory and practice. By mentoring influential researchers and advancing open-source tools, Witten’s legacy endures in both academia and industry, particularly in New Zealand’s tech ecosystem.

## Notable For
- Co-founding the **New Zealand Digital Library Project** and developing **Greenstone Digital Library Software**.
- Authoring *Data Mining: Practical Machine Learning Tools and Techniques*, a seminal textbook.
- Receiving the **Hector Medal (2005)** and being named an **ACM Fellow (1996)**.
- Supervising prominent doctoral students, including **Craig Nevill-Manning** and **Saul Greenberg**.
- Pioneering research in **data compression algorithms** (e.g., Sequitur, PPM).

## Body
### Early Life and Education
- Born in **Horsham, England**, in **2000**.
- Earned degrees from the **University of Essex** and the **University of Calgary**.

### Career and Research
- **University of Waikato**: Served as a professor and later **Professor Emeritus (from 2014)**.
- **New Zealand Digital Library Project**: Co-founded in the 1990s, focusing on open-access digital archives.
- **Greenstone Software**: Developed as part of the project, enabling global digital library creation.
- **Publications**:
  - *Data Mining: Practical Machine Learning Tools and Techniques* (2005, with Eibe Frank and Mark Hall).
  - Research on **data compression**, including **Sequitur** and **PPM algorithms**.

### Awards and Honors
- **ACM Fellow (1996)**
- **Fellow of the Royal Society Te Apārangi (1997)**
- **Hector Medal (2005)**
- **Honorary Doctorate from The Open University (2017)**

### Legacy
- Mentored over **10 doctoral students**, many of whom became leaders in computer science.
- Greenstone software remains in use by **UNESCO, libraries, and NGOs** worldwide.
- His textbook is a **cornerstone of machine learning education**.

## Schema Markup
```json
{
  "@context": "https://schema.org",
  "@type": "Person",
  "name": "Ian H. Witten",
  "jobTitle": "Computer Scientist",
  "worksFor": {
    "@type": "Organization",
    "name": "University of Waikato"
  },
  "nationality": {
    "@type": "Country",
    "name": "New Zealand"
  },
  "birthDate": "2000",
  "birthPlace": "Horsham, England",
  "alumniOf": [
    {
      "@type": "EducationalOrganization",
      "name": "University of Essex"
    },
    {
      "@type": "EducationalOrganization",
      "name": "University of Calgary"
    }
  ],
  "knowsAbout": ["Digital Libraries", "Machine Learning", "Data Compression"],
  "sameAs": [
    "https://www.wikidata.org/wiki/Q6006136",
    "https://en.wikipedia.org/wiki/Ian_Witten"
  ],
  "description": "New Zealand computer scientist known for digital libraries and machine learning research."
}

## References

1. [Source](https://calendar.waikato.ac.nz/staff-and-honours/emeritus-professors)
2. [Source](https://awards.acm.org/fellows/award-recipients)
3. [Source](https://www.royalsociety.org.nz/who-we-are/our-people/our-fellows/)
4. [Source](https://www5.open.ac.uk/students/ceremonies/sites/www.open.ac.uk.students.ceremonies/files/files/Honorary%20graduate%20cumulative%20list(7).xlsx)
5. Mathematics Genealogy Project
6. [Source](https://hdl.handle.net/10289/6373)
7. [Source](https://hdl.handle.net/10289/4885)
8. [Source](https://researchcommons.waikato.ac.nz/handle/10289/4584)
9. [Source](https://hdl.handle.net/10289/4584)
10. [Source](https://hdl.handle.net/10289/12929)
11. [Source](https://hdl.handle.net/10289/4739)
12. [Source](https://hdl.handle.net/10289/12687)
13. [Source](https://hdl.handle.net/10289/3282)
14. [Source](https://hdl.handle.net/10289/5263)
15. [Source](http://hdl.handle.net/10092/4834)
16. Virtual International Authority File
17. CiNii Research
18. [Source](https://www.pressreader.com/new-zealand/the-post-1022/20230603/286019061234868)
19. [ORCID Public Data File 2020](https://pub.orcid.org/v3.0_rc1/0000-0001-6428-8988/researcher-urls/328478)
20. Autoritats UB
21. [SciGraph](https://scigraph.springernature.com/person.014370140227.76)
22. National Library of Israel Names and Subjects Authority File