Category: Mathematics

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Determining if an element is in the last row of a table

Once upon a time I stumbled upon a problem, where I needed to calculate if an element is in the last row of a table. Here's the scenario: you have a number of items, which are put in a table from left to right. When the row is full, the items continue in the next row. Imagine an airplane or a theater where people start sitting front-left and continue to the right until they run out of space, then going to the next row and so on. Now we want to know which people are sitting in the last of the populated rows.

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written 12:57 CET on chronolog
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Is Delicious aiming to become the next Twitter?

The bookmarking service Delicious has had an interesting life. It was one of the first social services available, later bought by Yahoo and almost canceled, then being sold to Avos about a month ago. Avos was founded by the same people who've created YouTube (Chad Hurley and Steve Chen), and these guys obviously know what they're doing. A few days after acquiring Delicious, Avos also bought a social media analytics startup Tap11, and here's what they had to say about it:

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written 18:03 CET on chronolog
2550 views   •   1 like   •   1 comment  •   Like   •   
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A few thoughts on content categorization. No surprises there, less is more.

Since I've started collecting bookmarks using Delicious, I've put a lot of effort into their categorization, organizing them in such a way their browsing would be as simple as possible. The service supports two level categorization (tag – bundle) which helps to control massive amounts of links people have gathered. But it's the experimentation with different structures that gives real insight into content categorization, and because this topic was already mentioned and discussed a few times on this blog, it deserves a special mention. Let's begin.

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written 13:26 CET on chronolog
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Can you believe Watson got the question about Slovenia wrong on Jeopardy?

Slovenia made it to the spotlight again, for the first time after the soccer world cup (when Slovenia was trending topic on Twitter and top search on Google). This time, it happened because IBM's supercomputer Watson competed against human champions in the famous TV show Jeopardy. IBM's computers are known to destroy people in various challenges, Deep Blue beat the world champion Garry Kasparov in a chess tournament in 1997. But chess is simple for computers to play, because it is pure logic and mathematics – the capability of a player is determined by the number of operations and actions it can calculate in advance. But a quiz is a totally different story, where the biggest challenge is semantics – understanding the meaning of words.

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written 8:33 CET on chronolog
4150 views   •   2 likes   •   Like   •   
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The chronolog now understands connections between content

I once made a promise that I will try to incorporate as many interesting features as possible into my blog. My previous development sessions were based mostly on interactions of readers with the posts, the peak of it being the Hot on the chronolog algorithm. But now, as the chronolog finally reached critical mass in the amount of content it operates with, the time has come to do something new. The next step is focused on a different functionality, and a few days ago, the chronolog received an algorithm for recognizing relationships between different blog posts.

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written 22:20 CET on chronolog
2175 views   •   3 likes   •   6 comments  •   Like   •   
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Twitfluence prototype calculation for measuring Twitter influence

The prototype calculation of Twitfluence uses the data available form Twitter API to measure your Twitter influence and coolness. The basic technical specifications of the application is available, but I will also be supplying the basic information about how the algorithm works. The actual calculation is already online for beta users, and generally speaking, there are three major components that add up to the score: your followers, your mentions and retweets, and your lists, all accounted as ratios between you and others.

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written 12:54 CET on chronolog
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An approach to statistics and data analysis

When information systems evolve, they become greedier for both operational and advanced strategic statistics and data analysis. This need is a part of a natural evolution. The more data you have, the higher potential for extracting information you have. Looking at business environments using IT platforms, that's what analytics are actually all about - getting useful information from usually bad data. It turns out the task of analytical reporting is not so complex as it seems, but you definitely need a set of different skills / people to make it work.

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written 21:32 CET on chronolog
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