## Scatter Plot Matrix: Reasoning Skill Embeddings
### Overview
The image displays a 2x2 grid of scatter plots visualizing the clustering of different reasoning skills within various embedding spaces. A shared legend on the right maps specific symbols and colors to 13 distinct reasoning skill categories. The plots compare how these skills group based on different representations: combined question and rationale skill, question skill alone, raw question embeddings, and raw rationale embeddings.
### Components/Axes
* **Titles:**
* Top-Left Plot: "Reasoning skill of (Q, R)"
* Top-Right Plot: "Reasoning skill of Q"
* Bottom-Left Plot: "Raw question embedding"
* Bottom-Right Plot: "Raw rationale embedding"
* **Legend (Positioned to the right of the top-right plot):**
* Title: "Reasoning skills"
* Entries (Symbol - Label):
1. Black Circle (●) - "Compute statistics"
2. Purple Downward Triangle (▼) - "Compute rate of change"
3. Blue 'x' (x) - "Compute money cost"
4. Blue Circle (●) - "Filter tree leaves"
5. Cyan Downward Triangle (▼) - "Addition/subtraction"
6. Cyan 'x' (x) - "Search minimum/maximum"
7. Green Circle (●) - "Multiplication"
8. Green Downward Triangle (▼) - "Filter table entries"
9. Light Green 'x' (x) - "Compute probability"
10. Yellow Circle (●) - "Shortage or surplus?"
11. Orange Downward Triangle (▼) - "Reason time schedule"
12. Red 'x' (x) - "Compare numbers"
13. Red Circle (●) - "Others"
* **Axes:** None of the four scatter plots have labeled X or Y axes or numerical scales. They are abstract 2D projections of embedding spaces.
### Detailed Analysis
**1. Reasoning skill of (Q, R) [Top-Left Plot]:**
* **Trend/Clustering:** Skills form distinct, separated clusters.
* **Spatial Distribution:**
* **Top-Left Quadrant:** A dense cluster of green circles ("Multiplication") and green downward triangles ("Filter table entries").
* **Top-Center:** A cluster of orange downward triangles ("Reason time schedule").
* **Top-Right Quadrant:** A dense cluster of black circles ("Compute statistics").
* **Center-Left:** A large, dispersed cluster dominated by blue 'x's ("Compute money cost").
* **Center:** Scattered cyan 'x's ("Search minimum/maximum") and blue circles ("Filter tree leaves").
* **Center-Right:** A cluster of purple downward triangles ("Compute rate of change").
* **Bottom-Left:** A small cluster of light green 'x's ("Compute probability").
* **Bottom-Center:** A small cluster of yellow circles ("Shortage or surplus?").
* **Isolated Points:** A few red 'x's ("Compare numbers") and red circles ("Others") are scattered sparsely.
**2. Reasoning skill of Q [Top-Right Plot]:**
* **Trend/Clustering:** Clusters are more dispersed and less distinct than in the (Q,R) plot.
* **Spatial Distribution:**
* **Top-Left Quadrant:** A cluster of purple downward triangles ("Compute rate of change").
* **Top-Center:** A dense cluster of black circles ("Compute statistics").
* **Top-Right Quadrant:** A large, dispersed cluster of blue 'x's ("Compute money cost").
* **Center:** Scattered cyan 'x's ("Search minimum/maximum"), blue circles ("Filter tree leaves"), and green downward triangles ("Filter table entries").
* **Bottom-Center:** A cluster of orange downward triangles ("Reason time schedule").
* **Bottom-Right Quadrant:** A cluster of green circles ("Multiplication").
* **Isolated Points:** A few red 'x's ("Compare numbers") and a red circle ("Others") are present.
**3. Raw question embedding [Bottom-Left Plot]:**
* **Trend/Clustering:** Shows two primary, large clusters with some internal structure.
* **Spatial Distribution:**
* **Left Cluster:** A dense, vertical cluster containing a mix of blue 'x's ("Compute money cost"), cyan 'x's ("Search minimum/maximum"), blue circles ("Filter tree leaves"), green downward triangles ("Filter table entries"), and scattered points from other categories.
* **Right Cluster:** A dense cluster containing black circles ("Compute statistics"), purple downward triangles ("Compute rate of change"), green circles ("Multiplication"), and yellow circles ("Shortage or surplus?").
* **Bottom:** A distinct, small cluster of orange downward triangles ("Reason time schedule").
* **Isolated Points:** Red 'x's ("Compare numbers") and red circles ("Others") are scattered.
**4. Raw rationale embedding [Bottom-Right Plot]:**
* **Trend/Clustering:** Shows a more continuous, elongated distribution compared to the other plots.
* **Spatial Distribution:**
* **Top-Right to Bottom-Left Diagonal:** A broad, dispersed band containing a mix of many skills, notably blue 'x's ("Compute money cost"), cyan 'x's ("Search minimum/maximum"), and green circles ("Multiplication").
* **Top-Left Quadrant:** A cluster of black circles ("Compute statistics").
* **Center-Left:** A cluster of purple downward triangles ("Compute rate of change").
* **Bottom-Center:** A cluster of blue circles ("Filter tree leaves").
* **Bottom-Left Quadrant:** A cluster of light green 'x's ("Compute probability").
* **Isolated Points:** Red 'x's ("Compare numbers"), red circles ("Others"), and yellow circles ("Shortage or surplus?") are scattered.
### Key Observations
1. **Cluster Coherence:** The "Reasoning skill of (Q, R)" plot shows the most distinct and separated clusters for each skill, suggesting the combined representation best disentangles these reasoning abilities.
2. **Skill Similarity:** "Compute statistics" (black circles) and "Compute rate of change" (purple triangles) often cluster near each other, implying similarity in their required reasoning.
3. **Dominant Skills:** "Compute money cost" (blue 'x') and "Search minimum/maximum" (cyan 'x') are highly prevalent and form large, dispersed clusters across multiple plots.
4. **Embedding Shift:** The transition from "Raw question embedding" to "Raw rationale embedding" shows a significant change in the spatial organization of skills, indicating the rationale provides different or additional information.
5. **Outliers:** The "Others" (red circle) and "Compare numbers" (red 'x') categories are consistently sparse and scattered, suggesting they are either rare or not well-defined within this embedding space.
### Interpretation
This visualization demonstrates how different reasoning skills are represented in an AI model's internal embedding space. The clear clustering in the "Reasoning skill of (Q, R)" plot indicates the model has learned to distinguish these skills when considering both the question and its rationale. The proximity of certain clusters (e.g., statistics and rate of change) suggests the model perceives an underlying relationship between these tasks. The stark difference between the raw question and rationale embeddings highlights that the rationale (the step-by-step reasoning) carries distinct semantic information crucial for task classification. The dispersion of skills like "Compute money cost" may indicate it is a broad category encompassing varied sub-tasks. Overall, the plots provide evidence that the model's internal representations align with human-defined reasoning skill categories, with the combined (Q,R) representation being the most discriminative.