Escalating Hard Labels to Experts
When expert labels are expensive, one does not need every example labeled by the strongest human team. A single junior expert can label most cases, while harder cases are escalated to more experienced experts or a team.
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Escalating Hard Labels to Experts
Why is obtaining labeled data easier for tasks that humans perform well?
For tasks that humans perform well, human labelers can provide high-accuracy labels to train ML algorithms.
Andrew Ng writes that since people recognize _____ images well, it is straightforward for human labelers to provide high-accuracy labels.
Match each concept to its correct description regarding human labeling of human-solvable tasks.
Order the steps for deciding whether human labelers are a good fit for collecting labeled data for an ML task.
In Andrew Ng's medical imaging example, what error rate can a team of doctors achieve when providing labels?
According to Machine Learning Yearning, the ease-of-labeling advantage from human labelers applies only to image recognition tasks.
In Andrew Ng's medical imaging example, a team of _____ can provide labels at a 2% error rate.
Match each labeling scenario to the property that best explains it, based on Machine Learning Yearning.
Order Andrew Ng's reasoning steps for why human-solvable tasks benefit from human labelers.
Learn After
Why does Andrew Ng advise against routing every labeled example to a full team of expert doctors?
True or False: In the escalation labeling strategy, the junior expert is responsible for labeling every case, including the hardest ones.
In the escalation labeling strategy, a single _____ expert labels most cases while harder ones are sent to more experienced experts.
Match each type of labeling case or resource to its role in the escalation labeling strategy.
Order the steps for implementing a cost-efficient tiered labeling workflow using expert escalation.
In the escalation labeling strategy, what is the correct action when a junior expert encounters a case too difficult to label confidently?
True or False: The escalation labeling strategy requires every example in the dataset to be reviewed by at least one senior expert.
Andrew Ng suggests having a single junior doctor label the _____ of cases and escalating only the harder ones to more experienced doctors.
Match each key concept from the escalation labeling strategy to its correct description.
Order the reasoning steps Andrew Ng uses to justify a tiered, cost-efficient labeling approach.