Confessions of a researchaholic

April 16, 2021

Associative memory

Filed under: Real — liyiwei @ 4:12 pm
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Looking at this dithering technique today brought back memories of my previous work on blue noise sampling and the associative life, almost like traveling back in time.

April 1, 2021

Remote working

Filed under: Real — liyiwei @ 1:47 am
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Since I do not really have the notion of “work” days, I am already well set-up for remote work when the lockdown started.

March 9, 2021

Constructive versus positive feedback

Filed under: Real — liyiwei @ 10:28 am
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Positive opinions are emotionally pleasant.
Constructive opinions may not feel positive, but can propel future improvement.

Which you prefer?

March 8, 2021

Happiness, productivity, and creativity

Filed under: Real — liyiwei @ 10:40 am

Work-life balance is not really about how many hours we spend each day for work or leisure. Rather, it is doing what we really want to do, instead of being controlled by external sources, being other people or our own habits.

We tend to be more creative when we are physically and mentally healthy: sleep well, exercise enough, eat healthy food, maintain focus and presence, have a positive mood, and explore activities that might not seem to directly contribute to the current bottom line.

February 28, 2021

Straight strokes

Filed under: Real — liyiwei @ 3:55 pm
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For some mental or physical reasons, I lack control for hand strokes.
As a little kid, I was told by the school teachers that my handwriting was so bad that it will dim my future.
But that shortly became a moot point right before I started programming on computers.

A few decades later, when I started to pick up drawing, one of the first instruction books advocates practicing straight strokes before anything else, which paused my progress for years as I never have the patience for rote practice.
I later switched to another book that emphasizes natural contours, which jump-started my drawing progress.

I still cannot control hand-strokes at this moment of writing, but that doesn’t seem to matter, and I haven’t even turned on automatic stroke smoothing common in drawing applications.

Advices can help, but only combined with our own unique situations.

February 13, 2021


Filed under: Real — liyiwei @ 5:14 pm

Like others, Tom Brady’s diet and fitness routines got my attention .
I see some positive aspects of his routines, but these might not work as well for others and probably not even the real reasons for his performance.


I have cardio and weight/core training for about 1.5 hours in the morning, a walk between 0.5 to 2 hours (depending on the route and weather) in the afternoon, and 0.5 to 2 hours of coordination/control exercise in the evening.


I usually go to bed around 10:30-to-11 pm and wake up between 6-to-6:30 am, and take a 20 to 30 min nap in the early afternoon.
I guess 10:30 pm among computer scientists is probably like his 8:30 pm among the general public, and I actually need to avoid waking up too early (like 4 am when my brain got too excited).


I usually have fruit smoothie, grain/bean/seed milk, and some dairy (cheese and egg) for breakfast; vegetables, seafood, and carbohydrate (yam, sweet potatoes, bread/toast) for lunch; and vegetables, fruits, and vegetarian protein (tofu or yogurt) for dinner.
I have dark chocolate (often 100 percent cocoa) for morning snacks, hot cocoa (pure without sugar) and green tea matcha as drinks in the morning and afternoon.

I was puzzled by his denial of dairies, and found out it is not based on science.


I meditate everyday, and I probably don’t need additional brain exercises beyond my work and reading.

February 8, 2021

Vacant lot corner

Filed under: Real — liyiwei @ 4:48 am
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Drawing is one of the few activities that can soothe me into a zone/flow, like hours before a SIGGRAPH deadline (before year 2011, the start of my diminishing marginal return).

January 19, 2021

Being attentive

Filed under: Real — liyiwei @ 9:25 pm

I was reading this book chapter about a group of poker players at a game table, some closely observed every play and some just focused on their own thoughts.
The former can learn others’ habits and adapt their betting strategies, while the latter can bust out even with a mathematically good hand.

This made me realize that I could have paid more outward attention and less inward looking to the different situations I have been in, from daily conversations/meetings (too much self distractions) to international jobs/travels (too little observation these different people and places).

This also relates to a maxim of meditation, of being present, which can enhance happiness and productivity.

January 18, 2021


Filed under: Real — liyiwei @ 4:03 pm
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Tedros Adhanom Ghebreyesus said it was not fair for younger, healthy people in richer nations to get the jab before vulnerable people in poorer states.

If we continue this line of reasoning, is it fair for younger, healthy people in richer nations to receive more heath care, social welfare, etc., than vulnerable people in poorer states?
How should we define fairness across different groups of people?
Is such fairness achievable or desirable?

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