# Technical Document Extraction: Performance Speedup Analysis
## Chart Type
Bar chart comparing performance speedup percentages across different PRAC categories and computational thresholds.
## Axes Labels
- **X-axis**: PRAC categories (`PRAC-1`, `PRAC-2`, `PRAC-4`, `All`)
- **Y-axis**: `Performance Speedup (%)` (range: 0–8.5%, increments of 2%)
## Legend
- **Title**: `Threshold`
- **Entries**:
- `64` (blue)
- `128` (orange)
- `256` (green)
- `Geomean` (gray)
## Spatial Grounding
- Legend positioned at the **top-right** of the chart.
- Colors of bars match legend entries exactly (e.g., blue = 64, orange = 128, etc.).
## Data Points and Trends
### PRAC-1
- **64**: 7.1% (blue bar, lowest value)
- **128**: 7.8% (orange bar, moderate increase)
- **256**: 8.0% (green bar, peak)
- **Geomean**: 7.7% (gray bar, slight decline from 256)
### PRAC-2
- **64**: 7.9% (blue bar, near peak)
- **128**: 8.0% (orange bar, stable)
- **256**: 8.0% (green bar, stable)
- **Geomean**: 8.0% (gray bar, flat)
### PRAC-4
- **64**: 8.4% (blue bar, highest value)
- **128**: 8.3% (orange bar, slight decline)
- **256**: 8.2% (green bar, further decline)
- **Geomean**: 8.3% (gray bar, recovers slightly)
### All
- **Geomean**: 8.0% (gray bar, singular value)
## Key Observations
1. **Threshold Impact**:
- Higher thresholds (256) generally yield higher speedups than lower thresholds (64, 128) in most PRAC categories.
- Exceptions: PRAC-1 shows a slight decline from 256 to Geomean (8.0% → 7.7%).
2. **PRAC Category Performance**:
- `PRAC-4` achieves the highest speedup (8.4% at 64 threshold).
- `PRAC-1` has the lowest baseline speedup (7.1% at 64 threshold).
3. **Geomean Consistency**:
- `Geomean` values stabilize at ~8.0% across all categories except PRAC-1.
## Missing Elements
- No explicit chart title (only legend title "Threshold" is present).
- No secondary y-axis or annotations beyond bar labels.
## Language
All text is in **English**. No non-English content detected.