Expert-Level Data Science Quiz
A deep dive into sophisticated techniques and theory for seasoned developers.
Quiz Questions
Answer all questions below and test your knowledge.
- 1
Which loss function is most appropriate for training a gradient boosted regression tree when the target distribution is highly skewed?
- 2
In a Spark Structured Streaming job, which operation guarantees exactly‑once semantics for aggregations?
- 3
Which dimensionality reduction technique preserves pairwise geodesic distances on a nonlinear manifold?
- 4
When deploying a TensorFlow model with TensorRT optimization, which precision mode typically yields the highest throughput without severe accuracy loss for image classification?
- 5
In causal inference, the back‑door criterion is satisfied if a set of variables blocks all back‑door paths. Which property must that set also satisfy?
- 6
Which SQL window function can be used to compute a running total that restarts for each new category?
- 7
In Bayesian optimization, the acquisition function balances exploration and exploitation. Which acquisition function explicitly incorporates the probability of improvement?
- 8
For a time‑series forecasting model, which evaluation metric is most robust to occasional large outliers?
- 9
When using Apache Arrow to share a DataFrame between Python and R, which data type mapping can cause silent precision loss?
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