IT Career Guides & Free Resources
Expert roadmaps, tutorials, salary guides and interview prep across Data Science, Generative AI, Python, Cloud & Analytics — written by GloryTecks trainers in Hyderabad.
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Real-Time Feature Engineering for Online Models
Online models need features from events seconds old, and those features must match the ones the model was trained on. On a month of real New York taxi pickups, this guide builds a streaming window counter, shows a one-character boundary change breaking 3.7% of lookups, and measures what a two-minute lag costs.
Time Intelligence in Analytics: Trends and Seasonality
Time intelligence for analysts, worked through two years of real daily bike-share data: why a 23% monthly fall was good news, smoothing daily noise with moving averages, year-to-date comparisons, seasonal indexes, weekday effects, and the partial-period trap that turned a 4.5% rise into a 48% fall.
Time Series Interview Questions for Data Science
Time series interviews test whether you respect time: no peeking at the future, honest baselines, and metrics that do not mislead. Seven questions answered on four years of real hourly electricity use: baselines, autocorrelation, what a stationarity test misses, shuffled cross-validation, a leaky feature and MAPE.