Profile

Cover photo
Thomas Egense
Works at Statsbiblioteket
Attended Århus Universitet
Lives in Aarhus
17,156 followers|535,394 views
AboutPostsCollectionsPhotosYouTube+1's

Stream

Pinned

Thomas Egense

Shared publicly  - 
 
Improving search results in **The Danish Internet Archive
A small update on one of the projects we are currently working on at The State and University Library.

The State and University Library has been harvesting the Danish internet since 2005 just like the the Internet Archive (https://archive.org). We have also build a search engine on top of our 500TB harvested Arc/Warc files. We have 4billion documents in the index now, but we have also only indexed about 20% of raw data so far. Using the search engine we can easy search for material compared to the Internet Archive where have to know the URL if you want to see the historic webpage.

The index  contains only the text/meta-data for the harvested pages and the binaries are stored in the Arc/Warc files. But in the search result we have also index the offsets from the Arc-files for the documents. So after the search result has been returned we can enrich the result with the binaries loaded from the Arc/Warc-files. And this is what I did, making a simple mimetype servlet that returns the binaries. (images/pdf/html/js.. etc.)

This makes it a lot faster for the internet researchers to have the images  included directly in the  search result or a download-button to  download a PDF etc. Before they had to load the webpage in the 'Wayback' engine.

Our Isilon storage which has the 500TB Arc/Warc data has no problem returning the binaries almost instantly  even though the webpage loads 20 of the images simultaneously by the servlet and every image is several MB. The servlet  resizes  them for the search-result but the download will be original content of course.

Disclaimer: The screenshot is just my proof of concept frontend.
For the real front-end we are aiming for "shine" (https://github.com/netarchivesuite/shine) which is also used by British Library.
+Mads Villadsen​  is working on it from The State and University Library.

I have mentioned this Danish Internet Archive project before, here etc. :
https://plus.google.com/+ThomasEgense/posts/4AkaJr4qHWh

And for more technical details how we are improving the response time of the searches, especially for the facets you can read some of the blogs by +Toke Eskildsen​.

This small mimetype servlet, just as all our internet archive projects,  is open source  github:  https://github.com/netarchivesuite/webarchivemimetypeservlet

+Christian Jørgensen​ 
6
Add a comment...

Thomas Egense

Shared publicly  - 
 
How to win (get a small advantage) in a game that seems impossible to exploit.

The Game:

1:
You opponent picks  two different numbers  both >0 and they are not restricted to the integers. The two numbers are written on two pieces of paper and placed  face down.  That is ANY numbers he decided which  could be 42 or  e^pi og a googol etc.

2)
Your are allowed to pick one of the numbers at random and turn it face up and see the number.

3)
You can now with (strict) > 50% probablity reveal if the unknown number is higher than or less than the revealed number.

How??? See the Alex Bellos video below.

A very clever component can minimize you advantage to as close as 50% as possible but never reach 50%,  you will always have a small advantage.

Computer simulations show you have over 60% chance of success if the opponent is very bad when pick two 'random' numbers as humans tend to do.
 
Here's my latest Numberphile vid, about a guessing game I write about in Alex Through the Looking Glass/The Gapes of Math. Great to see that so many people have ran simulations that prove it works!
View original post
4
1
Lasse Reichstein's profile photo
Add a comment...

Thomas Egense

Shared publicly  - 
 
And how we have a result for cubes similar to Lagrange's four-square theorem

I notice that the result of seven cubes needed is a little more than I would expect from the four squares to obtain the same, and yet there even is a few numbers where eight cubes is needed. 

This new theorem should be named Siksek's eight-cubes theorem.


While this theorem may have no practical use, I am still satisfied to know the truth.
 
Number theory is famous for having a lot of easily stated but hopelessly difficult open problems (e.g. Goldbach's conjecture, the twin prime conjecture, etc...).  But the last few decades have seen a remarkable amount of progress on many of these, some of which have been open for centuries.  Here is another example that just hit arXiv today:  every integer greater than 454 is a sum of at most 7 positive cubes.
Abstract: A long-standing conjecture states that every positive integer other than 15, 22, 23, 50, 114, 167, 175, 186, 212, 231, 238, 239, 303, 364, 420, 428, 454 is a sum of at most seven positive cubes. This was first observed by Dase and Jacobi in 1851 on the basis of extensive ...
View original post
5
Add a comment...

Thomas Egense

Shared publicly  - 
 
Game of thrones Season five to be premiered TODAY

And if you want a small recap of what happened in the previous four seasons these gorillas have a very short version of the plot  :)

via +Søren Sprogø 
6
1
Marius Piedallu van Wyk's profile photo
Add a comment...

Thomas Egense

Shared publicly  - 
 
The Danish Newspaper Online Archive is now online

After 200+ years of collecting all danish newspapers and stacking them in warehouses or copying them to microfilms, they can  now   be  accessed online for free!  At The State And University Library Aarhus we have been working on this project for years and are very happy to open it to the public today.

We have build a powerful search engine on top of all data so it is easy to find text matches down to a specific page with  highlighting and you can download the newspaper as a PDF. For historians this is a gold mine and  the general public will be able to search for family members or old articles they want to read again.

Limitations:
So far we have only 1 million news paper pages in the index, but this will increase to over 32 million pages over the next year.

You can only search in newspapers that are older than 100 years, unless you search from the computers within the State and University Library where there is no limitations.

The OCR (Optical character recognition) is not perfect and this is most evident in oldest newspapers, but we have several ideas how to improve this over time.

Since we just went live today there is a heavy load on the site - so be gentle :)

+Peter Mouritsen
+Toke Eskildsen
+Mads Villadsen
+Per Møldrup-Dalum 
Din e-mail-adresse (hvis du vil have svar fra os): OK Mediestream bruger cookies til at lave statistik over trafikken på siden og til at forbedre brugeroplevelsen. Ved at klikke videre accepterer du brugen af cookies, som du i øvrigt til enhver tid kan slette. Læs mere om vores cookiepolitik.
17
3
Kåre Fiedler Christiansen's profile photoDanny Lade's profile photo
Add a comment...

Thomas Egense

Shared publicly  - 
 
Robert Langlands  - the mathematician behind the 'Langlands Program'.

The 'Langlands program' can be compared to the similar hunt for a "Unified Theory" in physics. The program is trying to connect previous believed totally unrelated branches of mathematics and some of the found connections is still a mystery.

If you want a much deeper understanding about this project I can recommend reading "Love and Math" by Edward Frenkel. But the book require some mathematical knowledge to understand the concepts in more details. I did not understand everything since it require knowledge in so many different branches of mathematics.  Still the book is the best way to gain a deeper insight into the frontiers of mathematical research.
Canadian Robert Langlands is 'like a modern-day Einstein,' who has devoted his life to the limits of pure mathematics
28
10
Mir Nasir's profile photoJan Knudsen's profile photoTimur Sattarov's profile photoDorte Mogensen's profile photo
5 comments
 
Lige så meget som muligt 🐘
 ·  Translate
Add a comment...

Thomas Egense

Shared publicly  - 
 
The counterintuitive Borwein Integral

For an explanation  see: http://schmid-werren.ch/hanspeter/publications/2014elemath.pdf

(Found on Quora)

#mathematics  
46
22
Emre Safak's profile photoMarc Timme's profile photoThilo Gross's profile photoCharo Del Genio's profile photo
8 comments
 
Funny 😂
Add a comment...
Have him in circles
17,156 people
Creece Rubia's profile photo
Shawn Scientifica's profile photo
Rasmus Faber-Espensen's profile photo
華宮遊覽車公司.台灣行社交圈's profile photo
Isaac Kuo's profile photo
Kevin Potter's profile photo
Johan Gerber's profile photo
Dan Jackson's profile photo
Sabro Pizza's profile photo

Communities

5 communities

Thomas Egense

Shared publicly  - 
 
This 'rocket' was far better than  I had expected...
Amazing sounds as well.
12
2
peter blenkinsop's profile photoDennis D. McDonald's profile photoPatricia Vega's profile photo
 
Fantastic
Add a comment...

Thomas Egense

Shared publicly  - 
 
For  #caturday here is my siamese  (Anubis) finding new opportunities with a tree I cut down  by using it as a look-out point.
11
Add a comment...

Thomas Egense

Shared publicly  - 
 
Help teach science to students, save the planet and get an octopus!

The awesome team behind TWDK (http://www.thingswedontknow.com/team.php) have started a fundraising campaign to cover some of the basic costs involved in running the site such as research, artwork, writing expense etc.

I was contacted by the TWDK  team and asked if I wanted to help with this charity campaign and since it both involved teaching science and environmental awareness,  I instantly agreed.

Six of my  best fractals all resembling marine creatures can be picked as rewards when donating more than £150 GBP. I am selling the fractals very close to my production/shipping cost  so donaters will get some value for their money.  The total price for supporting the project and getting a fractal is still less  than my regular price for the same fractal.

The campaign is scheduled to run for 60 days.

+John Baez
Free climate change resources for schools | Crowdfunding is a democratic way to support the fundraising needs of your community. Make a contribution today!
11
2
Darryl “Ustād” Barnes's profile photoKevin Clift's profile photo
Add a comment...

Thomas Egense

Shared publicly  - 
 
* Five Podcasts from BBC about the most important programming languages*

The 15 minutes duration of each podcast is perfect timed with the driving time to my workplace...
 
Programming Languages

As part of the BBC's Make it Digital Season, Aleks Krotoski presents a brief history of some of the most famous high-level programming languages.  Each of these easily digested programmes is only fifteen minutes long and is available online as a stream and as a podcast or MP3 file.

Aleks Krotoski explores the history of programming languages. The history of computing is dominated by the hardware; the race for speed and power has overshadowed how we've devised ways to instruct these machines to do useful tasks.

Listen here (15 min streams):

These programmes should be available worldwide without restriction. They are easiest to play on a computer (Flash) although they will work on iOS with a few extra clicks and on Android after the BBC media player http://goo.gl/oHuhfM is installed.


Fortran: http://goo.gl/AYbDwV
Cobol: http://goo.gl/JSz51R
Basic: http://goo.gl/V4uWEP
Java: http://goo.gl/BJQwla
The Tower of Babel: http://goo.gl/eo0jL2


Podcast and MP3s: http://goo.gl/qCgm70

BBC Make it Digital: http://goo.gl/3am6qs

Image: http://goo.gl/AvQf1O
9 comments on original post
14
2
Ṫḩṓḿ Ƒᴙᴑᶊᵵ's profile photoDarryl “Ustād” Barnes's profile photoAllan MacDonald's profile photo
 
use to program in fortran 77
Add a comment...

Thomas Egense

Shared publicly  - 
 
New shipment arrived

The one to the right in wrap (Seaweed 120cm*120cm) is sold to +Jacques Riget and is copy #3  and final print of this fractal.

The two to the left (Turtle and Octopus) are replacements of the two sold to +Marselisborg Gymnasium.

The two middle smaller fractals are on printed on glass and due to reflections very hard to catch sharp on camera.
18
Add a comment...
Thomas's Collections
People
Have him in circles
17,156 people
Creece Rubia's profile photo
Shawn Scientifica's profile photo
Rasmus Faber-Espensen's profile photo
華宮遊覽車公司.台灣行社交圈's profile photo
Isaac Kuo's profile photo
Kevin Potter's profile photo
Johan Gerber's profile photo
Dan Jackson's profile photo
Sabro Pizza's profile photo
Communities
5 communities
Education
  • Århus Universitet
    Cand. Scient, Mathematics/Physics, 1991 - 2000
Basic Information
Gender
Male
Looking for
Friends, Dating, Networking
Relationship
Single
Other names
Zoozie
Story
Tagline
I have a math blog and I am generally interested in all kinds of scientific matters. I use mathematics to create art – you can check out my album. I try to find unique content for my posts,which are mostly of scientific nature.
Introduction
Keywords that describe me as a person: scientist, mathematician, sceptic, atheist, blogger, and digital artist.

I blog about my mathematical adventures, where I, among other things, solve various puzzles,  which often involves brute force CPU attack on the problems.

In my spare time I use mathematics to create art.

For the last 12 years I have worked as a Java programmer.

I like retro-gaming, and I never become tired of talking about old-school games or computer
music (C64/Amiga).

I love animals - especially cats - and I have two cats of my own.
Bragging rights
Cream of the Crop 15/4-2012: http://www.circlecount.com/daily/?date=04%2F15%2F12
Work
Occupation
IT Specialist(J2EE)
Employment
  • Statsbiblioteket
    IT Consultant, 2011 - present
  • IBM
    Advisory IT Specialist, 2006 - 2011
  • Acure
    Software developer, 2005 - 2006
  • Mærsk Data
    Consultant, 2003 - 2005
  • LEC
    Consultant, 2000 - 2003
Places
Map of the places this user has livedMap of the places this user has livedMap of the places this user has lived
Currently
Aarhus
Previously
Århus
Contact Information
Home
Phone
24409997
Email
Thomas Egense's +1's are the things they like, agree with, or want to recommend.
Opsving? Hvilket opsving? - Ingeniøren
ing.dk

Med skyldig reference til Supertramp må man spørge sig selv om hvad pokker DJØF'erne har gang i inden på Christiansborg?

The Revolutionary Galois Theory
www.science4all.org

Recent Articles. The Massive Puzzles of Gravity · Lê Nguyên Hoang The Massive Puzzles of Gravity By Lê Nguyên Hoang | Updated:2014-12 | View

De svære emner... stress og depression | Therese Hansen
qed.dk

Der er emner, der er svære at tage op med kollegerne. De mange sygemeldinger, det dårlige humør, de pludselige følelsesudbrud, de glemte aft

Solutions to Martin Gardner's best mathematical puzzles
www.theguardian.com

Last week I posed eight conundrums from the puzzle maestro’s archive. Here are the answers.

When Extrapolation Fails Us: Incorrect Mathematical Conjectures | WIRED
www.wired.com

It is well-known that our intuition is not perfect. We are predictably irrational in a huge number of ways in our everyday lives. But what a

JuiceSSH - SSH Client
market.android.com

The all in one terminal client for Android including SSH, Local Shell, Mosh and Telnet support. Features: - Full colour terminal / ssh clien

Mathematics – Community – Google+ (CommunityRank: 76) ─ CircleCount.com
www.circlecount.com

The CommunityRank of Mathematics – Community – Google+ is 76! Their about: A community for mathematicians, students, and mathematics enthusi

How to use the Solr Data Import Handler to index a MySQL database table ...
www.beingjavaguys.com

In this article we will go through Importing and indexing My Sql database table data in solr4 using Data Import Handler. In solr4 database t

Aldeles uopfordret ansøgning | Den sidste romantiker
madsholger.blogs.berlingske.dk

Jeg ansøger hermed uopfordret om en stilling i en af fremtidens verdensomspændende virksomheder med hovedsæde i Beijing, Mumbai, Moskva, Rio

Google+
market.android.com

Funktionen: - Verfolgen, was Freunde, Familie und interessante Leute auf der ganzen Welt teilen - Communities beitreten, um spannende Themen

ZooKeeper Cluster (Multi-Server) Setup
myjeeva.com

ZooKeeper Cluster - It's used as Distributed Coordination Service for Distributed Applications. How to deploy ZooKeeper Cluster (Multi-Serve

Ingen Nobelpris til Gudepartiklen - Ingeniøren
ing.dk

Kære alle danske medier. (undtagen ing.dk og DR.dk).

My Math blog | A blog about Math
mathblog.zeronteproject.com

How did we move from a deterministic point of view to a probabilistic one?. How do we study models of millions of particles?. How nature is

Her er Nobelfavoritterne 2013 - Ingeniøren
ing.dk

Der er under to uger til offentliggørelsen af årets Nobelpriser, og Thomson Reuters har nu lavet

Petition SAVE WARHAMMER ONLINE
www.ipetitions.com

How about a petition to SEGA/Creative Assembly to pick up WAR? There are many good reasons: SEGA already owns rights for warhammer fantasy.

Apache Tapestry 5 Makes Java Web Development Easy | Javalobby
java.dzone.com

I went through the Apache Tapestry 5 tutorial today and found it surprisingly easy to use. The two most productive features I love are auto

Scientist-Online
plus.google.com

Science kits gadgets and toys

The Rusty Ball
plus.google.com

Sharing My Balls (Circles) On G+