Confessions of a researchaholic

2016-09-13

Paper acceptance rate

Filed under: Real — liyiwei @ 6:58 pm
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Since HKU asked for this and resumes do not usually contain failures, I reckon it could be a good idea to share my paper acceptance rate.

For SIGGRAPH (the top venue for computer graphics and interactive techniques, in case you don’t know), my life-time acceptance rate is 36%, and 40% in the last 5 years.

As a milestone of seniority, I couldn’t recall how many SIGGRAPH papers I have until doing this calculation.
🙂

I am not keeping track of my submissions to other venues (such as CHI, UIST, I3D, TVCG, EGSR, etc.), but I am pretty sure the overall rate is at least 50%, and much higher for some venues, such as EGSR (100%).

For reference, the overall acceptance rates of many graphics venues can be found under http://kesen.realtimerendering.com/.

2016-08-18

Milestone of seniority

Filed under: Real — liyiwei @ 1:09 pm
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2016-04-30

Strength in numbers

Filed under: Real — liyiwei @ 12:12 pm
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In his PhD application, a student indicated that he is collaborating with a famous professor on a recent SIGGRAPH project.

I asked that professor about the student. He told me that the project has 20 students (most are not co-authors), and the particular student is probably not even a secondary helper.

In comparison, most of my projects so far involve 0 or 1 student, and none over 2 students.
🙂

2016-04-20

User interface

Filed under: Real — liyiwei @ 8:45 pm
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When I was in grad school I thought UI is about tuning widgets and doing user studies (a lot of research did exactly that). I preferred working on algorithms because they seem more interesting and more fundamental.

Later on, I realized how wrong I was. User interface is crucial as long as humans remain biological and machines remain mechanical.
A good UI can save a not so good algorithm, but not vice versa.
And UI research can also be fun and fundamental.

2016-04-17

Hiring mistakes

Filed under: Real — liyiwei @ 6:43 pm
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Hiring PhD students is even harder than hiring employees because younger folks have more potential to grow.
And unlike an industry researcher who can let interns come and go, a university professor sticks with the students.

Two prior PhD applicants to HKU whom I passed on have turned out with outstanding performance.

One of them is still collaborating with me, so I did not regret as much. Actually, if he had not gone to another school we would not have access to some crucial hardware environment for our project, and his adviser might not have warmed back to SIGGRAPH. So I probably still made the right call.
🙂

I clearly have a lot to learn, and will have hundreds of cases to practice every year.

2016-04-12

Research coherence

Filed under: Real — liyiwei @ 7:31 pm
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One common advice on research is to have a coherent theme among our papers. I heard this from a bigwig around 2003 after getting my PhD.

This is one of these advices that I agree in principle but have violated in practice.
=D

Yes, coherence can help recognition from the community, especially when one enters a new field.

However, I am not sure if this should be intentionally aimed for. Unless you are extremely smart and versatile, you are likely end up doing related stuff without even trying.

There is this implicit force that drags us towards similar, and thus incremental, ideas. We should fight against this force, not follow it.
So, just do whatever you like. You will have more fun and more likely to produce novel stuff which, even if lacks coherence, beats being incremental.

2016-04-09

How to design talk slides

Filed under: Real — liyiwei @ 11:57 pm
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Using slides is a popular way to give presentations. I am not sure if it is the best way, but things can go very badly if done in the wrong way.

Take a look at Jim Blinn’s post about giving presentations.
Below are some quick high level suggestions. (I plan to refine this post later.)

Aim for simplicity and minimalism.

The slides are for conveying information to your audience, not serving as memo for the speaker.

Use intuitive pictures, illustrations, and animations, instead of texts and (worse) equations.

If you find yourself worrying about typography, it is a sign of too much texts.
No sentence should run over one line.

Rid of visual clutters like bullet points.

Gratuitous colors and unnecessary font variations tend to confuse people.

2016-03-27

WYSIWYG editor

Filed under: Real — liyiwei @ 11:02 am
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Some people told me that they prefer Word over Latex for paper writing due to a more direct WYSIWYG interface.

It is true that using Latex is more like coding than writing. But is Word really more WYSIWYG?

One of my PhD students, J, is interning with a top HCI lab that prefers Word. J already has first-authored multiple SIGGRAPH papers via Latex, but had difficulty figuring out how to use Word, such as citations and cross references, even after the internship mentor provided a previous paper Word file for example.

The main problem of a binary file like Word is that it shows what is there but not how it got there.
Take citations as an example. Even starting with a complete paper, there is no way to tell how to add a new citation just by looking at the file alone. One has to search online or via the in app help.

In contrast, a source file like Latex shows how everything is done, even though we have to take an extra compilation step to see what it looks like. But that can be a single command with a makefile, which also clearly shows how to build everything.

The ideal tool should allow authoring in both directions: on the source (like Latex) with outcome immediately visible (like Word), or on the outcome (like Word) with the source automatically modified.
But for now, Latex is more WYSIWYG than Word for me.

2016-03-24

Recording and sharing presentation

Filed under: Real — liyiwei @ 9:43 am
Tags: ,

Talks are usually easier to understand than the corresponding papers. To get accepted, papers need to be written in a way that look formal and rigorous, but not necessarily easy to understand. However, when authors present their (accepted) papers, they tend to cut the chase and talk straight.

In the past, people have to attend conferences for the talks.
Nowadays, everyone can easily share their talk slides online.
Better yet, record and share your presentations as videos (e.g. via PowerPoint). This can be done during practices or official presentation.
You do practice your talks, right? So why not record during your rehearsals, so that you can review now and share later.
Recording in official presentation might be trickier, e.g. the conference may prefer presenters using a shared machine and the recording might disrupt your presentation, but can be worth a try.

I have not done this for my own talks, but realized it can be a good idea after watching a few recorded talks online. I really appreciate the efforts from the authors, and plan to do so for my future talks.

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