CLOSE
Original image

At the Libraries: More Bookish Tattoos

Original image

Every Wednesday, Miss Kathleen provides links to a variety of stories about libraries, authors, and books. If there's something fun going on in your local library, leave us a comment!

Wow, you guys really responded to last week's links about literary tattoos! Reader Melissa sent in some pics of her own.
*
Someone else sent me this great blog: a compendium of literary tattoos! Lots of great stuff to look at, and maybe some inspiration for your own literary tattoo? I myself don't have one, but perhaps someday...
*
We have a couple of cool libraries to feature this week! First, one in New York, that you can only access through the subway. A commuter's dream! As long as it's on your route, I suppose.

*
And next, a vision of the future? An express library, with no librarians, no chairs, and hardly any books! Just boxes where pre-ordered books are waiting for you -- kind of like Amazon. Not everyone's into it, but what do you think? Would you use it?
*
No matter how you design it, people really need libraries, especially now. The Economist has published one librarian's take on the rise in computer use at libraries.
*
I know we have a lot of librarian readers out there -- here's a little game I found to test your Dewey knowledge! It was kind of easy for me, but if you work in an LC library, it could be tricky. Or, if you aren't a librarian at all. Take it and let me know how you do!
*
There's a pretty cool event coming up at the Calvert (MD) Library tomorrow: Thinning the Veil. It's meant to be a spooky story open mic night, and costumes are definitely encouraged!
*
And speaking of Halloween costumes, ewww! That's all I have to say about that.
*
I love the New York Times Magazine column, The Ethicist, and I'm surprised at how frequently library issues come up. Here's another one (it's the second question), from a community college librarian: when students ask for help using a computer, should he also point out spelling errors? I myself never do, no matter how egregious. I just don't consider that my role. What do you think?
*
For your budding readers, and future librarians? Check out this personal library kit, just for kids! After all, Christmas is only two months away.
*
But for your personal librarian (me!), here's what I want for Christmas: this take on the Mr. Men and Little Miss books, but based on Mad Men. Check them out.


If you follow a great library blog, site, or twitterer, please share it with me! Hit me at atthelibraries@gmail.com or leave me a comment. See previous installments of At the Libraries here.

Original image
iStock // Ekaterina Minaeva
technology
arrow
Man Buys Two Metric Tons of LEGO Bricks; Sorts Them Via Machine Learning
May 21, 2017
Original image
iStock // Ekaterina Minaeva

Jacques Mattheij made a small, but awesome, mistake. He went on eBay one evening and bid on a bunch of bulk LEGO brick auctions, then went to sleep. Upon waking, he discovered that he was the high bidder on many, and was now the proud owner of two tons of LEGO bricks. (This is about 4400 pounds.) He wrote, "[L]esson 1: if you win almost all bids you are bidding too high."

Mattheij had noticed that bulk, unsorted bricks sell for something like €10/kilogram, whereas sets are roughly €40/kg and rare parts go for up to €100/kg. Much of the value of the bricks is in their sorting. If he could reduce the entropy of these bins of unsorted bricks, he could make a tidy profit. While many people do this work by hand, the problem is enormous—just the kind of challenge for a computer. Mattheij writes:

There are 38000+ shapes and there are 100+ possible shades of color (you can roughly tell how old someone is by asking them what lego colors they remember from their youth).

In the following months, Mattheij built a proof-of-concept sorting system using, of course, LEGO. He broke the problem down into a series of sub-problems (including "feeding LEGO reliably from a hopper is surprisingly hard," one of those facts of nature that will stymie even the best system design). After tinkering with the prototype at length, he expanded the system to a surprisingly complex system of conveyer belts (powered by a home treadmill), various pieces of cabinetry, and "copious quantities of crazy glue."

Here's a video showing the current system running at low speed:

The key part of the system was running the bricks past a camera paired with a computer running a neural net-based image classifier. That allows the computer (when sufficiently trained on brick images) to recognize bricks and thus categorize them by color, shape, or other parameters. Remember that as bricks pass by, they can be in any orientation, can be dirty, can even be stuck to other pieces. So having a flexible software system is key to recognizing—in a fraction of a second—what a given brick is, in order to sort it out. When a match is found, a jet of compressed air pops the piece off the conveyer belt and into a waiting bin.

After much experimentation, Mattheij rewrote the software (several times in fact) to accomplish a variety of basic tasks. At its core, the system takes images from a webcam and feeds them to a neural network to do the classification. Of course, the neural net needs to be "trained" by showing it lots of images, and telling it what those images represent. Mattheij's breakthrough was allowing the machine to effectively train itself, with guidance: Running pieces through allows the system to take its own photos, make a guess, and build on that guess. As long as Mattheij corrects the incorrect guesses, he ends up with a decent (and self-reinforcing) corpus of training data. As the machine continues running, it can rack up more training, allowing it to recognize a broad variety of pieces on the fly.

Here's another video, focusing on how the pieces move on conveyer belts (running at slow speed so puny humans can follow). You can also see the air jets in action:

In an email interview, Mattheij told Mental Floss that the system currently sorts LEGO bricks into more than 50 categories. It can also be run in a color-sorting mode to bin the parts across 12 color groups. (Thus at present you'd likely do a two-pass sort on the bricks: once for shape, then a separate pass for color.) He continues to refine the system, with a focus on making its recognition abilities faster. At some point down the line, he plans to make the software portion open source. You're on your own as far as building conveyer belts, bins, and so forth.

Check out Mattheij's writeup in two parts for more information. It starts with an overview of the story, followed up with a deep dive on the software. He's also tweeting about the project (among other things). And if you look around a bit, you'll find bulk LEGO brick auctions online—it's definitely a thing!

Original image
Opening Ceremony
fun
arrow
These $425 Jeans Can Turn Into Jorts
May 19, 2017
Original image
Opening Ceremony

Modular clothing used to consist of something simple, like a reversible jacket. Today, it’s a $425 pair of detachable jeans.

Apparel retailer Opening Ceremony recently debuted a pair of “2 in 1 Y/Project” trousers that look fairly peculiar. The legs are held to the crotch by a pair of loops, creating a disjointed C-3PO effect. Undo the loops and you can now remove the legs entirely, leaving a pair of jean shorts in their wake. The result goes from this:

501069-OpeningCeremony2.jpg

Opening Ceremony

To this:

501069-OpeningCeremony3.jpg

Opening Ceremony

The company also offers a slightly different cut with button tabs in black for $460. If these aren’t audacious enough for you, the Y/Project line includes jumpsuits with removable legs and garter-equipped jeans.

[h/t Mashable]

SECTIONS
BIG QUESTIONS
BIG QUESTIONS
JOB SECRETS
QUIZZES
WORLD WAR 1
SMART SHOPPING
STONES, BONES, & WRECKS
#TBT
THE PRESIDENTS
WORDS
RETROBITUARIES