Free Airport Wi-Fi? ---- Don't Count on It in Europe (Update on 08/25/2013)

Posted on: Fri, 10/26/2012 - 19:28 By: yunyao

I was traveling in Europe last week. While I enjoyed the history, culture and food very much, I was not a big fan of the airports. Like many people, I would like to stay connected most of the time, at least be able to access my emails and the Web from time to time (say every 2-3 hours). Unfortunately, passing through the following three airports in Europe is almost like returning back to stone age, in  terms of connectivities.

Fixing Problems after Upgrading from Snow Leopard to Mountain Lion

Posted on: Mon, 09/24/2012 - 01:28 By: Huahai

The IT department of my company has been urging us Mac users to upgrade OSX to Lion a long time ago. After getting a few papers submitted last week, I finally got around to upgrade the Snow Leopard for my Macbook Pro work machine. Since I couldn't find Lion on Apple Store any more, I decided to go straight to Mountain Lion. The download and installation went smoothly, and most things seemed to work after the upgrade. Here are a few things that broke and the fixes I found.

SSH with public key

Mountain Lion changed a few things that broke password-free SSH access to and from OSX using public/private key pairs.

SSH from Mountain Lion to older SSH severs:

High Resolution Image for Pdflatex

Posted on: Thu, 08/09/2012 - 21:31 By: yunyao

While preparing the camera-ready version for our CIKM demo, my colleagues and I found that the screenshot included in our paper appeared to be fairly blurry in the pdf version, even though the original .jpg file looks fine.

I searched online to try to find the solutions. After a few trials and errors, adding the following two lines into the beginning of the latex files (before \begin{document}) did the trick.

\pdfpxdimen=1in

\divide\pdfpxdimen by 300

Screen Saver Option Disabled on Windows 7/XP

Posted on: Wed, 08/01/2012 - 18:07 By: yunyao

For unknown reason, my machines would suddenly disable their screen saver options (e.g. with the "on resume, display log on screen" check box grayed out). Whenever this happens, it would trigger the security alert and I will get a warning from the IT department to fix the issue.

I am tired of having to hunting down the answer every time and therefore I am recording it here.

The following method is what usually works for me.

1. Go to "Start" type in "regedit"

2. Go to

[HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Control Panel\Desktop]

Delete the "ScreenSaverIsSecure" value.

Machine Learning That Matters

Posted on: Thu, 07/26/2012 - 22:20 By: yunyao

I happen to come across this excellent article from this year's ICML on Machine Learning that Matters. I encourage everyone, especially computer science Ph.D students, to read it.

As an industrial researcher who draws a lot of job satisfaction by making both scientific and practical impact, I completely agree with the author on that we need to work on research "that matters",  not just for machine learning. Many of the challenges outlined by the author are applicable to many other areas in computer science as well. 

Baby Cloth Shoe - First Attempt

Posted on: Fri, 06/01/2012 - 01:50 By: yunyao

As a busy computer scientist, I don't really get to exercise my inner Martha too much. But I did somehow manage to make my first ever attempt on sewing projects --- baby cloth shoes (as gift for my niece).

Here is the result --- I added the handmade pompom for extra cuteness. :)

baby cloth shoe

baby cloth shoe

The detailed steps can be found from the following link

http://www.michaelmillerfabrics.com/blog/cloth_shoe.pdf

Cat Photography with iPhone 4s

Posted on: Sat, 05/19/2012 - 02:19 By: yunyao

It has been a while since Yunyao got her iPhone 4s, which is known for its "superb" camera --- "8MP camera with all-new optics also shoots 1080p HD video". 8MP on a cell phone sounds really impressive, does it? Maybe she finally can leave her big heavy Pentax for a while?

So she tested its performance with her favoriate model: Mayori.

First, let's test it under natural light setting:

"What's up?"

Mayori

"I am sad ..."

"I am really really sad"

Count Number of Maps: First Exercises of Conceptual Mathematics in Clojure

Posted on: Wed, 05/16/2012 - 21:33 By: Huahai

As previously mentioned, I am learning category theory, beginning with Lawvere's Conceptual Mathematics book. This is a very elementry book that assumes almost nothing as a background. However, it is still a math book, which requires doing some exercises. Since the book provides no answer to exercises, I decide to make my own and post them here as I did them. Hopefully someone will find them useful.

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