Jason (Joo Seong) Jeong comments

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                                            Jason (Joo Seong) Jeong

Introduce momentum to DNN

* (Apparently) the first paper to propose the momentum method: Polyak, "Some methods of speeding up the convergence of iteration methods", 1964. * A good comparison of the classical momentum...

Implement matrix slicing for sparse matrices

@gyeongin We talked about this a bit and it seems that this issue wasn't actually that urgent as stated in the description. Let's revisit this later.

Use breeze wrapper instead of mahout

We decided to go with a breeze wrapper instead of mtj, due to license issues.

DNN gpu version integration test with ImageNet data

We are currently doing tests with the AlexNet model. Unfortunately, there are some issues regarding OOMs and we're using a subset of the whole ImageNet dataset.

DNN gpu version integration test with ImageNet data

Let's move this to the next milestone, instead of leaving a month-old milestone open.

Usages of Logger.entering and Logger.exiting

We might as well and create a PR for this one. Though, we should make sure that taking out all instances of LOG.entering/exiting truly doesn't matter for any of us.