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Complex stories are also common when developing new or extending known algorithms. One team in a biotech company had a story to add novel extensions to a standard statistical approach called expectation maximization. The complex story was rewritten as two stories: the first to research and determine the feasibility of extending expectation maximization; the second to add that functionality to the product. In situations like this one it is difficult to estimate how long the research story will take.

Consider Putting the Spike in a Different Iteration

When possible, it works well to put the investigative stor...


Cover of User Stories Applied: For Agile Software Development


Barry, spikes for investigation can go into a sprint. such as figuring out how to cancel.