Extract key phrases and do sentiment analysis on text.
C# library for accessing Azure Machine Learning Text Analitics : [https://azure.microsoft.com/en-us/documentation/articles/machine-learning-apps-text-analytics/] (https://azure.microsoft.com/en-us/documentation/articles/machine-learning-apps-text-analytics/)
First, you need to install the package via NuGet:
PM> Install-Package AzureTextAnalytics
Next, create a configuration setting with your Account Key. You can obtain an Account Key here: https://datamarket.azure.com/dataset/amla/text-analytics
<appSettings>
<add key="AccountKey" value="{YOUR ACCOUNT KEY HERE}" />
</appSettings>The service returns a score betwen 0 and 1 where 0 is negative and 1 is positive.
var service = ServiceFactory.Build();
var sentiment = await service.GetSentimentAsync("This is some awesome text that needs sentiment analysis;");
Console.WriteLine(
sentiment.Success
? $"The sentiment score is {sentiment.Score}"
: sentiment.Error);Batch request
var service = ServiceFactory.Build();
var request = new Dictionary<string, string>
{
{ "1", "This is very positive text because I love this service" },
{ "2", "Test is very bad because I hate this service" },
{ "3", "The service was OK, nothing special, I've had better" },
{ "4", "" }
};
var batchResult = await service.GetBatchSentimentAsync(request);
foreach (var result in batchResult)
{
Console.WriteLine(
result.Value.Success
? $"Id: {result.Key} = {result.Value.Score}"
: $"Id: {result.Key} = Error: {result.Value.Error}");
}The service returns a a collection of key phrases.
var service = ServiceFactory.Build();
var phrases = await service.GetKeyPhrasesAsync("This is some awesome text that needs the key phrases extracted from.");
Console.WriteLine(
phrases.Success
? $"The key phrases are: {string.Join(",", phrases.Phrases)}"
: phrases.Error);Batch request
var service = ServiceFactory.Build();
var request = new Dictionary<string, string>
{
{ "1", "This is very positive text because I love this service" },
{ "2", "Test is very bad because I hate this service" },
{ "3", "The service was OK, nothing special, I've had better" },
{ "4", "" }
};
var batchResult = await service.GetBatchKeyPhrasesAsync(request);
foreach (var result in batchResult)
{
Console.WriteLine(
result.Value.Success
? $"Id: {result.Key} = {string.Join(",", result.Value.Phrases)}"
: $"Id: {result.Key} = Error: {result.Value.Error}");
}I'm happy to accept any pull requests (as long as they build).