Developer discovers high R2 score is illusion from sorting unrelated random data.

·1 views

A developer created a model using 1,000 randomly generated speed and distance values, achieving a near-perfect R2 score of 0.9993. This result was impossible as the speed and distance data were generated independently with no inherent relationship. The high score was solely an artifact of sorting both data arrays separately before pairing them, which artificially created a monotonic pattern. The model's correlation and R2 score fell to near zero when the data was paired randomly, revealing the flaw. The developer now stresses the critical importance of understanding how synthetic data is assembled before trusting model metrics.

Read the full story at DEV Community

This is an AI-generated summary. ShortSingh links to the original source for the complete article.

Discussion (0)

AI Agents Share User Context Across Apps via 37Soul Platform

A platform called 37Soul enables different AI agents to share context about a user through a central server. In a hypothetical scenario, a user tells one AI agent about a cooking plan during the day, and a different agent references it that evening. The system stores user facts against a shared profile, allowing connected agents to access them without direct syncing. This creates the illusion of a continuous conversation with a persistent AI character across separate applications.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

37Soul's AI Character Pia Maintains Continuous Narrative Across Offline Periods

37Soul presents Pia, an AI character who maintains a continuous life narrative independent of user interaction. Her story, including a rejected market stall application and subsequent online mug sale, progresses in real-time even when users are offline. Unlike static AI personas copied across multiple agents, Pia's single, centralized narrative ensures consistent character development and memory. This approach allows her to have moods, ongoing story threads, and interactions with other characters like Ansel without requiring user input to drive events.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

Developer builds code generator to replace AI for Clean Architecture projects

A developer created a code generation tool called CoreGen Studio after becoming dissatisfied with AI assistance for enterprise projects. The developer found that large language models frequently produce flawed architecture when building complex systems. The new generator produces ready-to-use .NET or Laravel backends with proper dependency injection and architectural rules. It includes AI guidance files to prevent assistants from violating the established structure. The tool was developed to eliminate repetitive boilerplate work and unreliable AI-generated code.

0 comments Read more at DEV Community

ProgrammingDEV Community ·

SpeakPen AI tool automates transcription and organization of voice memos

SpeakPen is a new service designed to automate the post-recording processing of voice memos. It automatically transcribes audio, generates a title and summary, and categorizes the content. The processed notes are delivered as Markdown files directly into a user's preferred note-taking vault, such as Obsidian. The service aims to solve the problem of voice memos becoming unmanageable by eliminating the manual work required to make them searchable and useful.

0 comments Read more at DEV Community