{"blocks": [{"key": "f38abe60", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "dbf4f864", "text": "Your time-series machine-learning pipeline has become unstable and prediction accuracy is dropping.", "type": "unstyled", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "7fd9e0b6", "text": "Describe how you would diagnose the root cause across data ingestion, feature generation, and model-serving layers.", "type": "unordered-list-item", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "02377a31", "text": "Explain the evaluation framework, sampling strategy, and metrics you would use to quantify performance regressions.", "type": "unordered-list-item", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}, {"key": "585878b9", "text": "Outline the technical fixes and process changes you would implement to restore stability and prevent future issues.", "type": "unordered-list-item", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {}}], "entityMap": {}}