Free module · Machine learning & adaptive decisions
Alternative Data: Measurement, Text & Incremental Value
Turn an unusual dataset into a testable measurement before calling it an edge.
text · event timing · panels · measurement error · incremental forecasts · data costs
The building blocks
News, receipts, satellite observations, shipping records and web activity measure different parts of economic behavior. A useful signal begins with a defensible measurement chain.
- Define the economic quantity and how the source observes it.
- Preserve availability, transformations and sample coverage.
- Test incremental decisions after realistic costs and failure scenarios.
Lessons in this module
- From a sampled panel to a population estimate
- A reproducible dictionary score for text
- An event return needs a predeclared benchmark
- Availability delays and signal decay
- Noisy proxies and attenuation
- Measure improvement against a frozen baseline
- From forecast accuracy to a costed decision
- A data investment includes coverage, access and ongoing costs
Practice and apply
- Correct known group composition — Population shares .75/.25, sampled spending means 100/200 currency per customer per month.
- Cost two half-lives of delay — Expected edge 20 basis points, half-life 60 seconds, additional delay 120 seconds.
- Evaluate the annual data process — Incremental after-trading-cost value 60000; license 20000; annualized engineering 15000; operations 10000, all annual currency.
Work through the practice exercises · Quant development tools