Ghost in the Machine: my smart home writes down what happens after dark

说明与用途

该系统将智能家居传感器日志转换为夜间故事，局部检测异常并朗读。

问题

How to turn a smart home’s sensor logs into a narrative that reveals unusual nighttime events without exposing private data.

结果

The system accurately flags unusual events (e.g., bedroom door opening at 02:19 while both occupants are still in bed) and produces a coherent, timestamped story that can be listened to or viewed in a replay UI.

工作流

• Export Home Assistant history to a CSV file
• Run TabPFN to score each event for anomaly using a 40‑night simulated baseline
• Flag events with score ≥0.95 as potential ghosts
• Feed flagged events to Gemma 4 with a prompt that requires citing real log lines
• Gemma 4 outputs a narrative with timestamps and sensor names
• Piper TTS reads the narrative aloud
• Optional: replay the log in the web UI highlighting anomalous lines

证据

TabPFN finds the ghosts. A real Home Assistant export doesn’t come labelled. Each event becomes a row of generic features… TabPFN, an open‑weight tabular foundation model, takes 40 labelled simulated nights as context and scores a new night in a single forward pass, with no training loop.

来源

Gemma 4 tells the story. The flagged readings go to the narrator tagged [anomaly 0.97]. The prompt’s key rule: every eerie beat must cite a real log line by time and sensor, and the model may not invent readings.

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Piper reads it aloud. Open‑source neural TTS, fully offline, slowed down a little and with times spoken as words.

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