A Recap of Science Fiction Movies of 2013

The year 2013 is now long passed so I figured I’d review the science fiction films released that year. Here are 10 significant (meaning only that I saw them) sci-fi movies from 2013, with my ratings, from best to worst. I didn’t include super hero movies like Iron Man 3, Man of Steel, Thor: The Dark World, and The Wolverine because they belong in a separate category in my mind.

1. Gravity – Grade = A. Sandra Bullock and George Clooney adrift in space. This movie had me on the edge of my seat from the first scene to the last. No real plot to speak of, and not much character development, so I can understand why a lot of people don’t like this movie so much. But I loved it.

Gravity

2. Oblivion – Grade = A-. Tom Cruise as one of the few humans on Earth after a war with aliens. I rarely have high expectations for a Tom Cruise vehicle, but I was very pleasantly surprised. Very clever plot. At the end, I found myself saying, in a good way, “Why didn’t I see that coming!?”

Oblivion2

3. The Hunger Games: Catching Fire – Grade = B. Jennifer Lawrence competes against previous champions in a fight to the death. I didn’t like the first Hunger Games (2012) movie at all. I was forced to see this film and it was another pleasant surprise. This second Hunger was a lot less trite and clichéd than the first.

HungerGames

4. Star Trek into Darkness – Grade = B. Chris Pine as Kirk versus Khan. Again. A third 2013 film that exceeded my expectations. I liked the first Chris Pine Star Trek (2009) a lot, but sequels can be iffy propositions, so didn’t know what to expect here. I prefer this sequel to the 2009 film. Good action combined with intelligent plot.

HH

5. Ender’s Game – Grade = B-. Space cadet Ender Wiggin destroys an alien species then saves their last egg. Many of my friends are huge fans of the book and so were rather disappointed with this somewhat lackluster film. Not a bad film, just not a really good film.

EndersGame

6. Pacific Rim – Grade = C. Giant robots are created to battle giant alien monsters emerging from some other dimension or something, on the ocean floor. I liked this much better than I thought I would. A good friend of mine, Ken L., is a often perfect negative indicator for me. Usually, movies that he likes a lot, like Sucker Punch (2011), are not my favorites, and movies I like, typically leave him unimpressed. So, when Ken raved about Pacific Rim, I was wary. But it was much better than I thought it’d be.

PacificRim

7. Elysium – Grade = C. Matt Damon champions the downtrodden on Earth against the elite citizens in space. I like most Matt Damon films. And the story sounded intriguing. But the movie just didn’t do much for me. The entire story seemed a bit illogical and too far-fetched to me, which I know is weird when I can suspend disbelief for other films.

Elysium

8. Europa Report – Grade = C. Found video footage reveals how a mission to Jupiter’s moon Europa went wrong. Not a bad low-budget little movie. Seemed fairly realistic to me, but the story dragged a bit.

Europa

9. Riddick – Grade = C. Arg! Vin Diesel doing a lot of staring and a lot of fighting. I really like Chronicles of Riddick (2004) and had high hopes. But, alas, this part III just didn’t come together for me. Just a little too slow, a little too lame. One of those films where the whole is less than the sum of its parts.

Riddick

10. After Earth – Grade = F. An incredibly annoying Jaden Smith and a moderately annoying Will Smith roaming randomly in a thoroughly annoying movie. Bad movie. Very bad movie. It’s hard for a movie to be both boring and not make sense because of the action, but this film did. Epic bad.

AfterEarth2

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Creating Neural Networks using Azure Machine Learning Studio

Several weeks ago, Microsoft released a new tool and system to create machine learning models. I wrote an article titled “Creating Neural Networks using Azure Machine Learning Studio” in the September 2014 issue of Visual Studio Magazine. See http://visualstudiomagazine.com/articles/2014/09/01/azure-machine-learning-studio.aspx.

NeuralNetworksWithAzureML-VSM

The system is Cloud-based (on Microsoft Azure). The backend, where computations are performed, is called Microsoft Azure Machine Learning (sometimes abbreviated MAML). The front-end UI part of the system is a Web application called Machine Learning Studio (ML Studio).

In the article, I describe, step by step, how to create a neural network model that predicts the species (either “setosa”, “versicolor”, or “virginica”) of an iris flower, based on four numeric features: sepal length, sepal width, petal length, and petal width. A sepal is a green leaf-like structure.

ML Studio is an almost completely drag and drop system. You drag items that represent either data or actions on data (functions or methods to a programmer) onto a design surface and then connect the modules.

Fig1- IrisExperiment

The graphical approach is much, much faster than creating a prediction model using code. On the downside, the SDK for the system has not yet been released so you can’t write custom modules, meaning you can only do whatever the built-in modules can do. An analogy is Lego. With a lot of Lego modules you can build a lot of cool things. But if you had some machine to design and create custom Lego pieces (like an SDK), you could build anything.

It will be interesting to see if Azure ML gains traction among developers, business analysts, and data scientists. I think Azure ML is very cool, but the technology landscape is littered with the carcasses of great technologies that never caught on because of bad marketing or bad timing or just bad luck.

Posted in Machine Learning | Leave a comment

Dev Connections Conference 2014 Recap

I spoke for Microsoft at the 2014 Dev Connections software and IT conference this week (September 15-19). I gave two talks, “Introduction to Speech Recognition with C#” and “Developing Neural Networks with Visual Studio”. I’d estimate there were about 1,500 attendees at the conference. One guy I talked to at a lunch was a typical attendee: he worked for a mid-sized regional bank as sort of a Jack of all trades, doing IT tasks, and also developing line of business applications (both desktop and Web). My strategic goal was to educate attendees about Microsoft’s expertise and thought leadership with machine learning. My tactical goal was to demonstrate to developers that using the Microsoft technology stack (Visual Studio, C#, Azure, etc.) is a great way (actually, the best way in my honest opinion) to extract usable information from data.

DevConnections2014RegistrationArea

The conference had well over 200 one-hour talks. In each hour time slot, there were between 12 and 20 talks for attendees to choose from. Each room held about 120 people, plus a handful of double-sized rooms.

The conference was at the Aria hotel in Las Vegas. Las Vegas is my favorite place for conferences. It’s relatively inexpensive, and easy to get to from almost anywhere. The hotels are huge (I read that 15 of the largest 25 hotels in the world are in Vegas) with enormous convention areas so there’s no need for attendees to be scattered across a dozen different hotels and have to bus or taxi to a dedicated convention center (such as in San Francisco). Also, the town is walking-friendly, close to the airport (about a $25 fare), and has lots of things to see.

If you haven’t been to a conference in Las Vegas before, you might not have an accurate idea of what goes on. These aren’t party-time morale events. You typically get up very early in the morning, and then attend in-depth technical sessions all day long. It’s actually quite exhausting, but in a pleasant way if you’re a geek like me.

DevConnections2014SpeechBeforeTheTalk

Developer and IT conferences like Dev Connections are fairly expensive, typically from $1700 to $3600 for a 3 to 5 day event. Are they worth the price? In my opinion, yes. The true value doesn’t really come from the content in the conference sessions — much of conferences’ content is available online. The value comes from being exposed to new ideas and techniques that you just don’t have time to discover during day to day work tasks. Without crunching any numbers, I’d estimate that a developer who attends one of these conferences will pay back his company, in terms of increased and improved productivity, far more than the cost of attending.

Posted in Machine Learning | Leave a comment

Graphing Ackley’s Function using SciLab

Ackley’s function is a standard benchmark mathematical function used to test numerical optimization algorithms. The function is defined in two dimensions as:

f(x,y) = -20 * exp(-0.2*sqrt(0.5*(x^2 + y^2))) -
           - exp(0.5*cos(2*pi*x) + cos(2*pi*y)))
           + 20 + e

The function has a minimum value of 0.0 located at x = 0, y = 0. I wanted to graph the function so I used SciLab, a free program that is similar to the very expensive MatLab program.

Here are the five SciLab commands I issued:

-->[x,y]=meshgrid(-4:.10:4,-4:.10:4);
-->z=-20 * exp(-0.2*sqrt(0.5 * (x.^2 + y.^2)))
     - exp(0.5 * (cos(2*%pi*x) + cos(2*%pi*y)))
     + 20 + %e;
-->g=scf();
-->g.color_map=jetcolormap(64);
-->surf(x,y,z);

The first command sets up a matrix of (x,y) values from -4 to +4, 0.10 units apart. The second command is the definition of Ackley’s function for two variables. Note the use of the .^ operator rather than the ^ operator. The third through fifth commands create the graph.

AckleysFunctionGraphScreenshot

Notice that Ackley’s function has many local minimum values, which makes finding the optimal solution at (0,0) a bit tricky for some numerical optimization algorithms.

Posted in Machine Learning

Introduction to Microsoft Machine Learning Studio

I wrote an article titled “Introduction to Machine Learning Studio” in the September 2014 issue of MSDN Magazine. See http://msdn.microsoft.com/en-us/magazine/dn781358.aspx. Actually the title is a bit inaccurate (on purpose). Machine Learning Studio (ML Studio) is a Web application that allows you to create a machine learning system using drag-and-drop modules — no coding at all. ML Studio is essentially the UI for Microsoft Azure Machine Learning, which is a Web service that does all the work.

Figure1-A Complete ML Studio Experiment

In the article, I explain, step-by-step, how to create a system that predicts whether a U.S. Congressman is a Republican or Democrat, based on their voting record. The example uses Logistic Regression, but ML Studio supports several different ML classification techniques, including neural networks.

Overall, I am quite a fan of ML Studio. Using the tool saves a ton of time compared to my normal code-from-scratch approach. On the downside, ML Studio does not yet have an SDK so it’s not currently possible to create custom-coded modules using C# (although ML Studio can execute R language scripts, which is sort of a customization approach).

And, I’m really not a fan of Cloud-based applications. I know they’re the wave of the future and inevitable, but I prefer having my entire system local, sitting in a PC in my office. I get annoyed by Cloud-based systems that are constantly changing — I like a stable platform to work on even if it means I need to install upgrades every now and then.

Posted in Machine Learning

Winnow Classification using C#

I wrote an article titled “Winnow Classification using C#” in the September 2014 issue of MSDN Magazine. See http://msdn.microsoft.com/en-us/magazine/dn781362.aspx. In machine learning, an example of a classification problem is to predict which class (male or female) a person belongs to, based on features such as occupation, political party, height and so on. There are many kinds of classification techniques, including neural network classifiers, logistic regression classification, and so on.

WinnowDemo

Winnow classification is a relatively little-used technique. Winnow classification applies when the dependent y-variable to predict is binary (two possible values, like sex) and also each of the independent predictor variables is also binary. The example I present in the MSDN article predicts whether a member of the U.S. Congress is a Democrat or a Republican, based on 16 predictor votes which can be “yes” or “no”.

In my opinion, there is no clear evidence that tells whether Winnow Classification is better, worse, or about equal to other classification techniques.

Posted in Machine Learning

Neural Network Batch and Online Training

I wrote an article titled “Understanding Neural Network Batch Training: A Tutorial” in the August 2014 issue of Visual Studio Magazine. See http://visualstudiomagazine.com/articles/2014/08/01/batch-training.aspx.

BatchTraining

By far the most common technique used to train a neural network is called back-propagation. But there are alternatives including using particle swarm optimization, or using simplex optimization. Each of the possible training techniques can be applied using one of two approaches, usually called “batch” and “online” training.

In batch training, in each iteration of the main training loop, all training data items are examined and their associated errors (differences between the computed output values and the actual output values) are then used to modify the network’s weights and bias values.

In online training, in each iteration of the main training loop, after each test item is fed to the network, weights and bias values are immediately updated.

Research suggest that online training is quite a bit superior to batch training when using back-propagation, but research results are not clear if online training is better when using particle swarm or simplex optimization.

Posted in Machine Learning