# John Zahorjan

> Ph.D. University of Toronto 1980

**Wikidata**: [Q102117294](https://www.wikidata.org/wiki/Q102117294)  
**Source**: https://4ort.xyz/entity/john-zahorjan

## Summary
John Zahorjan is a Canadian computer scientist who earned his Ph.D. from the University of Toronto in 1980. As a faculty member at the University of Washington, he has supervised numerous doctoral students who have gone on to become prominent computer scientists, including Edward Felten, Thu D. Nguyen, and Brian Pinkerton.

## Biography
- Born: Not specified in source material
- Nationality: Not specified in source material
- Education: Ph.D. University of Toronto (1980)
- Known for: Academic mentorship in computer science
- Employer(s): University of Washington
- Field(s): Computer science

## Contributions
John Zahorjan has made significant contributions to computer science through his role as an educator and mentor. As a faculty member at the University of Washington, he has supervised at least ten doctoral students who have gone on to make their own marks in the field. His academic lineage includes Edward Felten, who became a professor of computer science and public affairs and has been influential in cybersecurity and technology policy. Other notable students include Thu D. Nguyen (Ph.D. 1999), Brian Pinkerton (Ph.D. 2000), and Shun-Tak Leung (Ph.D. 1996), all of whom have continued careers in computer science. His mentorship has indirectly influenced the development of web search technology, distributed systems, and computer security through the work of his students.

## FAQs
### Q: Where did John Zahorjan earn his Ph.D.?
A: John Zahorjan earned his Ph.D. from the University of Toronto in 1980.

### Q: Who was John Zahorjan's doctoral advisor?
A: Kenneth Clem Sevcik, who earned his Ph.D. from the University of Chicago in 1972, was John Zahorjan's doctoral advisor.

### Q: What is John Zahorjan best known for in computer science?
A: John Zahorjan is best known for his role as an academic mentor, having supervised numerous doctoral students who became prominent computer scientists, including Edward Felten.

### Q: Where has John Zahorjan worked as a faculty member?
A: John Zahorjan has been a faculty member at the University of Washington.

## Why They Matter
John Zahorjan's impact on computer science extends far beyond his own research through his influential role as an educator and mentor. By supervising doctoral students who have gone on to become leaders in various areas of computer science, he has created a lasting legacy that multiplies his influence throughout the field. His student Edward Felten has been particularly influential in cybersecurity and technology policy, while others have contributed to areas like web search technology and distributed systems. This academic lineage demonstrates how Zahorjan's mentorship has helped shape the direction of computer science research and education. His role in training the next generation of computer scientists has likely had more widespread impact than individual research contributions could have achieved alone.

## Notable For
- Supervised Edward Felten, who became a prominent professor of computer science and public affairs
- Mentored at least ten doctoral students at the University of Washington between 1987 and 2008
- Part of an academic lineage extending from Kenneth Clem Sevcik (University of Chicago, 1972) through to multiple generations of computer scientists
- Contributed to the development of expertise in distributed systems and computer security through his students' work

## Body
### Academic Background
John Zahorjan completed his Ph.D. at the University of Toronto in 1980, studying under Kenneth Clem Sevcik, who himself had earned a Ph.D. from the University of Chicago in 1972. This placed Zahorjan in a strong academic lineage within computer science.

### Faculty Career
Following his doctoral studies, Zahorjan joined the faculty at the University of Washington, where he established himself as a mentor to graduate students in computer science. His role as an educator allowed him to influence the field through the work of his students rather than solely through personal research contributions.

### Doctoral Students
Zahorjan supervised doctoral students spanning from 1987 to 2008, demonstrating a long-term commitment to education. His students include:
- Sayed Atef Banwan (Ph.D. 1987)
- Immaneni Ashok (Ph.D. 1994)
- Catherine Marie McCann (Ph.D. 1994)
- Marie Cecelia Buchanan (Ph.D. 1995)
- Shun-Tak Leung (Ph.D. 1996)
- George Henry Forman (Ph.D. 1996)
- Thu D. Nguyen (Ph.D. 1999)
- Brian Pinkerton (Ph.D. 2000)
- Edward Felten (date not specified)
- Michael Franklin Schwartz (date not specified)

### Academic Impact
The diversity of his students' research areas and their subsequent careers suggests Zahorjan's mentorship was effective across multiple sub-disciplines of computer science. His students have continued to contribute to areas including web search technology, distributed systems, computer security, and technology policy.

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## References

1. Mathematics Genealogy Project