hypnosis FFFA#F

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Categories: p5

Clustering of architectural floor plans: A comparison of shape representations

Eugénio Rodrigues, David Sousa-Rodrigues, Mafalda Teixeira de Sampayo, Adélio Rodrigues Gaspar, Álvaro Gomes, Carlos Henggeler Antunes


Generative design methods are able to produce a large number of potential solutions of architectural floor plans, which may be overwhelming for the decision-maker to cope with. Therefore, it is important to develop tools which organise the generated data in a meaningful manner. In this study, a comparative analysis of four architectural shape representations for the task of unsupervised clustering is presented. Three of the four shape representations are the Point Distance, Turning Function, and Grid-Based model approaches, which are based on known descriptors. The fourth proposed representation, Tangent Distance, calculates the distances of the contour’s tangents to the shape’s geometric centre. A hierarchical agglomerative clustering algorithm is used to cluster a synthetic dataset of 72 floor plans. When compared to a reference clustering, despite good perceptual results with the use of the Point Distance and Turning Function representations, the Tangent Distance descriptor (Rand index of 0.873) provides the best results. The Grid-Based descriptor presents the worst results.

Published in Automation in Construction.

Moving to HTTPS only.

After being so lazy about the web, I’ve decided to move my site to HTTPS only. It protects you, me, and everyone else. A safe web is a priority. You must be able to trust the connection between your computer and the site you visit. So for now on, sixhat.net is going to be served over HTTPS only. Probably some things will brake, but there’s no turning back. I’ll fix them (even if slowly) and move on.

AppleScript: Revised Document Statistics

This is a revised version of the clipboard document statistics script that I used some time ago. It now counts the paragraphs and includes a 1-button dialog box.

Count the number of characters, words and paragraphs in the clipboard
David R. - www.sixhat.net
To use place this script in your User Scripts folder in ~/Library/Scripts
set nChars to count (the clipboard)
set nWords to count words of (the clipboard)
set nParag to count paragraphs of (the clipboard)
display dialog "Characters: " & nChars & "
Words: " & nWords & "
Paragraphs: " & nParag buttons {"OK"} default button 1

Installing the script

To use the script just use the AppleScript Editor that ships with MacOS (search in side the utilities folder) and save this as a script in your Scripts folder in ~/Library/Scripts.

756 EV cars sold in Portugal during 2016

I’ve just read that the Portuguese bought 756 (+17%) full electric vehicles during 2016 (mostly Nissan Leafs). That might seem a small number — as it is just 0,36% of the market — but it is a good clear sign of the future. Electric is both cheap and clean and with the arrival of the 300+Km cars in 2017 I imagine that many will start looking at them with greater curiosity. I’m really curious to see how the introduction of the 41Kwh Renault Zoe, the Opel Ampera-e and the Hyundai Ioniq will impact these numbers during this year.

The Second Machine Age: Work, Progress, and Prosperity in a Time of Brilliant Technologies ★★★★

The Second Machine Age: Work, Progress, and Prosperity in a Time of Brilliant Technologies ★★★★
by Erik Brynjolfsson, Andrew McAfee

The Second Machine Age: Work, Progress, and Prosperity in a Time of Brilliant Technologies

This is a book the reflect upon. Well, not the book, but the ideas in it. The topics covered claim that we are living alongside a transformative force that will change the shape of the world as we know it.

The author argues that the Second Machine Age is upon us in the form of the crescent digitisation of everything. This is reshaping most of the fundamental aspects of our economies where the cost structures of the digital goals are becoming negligible.

There are many ideas in the book (alongside with some advice) that are food for thought, and this is probably the books best-selling point. The only negative aspect I found is that it focuses mostly on America in the latter chapters of the book.

A curiosity spoiler is that the book addresses some issues in the bounty-spread dichotomy that have been fundamental in recent elections (Brexit and Trump), so they acquire some prophetic aspect when reading the book in 2017.

I also enjoyed the chapters on education, although I found myself wanting more chapters on the topic. Naturally, education is not a “sexy” theme for everybody, but I believe it will become the fundamental tool to reshape the human side of the XXI century man-machine equation.

Highly recommended.

The Great War for Civilisation: The Conquest of the Middle East 2★

The Great War for Civilisation: The Conquest of the Middle East 2★
by Robert Fisk

A Grande Guerra pela Civilização by Robert Fisk

This book could have been very interesting if it was reduced to one third of its size. At more than 1000 pages it becomes very boring to read through. My advice? don’t bother with this one, or just skim through the most important chapters.

As an information source it shows how the west has f**ked up the situation in the middle east, and in part the mess of the world we live in is also our own fault. But all it tells us could be written in a non-mammoth way. It took me almost one year to make this go into the club37 shelve. My rating is just 2★ because of the size. Otherwise it could have been a 3 or 4 star book.