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TechTip: Watson, Talk to Me

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You can access the power of Watson from your IBM i using Node.js.

 

Do you feel that itch? The one you aren't sure if you can reach but know you should try? Yeah, it's the itch to expand the horizons of your IBM i to make use of Watson.

 

What Is Watson?

You've most likely heard of Watson at this point. It was the machine used to take on Jeopardy champions a few years ago. And it won! You can see a video of Watson competing here. Truly, this was a brilliant marketing play by IBM, but it was only the beginning. Now Watson is being used for (in my opinion) much more significant purposes, like healthcare.

 

When I was first starting my "Watson journey," I headed over to IBM's developer site to learn what types of API services are available. After a few clicks, I found myself at the Watson Services catalog. I perused through it quickly and pondered all the various cool apps that could be created. My middle son, Elliot, is seven years old and deaf. I thought maybe the Speech to Text service would come in handy because my wife and I don't yet know how well he'll be able to use the audio of a cell phone. One of the other uses they note is to use Speech to Text to record meeting notes so you end up with something that is easily searchable. Very cool!

 

A lot of the Watson documentation focuses on doing development through the BlueMix.net tooling. This article will show you how to instead do it right on your IBM i. That's right, you can access the power Watson for your business with little effort and very reasonable cost! (My account is actually operating off the free version right now).

 

First things first. You need to install Git on your IBM i so you can use the git clone command to obtain the source code from GitHub. You'll also need to obtain your public SSH key and paste it into your GitHub profile. I provided instructions in the article Git to Bit(bucket) on how to do this for Bitbucket, and it's very similar for GitHub.

 

Let's get the code!

 

The below git clone will communicate via SSH to GitHub and download the Node.js source code to the IFS in your IBM i.

 

$ git clone This email address is being protected from spambots. You need JavaScript enabled to view it.:watson-developer-cloud/speech-to-text-nodejs.git

Cloning into 'speech-to-text-nodejs'...

remote: Counting objects: 1340, done.

Receiving objects: 95% (1273/remote: Total 1340 (delta 0), reused 0 (delta 0), pack-reused 1340

Receiving objects: 100% (1340/1340), 7.09 MiB | 474.00 KiB/s, done.

Resolving deltas: 100% (878/878), done.

Checking connectivity... done.

Checking out files: 100% (122/122), done.

 

Now go into the directory and list the contents so you can see what's been downloaded, as shown below.

 

$ cd speech-to-text-nodejs/

$ ls

CONTRIBUTING.md LICENSE         app.js           manifest.yml     public

Dockerfile       README.md       config           package.json     src

 

The next step I took was to review the README.md file of the speech-to-next-nodejs repository, which can be found here, in order to learn what normal steps are necessary to install on BlueMix.net. There's a section in the README.md titled "Running Locally" that gives us some direction by first telling us we need to obtain credentials using the cf env <application-name> command. I didn't want to use their CLI tools, so I searched and found this article that details how to obtain credentials for Watson. Follow that article to obtain the necessary Watson credentials and then paste them into file app.js as shown in Figure 1.

 

100215BartellFigure1 nodejseditor

Figure 1: Paste Watson credentials into app.js.

 

Next we need to install dependent modules for this application by issuing the npm install command while in the root of the project folder. Below I show the command being run. I've clipped the results for brevity's sake.

 

$ npm install

This email address is being protected from spambots. You need JavaScript enabled to view it..2 node_modules/http-proxy

??? eventemitter3@1.1.1

??? requires-port@0.0.1

connect@3.3.5 node_modules/connect

??? utils-merge@1.0.0

??? parseurl@1.3.0

??? finalhandler@0.3.4 (escape-html@1.0.1, on-finished@2.2.1)

??? debug@2.1.3 (ms@0.7.0)

errorhandler@1.2.4 node_modules/errorhandler

??? escape-html@1.0.1

??? accepts@1.1.4 (negotiator@0.4.9, This email address is being protected from spambots. You need JavaScript enabled to view it.)

This email address is being protected from spambots. You need JavaScript enabled to view it..2 node_modules/body-parser

??? media-typer@0.3.0

??? bytes@1.0.0

??? raw-body@1.3.2

??? depd@1.0.1

??? on-finished@2.2.1 (ee-first@1.1.0)

??? qs@2.3.3

??? iconv-lite@0.4.6

??? type-is@1.5.7 (This email address is being protected from spambots. You need JavaScript enabled to view it.)

This email address is being protected from spambots. You need JavaScript enabled to view it..8 node_modules/express

??? utils-merge@1.0.0

??? methods@1.1.1

??? escape-html@1.0.1

??? range-parser@1.0.2

??? vary@1.0.1

. . .

 

Before running the application, they recommend using browserify to "compile" all of the JavaScript into a single file by using the node run build command, as shown. This is a good idea because it lessens the number of requests the browser makes back to the server to download JavaScript resources, thus speeding up your application.

 

$ npm run build

> SpeechToTextBrowserStarterApp@0.2.1 build /home/USRJRQ6F/speech-to-text-nodejs

> browserify -o public/js/main.js src/index.js

 

Ok, now we're set and ready to start the application, as shown below.

 

$ node app.js

listening at: 50093

 

Note I changed the port to 50093. You can change your port by scrolling to the bottom of app.js.

 

Because the experience of this application depends on audio, I thought it would be best to create a YouTube video to illustrate the full effect. Click here to watch the video.

 

Pretty cool stuff, huh?

 

My mind is buzzing with opportunities on how this API could be used, not to mention the other ones IBM Watson is continually coming out with.

 

What ideas do you have for the Watson APIs? Let's start a conversation and talk through the possibilities! Reach me at This email address is being protected from spambots. You need JavaScript enabled to view it..

Aaron Bartell

Aaron Bartell is Director of IBM i Innovation for Krengel Technology, Inc. Aaron facilitates adoption of open-source technologies on IBM i through professional services, staff training, speaking engagements, and the authoring of best practices within industry publications andwww.litmis.comWith a strong background in RPG application development, Aaron covers topics that enable IBM i shops to embrace today's leading technologies, including Ruby on Rails, Node.js, Git for RPG source change management, and RSpec for unit testing RPG. Aaron is a passionate advocate of vibrant technology communities and the corresponding benefits available for today's modern application developers. Connect with Aaron via email atThis email address is being protected from spambots. You need JavaScript enabled to view it..

Aaron lives with his wife and five children in southern Minnesota. He enjoys the vast amounts of laughter that having a young family brings, along with camping and music. He believes there's no greater purpose than to give of our life and time to help others.

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