The IBM Watson [Tradeoff Analytics][service_url] service helps filter data with multiple and conflicting objectives by reducing noise and identifying ideal matches based off of analytical analysis through multiple defined objectives. This provided sample application allows the user to select various health related questions -- endurance training, strength training, and weight loss -- and offers recommendations based off of the combination of both exercise and diet related data. Using the IBM Watson widget, the user is presented with visual graphs showing the various options filtered from the initial list of data.

• Allows users to analyzes and visualize the best choices to health problems from datasets containing mixed and competing trade-offs.
• Allows users to modify and edit the existing JSON datasets and objectives then re-analyze and calculate the results.
• Allows users to edit the Watson embedded widget profile that displays the calculated results.

Give it a try! Navigate to [our bluemix instance][bluemix_app_url] of this application or click the button below to fork into IBM DevOps Services and deploy your own copy of this application on Bluemix.

1. Create a Bluemix Account

   [Sign up][sign_up] in Bluemix, or use an existing account.

2. Download and install the [Cloud-foundry CLI][cloud_foundry] tool

3. Edit the manifest.yml file and change the <application-name> to something unique.

applications:
- services:
  - tradeoff-analytics-standard-service
  name: <application-name>
  command: node app.js
  path: .
  memory: 128M

The name you use will determinate your application url initially, e.g. <application-name>.mybluemix.net.

4. Connect to Bluemix in the command line tool.

$ cf api https://api.ng.bluemix.net
$ cf login -u <your user ID>

5. Create the Tradeoff Analytics service in Bluemix.

$ cf create-service tradeoff_analytics standard tradeoff-analytics-standard-service

6. Push it live!

$ cf push

See the full [Getting Started][getting_started] documentation for more details, including code snippets and references.

The application uses [Node.js][http://nodejs.org/] and [npm][https://www.npmjs.com/] so you will have to download and install them as part of the steps below.

1. Copy the credentials from your tradeoff-analytics-standard-service service in Bluemix to app.js, you can see the credentials using:

   $ cf env <application-name>

   Example output:

   System-Provided:
   {
   "VCAP_SERVICES": {
     "tradeoff_analytics": [{
         "credentials": {
           "url": "<url>",
           "password": "<password>",
           "username": "<username>"
         },
       "label": "tradeoff-analytics",
       "name": "tradeoff-analytics-standard-service",
       "plan": "standard"
    }]
   }
   }

   You need to copy username, password and url.

2. Install Node.js

3. Go to the project folder in a terminal and run: npm install

4. Start the application

5. node app.js

6. Go to http://localhost:3000

To troubleshoot your Bluemix app the main useful source of information are the logs, to see them, run:

$ cf logs <application-name> --recent

This sample code is licensed under Apache 2.0. Full license text is available in LICENSE.

See CONTRIBUTING.

Find more open source projects on the IBM Github Page [bluemix_app_url]: http://watsonta.mybluemix.net/ [service_url]: http://www.ibm.com/smarterplanet/us/en/ibmwatson/developercloud/tradeoff-analytics.html [cloud_foundry]: https://github.com/cloudfoundry/cli [getting_started]: http://www.ibm.com/smarterplanet/us/en/ibmwatson/developercloud/doc/getting_started/ [sign_up]: https://apps.admin.ibmcloud.com/manage/trial/bluemix.html?cm_mmc=WatsonDeveloperCloud-_-LandingSiteGetStarted-_-x-_-CreateAnAccountOnBluemixCLI