Recorded EventsRecorded Android UI Events are summarized in the following table, classiﬁed by their adhering window Unhandled Area 10
State Machine ModelExpert State Machine: Expert States and Transi3ons: 11
Traffic Flow ChartUser Traﬃc Flow Chart: Incoming ﬂow Outgoing ﬂow Flow to Mistake States Backtracking ﬂow Mistake States and Transi3ons: 12
Reported MetricsSigns for poten3al usability problems: -‐ Too many backtracking -‐ Par0cipants cannot complete one step -‐ Low correct ﬂow ra0o 13
EvaluationUsability Problems idenFﬁed by Event Logging Tool: * Numbers in parenthesis are problems idenFﬁed by Laboratory-‐ based Usability tesFng method: -‐ Good at iden3fying cri3cal (major and catastrophe) usability problems. -‐ Not good at iden3fying cosme3c usability problems. 14
Challenges• More precise analysis model with semantics• Integration with context• Inspection before deployment 15
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