AIER Schedule vs. Tangier: optimization and fatigue analytics
Both optimize. Only one scores the result for circadian fatigue and shows its work.
Tangier is an optimization-first scheduler with a long track record in academic and hospital-based groups. Unlike distribution tools, it genuinely builds schedules.
The difference is what the optimizer is optimizing for, and what you can see afterward. AIER treats circadian fatigue as a scored, published output — not an internal constraint you have to trust.
Side by side
| Capability | Tangier | AIER Schedule | Advantage |
|---|---|---|---|
| Automated schedule generation | Yes | Yes (Intelligence tier and above) | |
| Fatigue scoring you can read | Constraints only | Published CAI per physician, per month, with penalty breakdown | |
| Evidence base published | Not published | Public bibliography and science page behind the model | |
| Rule configuration | Vendor-assisted setup | Self-serve, plain-language rules | |
| Academic / resident scheduling | Strong heritage | Focused on attending ED coverage | |
| Import from your current file | Onboarding process | Direct Excel and PDF upload | |
| Per-physician calendar feeds | Available | Native, with in-calendar swap actions |
Maintained by AIER Technologies from publicly available information and customer conversations. Tell us if something is out of date and we will correct it.
Choose Tangier if…
- • Complex academic environments with residents, rotations, and teaching requirements.
- • You want a vendor to configure and maintain the rule set for you.
Choose AIER Schedule if…
- • You want the fatigue math visible and defensible to your group, not hidden in a solver.
- • You want to change rules yourself, in plain language, without a support ticket.
- • Attending-level ED coverage with nights, swaps, and FTE targets is the core problem.
Migrating
Upload a recent month as Excel or PDF. AIER scores it and shows the top penalties driving fatigue risk before you change anything.
Score your current scheduleCommon questions
What is a Circadian Alignment Index?
A 0 to 100 score summarizing how well a schedule respects circadian biology — quick turnarounds after nights, isolated night shifts, rotation direction, and recovery time. Higher is better; 90 and above is low fatigue risk.
Does AIER Schedule do true optimization?
Yes. A heuristic builds a strong starting schedule, then a constraint solver improves it within a bounded time window before results are scored.