@ibm-watson/natural-language-understanding-nodejs

Natural Language Understanding is a collection of APIs that offer text analysis through natural language processing. This set of APIs can analyze text to help you understand its concepts, entities, keywords, sentiment, and more. Additionally, you can create a custom model for some APIs to get specific results that are tailored to your domain.

Prerequisites

Sign up for an IBM Cloud account.
Download the IBM Cloud CLI.
Create an instance of the Natural Language Understanding service and get your credentials:
- Go to the Natural Language Understanding page in the IBM Cloud Catalog.
- Log in to your IBM Cloud account.
- Click Create.
- Click Show to view the service credentials.
- Copy the apikey value.
- Copy the url value.

Configuring the application

In the application folder, copy the .env.example file and create a file called .env
```
cp .env.example .env
```
Open the .env file and add the service credentials that you obtained in the previous step.
Example .env file that configures the apikey and url for a Natural Language Understanding service instance hosted in the US East region:
```
NATURAL_LANGUAGE_UNDERSTANDING_IAM_APIKEY=X4rbi8vwZmKpXfowaS3GAsA7vdy17Qh7km5D6EzKLHL2
NATURAL_LANGUAGE_UNDERSTANDING_URL=https://gateway-wdc.watsonplatform.net/natural-language-understanding/api
```

Running locally

Install the dependencies
```
npm install
```
Run the application
```
npm start
```
View the application in a browser at localhost:3000

Deploying to IBM Cloud as a Cloud Foundry Application

Login to IBM Cloud with the IBM Cloud CLI
```
ibmcloud login
```
Target a Cloud Foundry organization and space.
```
ibmcloud target --cf
```
Edit the manifest.yml file. Change the name field to something unique.
For example, - name: my-app-name.
Deploy the application
```
ibmcloud app push
```
View the application online at the app URL.
For example: https://my-app-name.mybluemix.net

Directory structure

.
├── app.js                      // express routes
├── config                      // express configuration
│   ├── express.js
│   └── security.js
├── manifest.yml
├── package.json
├── public                      // static resources
├── server.js                   // entry point
├── test                        // tests
└── views                       // react components