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Our Readers' Favorite Halloween Costumes

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All fall, you guys have been filling up our inbox with your best Halloween photos. Get in the holiday spirit by looking at some of our favorite submissions. Apologies for all the pagination—we don't typically do that, but we also don't typically stick 60 photos in a post. Enjoy!

Olivia sent in this picture of herself dressed as a ninja. No word on the identity or whereabouts of the hostage beside her.

trek

Brian, Abby & Hannah Segool, circa 1993. (From Abby: "My parents started me on the road to nerd-dom early in life.")

polar-bear

Marion Germaine sent in this photo of her daughter as a cute little polar bear. A cute little polar bear feasting on the flesh of a bloody severed leg.

ding-bat

Here's one from the 1970s. Scarlett Messenger is dressed as a bat, and her shirt reads "DING" in big red letters. "Yes, I went to school dressed as a Ding Bat. I don't think the scars have healed yet."

FourCostumes

Elizabeth-Anne Cobb sets the bar pretty high for people who make their costume out of a box each year.

lovegood

We've all seen Harry Potter, Severus Snape and Cho Chang costumes, but Angela Kerchner's family waded deeper into the canon—here's her husband and daughter as Xenophilis and Luna Lovegood.

myrtle

Angela's other daughter played a convincing Moaning Myrtle.

buddy-elf

The rules for Christopher Schwarz's costumes are as follows: "1) A good amount of people must know who I am right away. 2) When I go to Halloween parties, no one else should be dressed the same way." (You'll hear from him again.)

soap

Jade Thompson and her boyfriend cleaned up at costume contests last year.

nathan-jackson

Nathan Jackson as...Nathan Jackson! (Apologies to the rest of you who submitted photos of your Nathan Jackson costumes. Only had room for one.)

frida-fish

Anneke Majors has pulled off both Frida Kahlo and a jellyfish.

birds

Anneke also sent in this photo of her friend Abby as Tippi Hedren (from The Birds).

bob-ross

Jake Meek said his Bob Ross attire was purchased in the ladies department at a local thrift store, "which I can only assume is where all men's clothing from the '70s currently resides." He's posing with the Orbit Gum Lady. Advertising characters are always a popular choice. Let's run through a bunch of mascots...

hamb-sunmaid

Here are the same two, this time as The Hamburgler and the woman on the Sunmaid Raisins box.

toucan-sam

One of my favorites—Allison Brooks as Toucan Sam!

burger-king

Tricia Williamson's husband creeped people out as The King. ("He went around all night offering a burger to people and showing up in the window. 4 years later people are still talking about it.")

col-sanders

Not sure why, but I was very happy to see someone dressed as Colonel Sanders. Well played, Liz Somes.

mr-clean

Patrick & Amanda McCullough as Mr. Clean & Mrs. Dirty.

hamburgler-2

Here's Christopher Schwarz again, this time as The Hamburgler.

gnome

Megan as the Travelocity Roaming Gnome, along with a salt shaker (Mariah) and a "cereal killer" (Anna Frick -- "that's why cereal is glued to my shirt and spoons are attached to my gloves.")

Who wants to see some superheros and villains?

captain-america

Lots of superhero costumes. Rebekah Davies sent in this photo of her co-worker Michael as Captain America. ("He made it from scratch, including sewing the shield from individual pleather tiles he cut out...hundreds of them.")

highlighter-girl

Heidi Hurst is Highlighter Girl! (Superpower: "I brighten your day!")

wonder-woman

Melissa Shumate as Wonder Woman (with a Burger King crown for good measure).

dr-o

Rachel Moore as Doctor Horrible!

two-face

Christopher Schwarz makes his third and final appearance on our list, this time as Two-Face.

optimus-vance

It's Optimus Vance Rutherford!

pinhead

Nathan Stewart gives away his how-to-be-Pinhead-from-Hellraiser secret: "I used liquid latex to cover my entire head, then painted toothpicks silver for the nails. A little dab of latex on the end of the toothpicks and they stuck without any problems. I even made my own Lament Configuration out of a block of wood."

tooth-fairy

Is the Tooth Fairy a hero? Kevin Kroll put an intimidating spin on the role.

american-gothic

Kerry Ruscitti and her husband went the American Gothic route.

nerds

I'm sure Joanne Christensen's kids are thrilled she sent in this photo from Halloween '98.

peacock

Regina Ruopoli and her elaborate, hand-made peacock costume.

princess

Dressed as Super Princess Peach, Stefa Nunes ran into a couple of Mario Brothers.

mario-bros

Gino and his boyfriend pulled off a convincing Mario & Luigi, too.

vikings

Last year, Chelsea Glaze and her boyfriend "decided to be vikings because vikings are just awesome."

palins

Not as many political costumes as I expected. Here are Melanie and Sarah as Bristol and Sarah Palin.

SC

Linda McGee as "What the Well-Dressed Lady in Pacolet (SC) Is Wearing This Year."

tigger

Connor in CA bounced from house to house as Tigger.

cat-pirate

Missa Haas says her cat, Sunny, is wild about Halloween. Sunny is also terrifying.

PegBundy

Laura Gryder sent in this star-powered photo: Peg Bundy, Nathan Explosion of Dethklok, and Richard Simmons.

bee

Keegan Greenier explains: "Pillow stuffed in front. Black tights. Giant, yellow-rimmed sunglasses. Long live the '80s."

waldo-2

From Laurier Nicas: "I really loved Waldo growing up. Proof? Halloween 1991, Age 6. What this photo doesn't prove is that I am actually a girl."

waldo

Said Dominique Grant of her Waldo: "This was the best costume for getting in the background of other people's pictures."

legolas

Cindy Allen sent us these photos of her son as Legolas from The Lord of the Rings.

wired-hat

While they're not in costume, I had to include this photo of Ed and Heidi. I can respect a gourd hat that requires wiring.

martha

Nicole Nasuti as Prison Martha, from 2004.

grapes

Alexzandra & Ashley Rico as a bunch of grapes and someone riding a pony-on-a-stick.

sally

Ashley went all out in her portrayal of Sally from Nightmare Before Christmas.

burnett

The pride of Burbank, Ky Matthes went as Carol Burnett's character from her show's "Went With the Wind" skit.

zombie

Our first zombie, Carol Galloway.

ashes

We haven't met one of our neighbors down the street, and will be using Halloween as an excuse to pop in and say hello. Here's hoping they're dressed up like Robert & Julie Ashe when they open the door.

care-bears

Another great one—here are Melissa Shumate and her sister Al rocking homemade Care Bears costumes.

Let's wrap this up with a few photos of various mental_floss staffers...

Staff Photos

sweeney-and-lovett

Last year, Paul & Stacy Conradt got all dolled up as Sweeney Todd and Mrs. Lovett. Wonder what she's planning this year?

stacy-conradt

And here's Stacy from yesteryear.

missc-andrea

Miss Cellania as a rock and roll witch; Andréa Fernandes as a really scary clown.

Scott-Allen

Scott Allen as the DC Metro.

plautz-savage

On the right, Brett Savage as Robin. On the left, Jason Plautz as...well, I'm not sure. I don't think it's actually from Halloween, but I really love that pic. I may go as that next year.

halloween_mike_and_chris

The Higgins Brothers, circa 1981. Mike as The Lone Ranger; Chris as a kitty cat.

halloween1981

Also from Halloween '81: my wife and I pay tribute to our favorite Sesame Street characters. Our 15-month-old daughter will follow in our footsteps tomorrow when she steps into an Elmo costume. She loves Elmo in books and as a doll, but I'm not certain she actually wants to be Elmo. This could get interesting.

Happy Halloween, everybody! Hope it's a memorable one. Take some good pics for next year's round-up.

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iStock // Ekaterina Minaeva
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technology
Man Buys Two Metric Tons of LEGO Bricks; Sorts Them Via Machine Learning
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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!

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iStock
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Here's How to Change Your Name on Facebook
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iStock

Whether you want to change your legal name, adopt a new nickname, or simply reinvent your online persona, it's helpful to know the process of resetting your name on Facebook. The social media site isn't a fan of fake accounts, and as a result changing your name is a little more complicated than updating your profile picture or relationship status. Luckily, Daily Dot laid out the steps.

Start by going to the blue bar at the top of the page in desktop view and clicking the down arrow to the far right. From here, go to Settings. This should take you to the General Account Settings page. Find your name as it appears on your profile and click the Edit link to the right of it. Now, you can input your preferred first and last name, and if you’d like, your middle name.

The steps are similar in Facebook mobile. To find Settings, tap the More option in the bottom right corner. Go to Account Settings, then General, then hit your name to change it.

Whatever you type should adhere to Facebook's guidelines, which prohibit symbols, numbers, unusual capitalization, and honorifics like Mr., Ms., and Dr. Before landing on a name, make sure you’re ready to commit to it: Facebook won’t let you update it again for 60 days. If you aren’t happy with these restrictions, adding a secondary name or a name pronunciation might better suit your needs. You can do this by going to the Details About You heading under the About page of your profile.

[h/t Daily Dot]

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