Queried by: developerssubnet ownersanalytics
The Big Picture
AdjustmentAlpha controls how aggressively costs respond to demand. Higher alpha = faster adjustments, more volatile costs. Lower alpha = slower, smoother adjustments. It's the smoothing factor in the exponential adjustment formula.
Why This Matters
How volatile are registration costs? AdjustmentAlpha determines this. High alpha means costs spike quickly with demand; low alpha means gradual changes.
Example Scenario
Query AdjustmentAlpha(netuid=1) returns the adjustment sensitivity parameter. Combined with demand data, you can model expected cost changes.
Common Questions
- What's a typical value?
- Varies by subnet design. Higher values for subnets wanting responsive pricing, lower for subnets wanting stable costs.
Use Cases
- Understand how quickly costs adjust
- Model registration cost dynamics
- Research difficulty adjustment algorithms
- Design subnet economic parameters
- Debug unexpected cost changes
From Chain Metadata
MAP ( netuid ) --> adjustment_alpha
Purpose & Usage
Purpose
Control adjustment sensitivity - how aggressively costs respond to demand changes.
Common Query Patterns
- Query by netuid
- Research adjustment dynamics
- Model cost predictions
Query Keys
| # | Name | Type | Description |
|---|---|---|---|
| 1 | netuid | u16 | netuid (u16, hashed key component) |
Stored Value
Relationships
Modified By
Related Events
Code Examples
import { createClient, Binary } from "polkadot-api";
import { getWsProvider } from "polkadot-api/ws";
import { sub } from "@polkadot-api/descriptors"; // generated by: npx papi add sub -w wss://entrypoint-finney.opentensor.ai:443
const client = createClient(getWsProvider("wss://entrypoint-finney.opentensor.ai:443"));
const api = client.getTypedApi(sub);
// Query AdjustmentAlpha storage
const netuid = 1;
const result = await api.query.SubtensorModule.AdjustmentAlpha.getValue(netuid);
console.log("AdjustmentAlpha:", result);Version History
v126 block 806,011 Added
v149 block 3,014,339 Internal re-bind
v166–v194 · runtime versions skipped on chain (never deployed)
v195 block 3,791,350 Internal re-bind
v278–v289 · runtime versions skipped on chain (never deployed)
v290 block 5,947,548 Internal re-bind Current
Runtime Info
View Source- Pallet
- SubtensorModule
- Storage Kind
- Map
- First Version
- v126
- Current Version
- v411