Site now requires login to post comments

My blog has been getting a lot of comment spam which has been tedious to try to resolve. I am using several anti-spam Drupal modules and these catch a lot of spam but about 10 spam messages were still getting through per day. It got so bad that I completely disabled comments on my site but this was clearly not a good solution. So I have changed the permissions so users must log into my site before you can post comments. You can register a new account on this site or you can log in using Facebook, Google or Twitter (achieved using the Drupal HybridAuth plugin).

Report from NILM2014@London on comparing NILM algorithms

The first "NILM in London" workshop was held on Wednesday 3rd September. In this blog post, I'd like to try to summarise the discussion around comparing NILM algorithms.

Report from NILM2014@London on building an online discussion venue and wiki for NILM


The first "NILM in London" workshop was held on Wednesday 3rd September. It was a lot of fun and we had some great conversations. In this blog post, I'd like to try to summarise the discussion around building an online discussion forum for NILM.

At IBM until end of October


Sorry I haven't posted many blog posts recently. I'm currently about half way through a 3-month placement at IBM in Hursley, UK.

NILMTK v0.2 released!!

Hurray! We've released NILMTK v0.2! See this list of improvements on the docs page.

Introducing NILM Metadata: a schema for energy datasets and prior knowledge about appliances

One of our aims with the open-source energy disaggregation toolkit NILMTK is to make it easy to import any of the 10+ NILM datasets currently available. One of the pain points when writing a NILMTK importer for a new dataset is that each dataset uses a different metadata schema and, sometimes, there simply is no metadata associated with some datasets. At best, this means that we have to manually map from the dataset's appliance names to NILMTK's standard appliance names. At worse, it means that it's impossible to unambiguously import the dataset (did that channel really only include the fridge? It sure looks like there are other appliances on there. What's the wiring hierarchy between the mains meter, the circuit meters and the appliance meters? Does that channel record active power or apparent power? What pre-processing has already been applied? etc. etc.)

Why I'm sceptical about self-drive cars

A lot of attention has recently been given to self-drive (aka "robot" cars) recently, including this very impressive video released last week of a Google Self-Drive car navigating busy city streets.

Don't get me wrong: There are clearly some enormously smart people working on self-drive cars and the technical issues may well all be solved very soon (if they haven't already been solved).

But there are two reasons I'm sceptical that we'll see a mass-adoption of self-drive cars any time soon:

Post-doc funding

I'm probably still a year or so away from finishing my PhD but I've started to explore funding opportunities for UK computer science post doctoral researchers. (I think I'd really quite like to continue working on energy disaggregation after my PhD; there are still lots of research problems; and we're a very long way from having a robust, open source disaggregation tool for end-users).

Introducing NILMTK: an open source toolkit for non-intrusive load monitoring

Today, Nipun Batra, Jack Kelly and Oliver Parson are really pleased to announce the release of NILMTK: an open source toolkit for non-intrusive load monitoring. The toolkit will allow researchers to easily develop algorithms which disaggregate a household’s total electricity consumption into individual appliances.

Specifically, the toolkit includes:

Non-Intrusive Load Monitoring ToolKit (nilmtk)

Nipun, Oli and I have just started work on an open source toolkit for non-intrusive load monitoring called nilmtk. We're pretty excited about it! It's only in the very, very earliest stages (the code repository currently has precisely zero lines of code in it!) although we've started to flesh out the design on the project's wiki.


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