IStreamable <Microsoft.StreamProcessing.Empty, RankedSentiment> TwitterAnalytics(IStreamable <Microsoft.StreamProcessing.Empty, Tweet> input)
{
return
// Sample analytics query - output average sentiment score per tweet topic
(input
.GroupApply(e => e.Topic,
str => str.HoppingWindowLifetime(TimeSpan.FromMinutes(5).Ticks, TimeSpan.FromSeconds(5).Ticks)
.Average(e => e.SentimentScore),
(g, c) => new RankedSentiment {
Topic = g.Key, AvgSentiment = c
})
//.TopK(10)
.AlterEventDuration(1)
);
}