David Andreoff Evans
Encyclopedia
David A. Evans is the president
, CEO
, and chief scientist of JustSystems Evans Research, Inc. (JSERI). He is a prominent figure in the field of computational linguistics
, best known for research on work in indexing using natural language processing
, and in ontology learning
, especially in medical informatics.
He attended Stanford University
, receiving his Ph.D. in Computational Linguistics there in 1982.
He was on the faculty of Carnegie Mellon University
from 1983 until 1996, and founded their Computational Linguistics Program and Laboratory for Computational Linguistics (1986). In 1993, his research was spun-out
from Carnegie-Mellon, as Claritech. Claritech became a research and development subsidiary of JustSystems and its name was change to Clairvoyance Corporation in 1996, before becoming JSERI in 2007.
From 1988 onwards, he developed the CLARIT system, one of the first large scale information indexing and extraction systems based on syntactic language analysis and ontology discovery. CLARIT has participated in the first Text REtrieval Conferences
(TREC), in the multilingual CLEF (Cross Language Evaluation Forum), and in the Asian NTCIR] (NII
Test Collection for IR Systems) Evaluations.
Evans was elected a Fellow of the American College of Medical Informatics
in 2000.
President
A president is a leader of an organization, company, trade union, university, or country.Etymologically, a president is one who presides, who sits in leadership...
, CEO
Chief executive officer
A chief executive officer , managing director , Executive Director for non-profit organizations, or chief executive is the highest-ranking corporate officer or administrator in charge of total management of an organization...
, and chief scientist of JustSystems Evans Research, Inc. (JSERI). He is a prominent figure in the field of computational linguistics
Computational linguistics
Computational linguistics is an interdisciplinary field dealing with the statistical or rule-based modeling of natural language from a computational perspective....
, best known for research on work in indexing using natural language processing
Natural language processing
Natural language processing is a field of computer science and linguistics concerned with the interactions between computers and human languages; it began as a branch of artificial intelligence....
, and in ontology learning
Ontology learning
Ontology learning is a subtask of information extraction. The goal of ontology learning is to semi-automatically extract relevant concepts and relations from a given corpus or other kinds of data sets to form an ontology.The automatic creation of ontologies is a task that involves many disciplines...
, especially in medical informatics.
He attended Stanford University
Stanford University
The Leland Stanford Junior University, commonly referred to as Stanford University or Stanford, is a private research university on an campus located near Palo Alto, California. It is situated in the northwestern Santa Clara Valley on the San Francisco Peninsula, approximately northwest of San...
, receiving his Ph.D. in Computational Linguistics there in 1982.
He was on the faculty of Carnegie Mellon University
Carnegie Mellon University
Carnegie Mellon University is a private research university in Pittsburgh, Pennsylvania, United States....
from 1983 until 1996, and founded their Computational Linguistics Program and Laboratory for Computational Linguistics (1986). In 1993, his research was spun-out
Research spin-off
A research spin-off is a company that falls into at least one of the four following categories:#Companies that have an equity investment from a national library or university#Companies that license technology from a public research institute or university...
from Carnegie-Mellon, as Claritech. Claritech became a research and development subsidiary of JustSystems and its name was change to Clairvoyance Corporation in 1996, before becoming JSERI in 2007.
Contributions
He has made many scholarly contributions to the field of computational linguistics and information retrieval, authoring books, many research papers and 24 US patents.From 1988 onwards, he developed the CLARIT system, one of the first large scale information indexing and extraction systems based on syntactic language analysis and ontology discovery. CLARIT has participated in the first Text REtrieval Conferences
TREC
TREC may refer to:* Techniques de Randonnée Équestre de Compétition or Trec, an equestrian discipline* Text REtrieval Conference, an on-going series of workshops co-sponsored by the National Institute of Standards and Technology and the U.S...
(TREC), in the multilingual CLEF (Cross Language Evaluation Forum), and in the Asian NTCIR] (NII
National Institute of Informatics
The is a Japanese research institute created in April 2000 for the purpose of advancing the study of informatics. This institute is also devoted to creating a system to facilitate the spread of scientific information to the general public. The NII is the only comprehensive research institute in...
Test Collection for IR Systems) Evaluations.
Evans was elected a Fellow of the American College of Medical Informatics
American College of Medical Informatics
The American College of Medical Informatics, is a college of elected fellows from the United States and abroad who have made significant and sustained contributions to the field of medical informatics...
in 2000.