COMPUTER SCIENCE DEPT



POSTGRADUATE RESEARCH SEMINARS




WELCOME

What is a Research Degree?

According to the degree rules:

The degree of Doctor of Philosophy may be awarded by the Council on the recommendation of the Higher Degree Committee of the University College ... to a candidate who has made an original and significant contribution to knowledge

The degree of ... Master of Science by research may be awarded by the Council on the recommendation of the Higher Degree Committee of the University College ... to a candidate who has demonstrated ability to undertake research by the submission of a thesis embodying the results of an original investigation

In either case, the work is required to be original; only the PhD is required to be significant

Nevertheless, the boundaries between the two can be fuzzy

Most academics will be aware of the MSc which was 'almost' a PhD, or of the 'not quite PhD' successfully submitted as an MSc

Research vs Apprenticeship

Two approaches to research degrees:

* An opportunity for 'blue sky' research

* A research apprenticeship

The UNSW degree rules suggest:

1 -> PhD

2 -> MSc

Nevertheless, there is a consensus in the literature that

* a PhD should be primarily a research apprenticeship

* 'blue sky' research should be left to the post-doctoral period

Phillips and Pugh provide a three-fold classification of research:

* "Exploratory research .. tackling a new problem, issue, topic about which little is known, so the research idea cannot at the beginning be formulated very well ... involves pushing out the frontiers of knowledge in the hope that something useful will be discovered"

* "Testing-out research ... [tries] to find the limit of previously proposed generalisations ... to improve ... the important, but dangerous, generalisations by which our discipline develops"

* "Problem-solving research ... [starts] from a particular problem 'in the real world', and [brings] together all the intellectual resources that can ... bear on its solution. The problem has to be defined and the method of solution has to be discovered"

Perhaps before we look at Phillips and Pugh's preferred option, you might like to think about which category best fits your own project.

"We hope that you will understand why it seems very obvious to us that the appropriate route [for a PhD] is that of testing-out research ... A degree of protection in the environment is the best situation for efficient learning: being thrown in at the deep end is all very heroic, but it does tend to induce a phenomenon known as drowning!"

The Research Degree Structure

Most of the English language literature on research study is either English or American

We should consider the similarities and differences between the English and American structures and our own to assess the applicability of such advice

American System

Research masters -> largely disappeared

Full PhD program -> Dominant path

PhD follows undergraduate degree (no separate honours year)

PhD structure
* Intensive course work 18-24 months

* Dissertation proposal 6 months -> forever

* Dissertation research & writing remainder of period

Approval stages
Course work component must be passed with high honours

Detailed dissertation proposal (problem analysis, research methods, likely results) approved by dissertation committee

Dissertation approved by dissertation committee

Dissertation defended before dissertation committee (public?)

Dissertation Committee
4 - 6 people, usually mostly internal

acts in both supervisory and examining roles

Proposal as Contract
Gives rise to a view of the 'proposal as contract':

* Proposal details the work to be done

* If faithfully and competently carried out, the degree 'ought' to be awarded.

* Leads to emphasis on the importance of 'satisfying the committee' in the American literature

* The members of the examining body are known, and the research and thesis can be tailored appropriately

English System

Research masters -> ?up to date information appreciated

Full PhD program -> Dominant path

PhD follows on from an undergraduate degree (no separate honours year)

PhD structure
Intensive course work ~12 months

Thesis research & writing remainder of period

Approval stages
Course work component must be passed with honours

Thesis topic and supervisor chosen

Thesis examined by committee of examiners

Thesis orally defended before examiners (in private)

Committee of examiners:
two or three, normally at least one external and one internal to the university

In some institutions, the supervisor may be an examiner

Informed Choice
This structure is closer to ours, but still has some of the aspects of the American system:

* by the time topic and supervisor are determined, the student usually has some acquaintance with most of the academic members of the department, so informed choice is possible

* examining committee includes an internal examiner: committee will be aware of history of the research

* the oral examination process permits interactive investigation of aspects the examiners are uncertain of

* may work to advantage or disadvantage of candidate

Australian System

Research masters -> still important (particularly P/T)

Full PhD program

Research Masters or PhD follows on from an undergraduate degree with separate honours year, or (PhD) from a masters

PhD structure
Intensive course work nil

Thesis research & writing whole period

Approval stages
* Thesis topic and supervisor chosen

* Progress appraised after six months

* Thesis examined by committee of examiners

* Thesis oral normally only in case of examiner conflict

Supervision
Usually (UNSW now always) at least two supervisors
Committee of examiners:
* three, normally external, usually at least one overseas

* The supervisor is virtually never an examiner

Diffs from US/Britain
* when topic and supervisor are determined, the student often has no acquaintance with academic members of the department

* since the examining committee includes no internal examiner, the committee will be unaware of the history of the research

* there is no opportunity for interactive investigation of the research, unless the examiners disagree widely

* since the supervisor has no role in examination, there is more likelihood of a gradual passage from a student/supervisor role to an interaction of equals

* since the candidate should not know ahead of time who the examiners are, it is difficult to 'write for' the examiners

* at least some of the examiners will be unfamiliar with the system under which the candidate has worked

Research Paradigms in CS / IS

Engineering

Define a particular requirement, produce product to solve it (typically a software solution) - limited experimental validation

* system for rapid synthesis of perspective images from a moving vehicle (Tang)

* automated registration of poorly matched stereo images (Abbasi)

Experimental Science

Experimental validation of parameters within a particular problem solving approach

* investigation of impact of various parameters on genetic learning (Whigham, Darwen)

* investigation of human speech parameters (Mokhtari)

Management Science

Design of organisational methodologies for particular requirements - limited experimental validation

* methodology for comparative evaluation of military acquisitions (Sun)

Social Science

Evaluation of specific aspects of human/computer involvement; emphasis on design of experiments for statistical evaluation or on case study techniques

* ease-of-use evaluation of particular human/computer interfaces

Mathematical

Formalise a particular computing aspect (or take an existing formalisation) and prove relationships within it

* investigation of the computability of equivalence over a variety of mathematical domains of a particular abstraction of algorithm (McKay)

Humanities

Literature based; would probably have to be joint with one of the humanities departments for adequate supervision

* a comparative history of the adoption of computing technologies in Scandinavia and Australasia

* simulation models of political systems