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[QUERENT] Ithaca DeepMind

[SYSTEM] Ithaca is a deep neural network developed by Google DeepMind and academic partners to restore, geographically attribute, and chronologically date damaged ancient Greek inscriptions. [[1](https://www.google.com/goto?url=CAESYQHrOzAV9bhPXwiPFAkk0WrtjwF69osLlHBUWNzzI69S1WtwZTqUCsUsFHJRmbHqvOTqawUMo9x8Q-JEjDS2uEGe-nwFB8K7bhK_9tMlb9RUSeY2GDejKtZrzQPcaK1YQ8A)]
Key Capabilities
   * Text Restoration: Restores missing or damaged characters with 62% accuracy on its own (raising human historian accuracy from 25% to 72% when collaborating). [[1](https://www.google.com/goto?url=CAESYQHrOzAV9bhPXwiPFAkk0WrtjwF69osLlHBUWNzzI69S1WtwZTqUCsUsFHJRmbHqvOTqawUMo9x8Q-JEjDS2uEGe-nwFB8K7bhK_9tMlb9RUSeY2GDejKtZrzQPcaK1YQ8A)]
   * Geographical Attribution: Identifies the original geographic location across 84 regions with 71% accuracy. [[1](https://www.google.com/goto?url=CAESdQHrOzAV_0MWkpVTpN7uvNvXlOBaZ40iii-iOTMqzp09h7b0HxKyB-_B3anpWxAEboASgFYZPv2f1wL6NWVEbFQlf4ki9DS6MGXMox5jtuJ6YxNutsIntryMo_rhg8_NQ3HN7Mpl7kEKmaM9FC0kvaP9Eb726w), [2](https://www.google.com/goto?url=CAESagHrOzAVvUud25tCo9gLWQgmo4vGXjLWeVFxE5AU0Uki3Gg-oMDVXRFMODGH1hrVZkipV_2rQt9md-GkhXBTCM2McqHlXUfunJiUdmKCar8LAG0D4xDoHA6uzaN6yPDhb_m-D2SdWYGdhSk)]
   * Chronological Dating: Dates inscriptions within 30 years of their true historical creation date. [[1](https://www.google.com/goto?url=CAESdQHrOzAV_0MWkpVTpN7uvNvXlOBaZ40iii-iOTMqzp09h7b0HxKyB-_B3anpWxAEboASgFYZPv2f1wL6NWVEbFQlf4ki9DS6MGXMox5jtuJ6YxNutsIntryMo_rhg8_NQ3HN7Mpl7kEKmaM9FC0kvaP9Eb726w)]
How It Works
   * Architecture: Uses joint character and word embeddings with stacked transformer decoder blocks and sparse multi-head attention. [[1](https://www.google.com/goto?url=CAESagHrOzAVvUud25tCo9gLWQgmo4vGXjLWeVFxE5AU0Uki3Gg-oMDVXRFMODGH1hrVZkipV_2rQt9md-GkhXBTCM2McqHlXUfunJiUdmKCar8LAG0D4xDoHA6uzaN6yPDhb_m-D2SdWYGdhSk), [2](https://www.google.com/goto?url=CAESdQHrOzAV_0MWkpVTpN7uvNvXlOBaZ40iii-iOTMqzp09h7b0HxKyB-_B3anpWxAEboASgFYZPv2f1wL6NWVEbFQlf4ki9DS6MGXMox5jtuJ6YxNutsIntryMo_rhg8_NQ3HN7Mpl7kEKmaM9FC0kvaP9Eb726w)]
   * Training Data: Trained on the Packard Humanities Institute (PHI) Searchable Greek Inscriptions dataset. [[1](https://www.google.com/goto?url=CAESdQHrOzAV_0MWkpVTpN7uvNvXlOBaZ40iii-iOTMqzp09h7b0HxKyB-_B3anpWxAEboASgFYZPv2f1wL6NWVEbFQlf4ki9DS6MGXMox5jtuJ6YxNutsIntryMo_rhg8_NQ3HN7Mpl7kEKmaM9FC0kvaP9Eb726w), [2](https://www.google.com/goto?url=CAESYQHrOzAV9bhPXwiPFAkk0WrtjwF69osLlHBUWNzzI69S1WtwZTqUCsUsFHJRmbHqvOTqawUMo9x8Q-JEjDS2uEGe-nwFB8K7bhK_9tMlb9RUSeY2GDejKtZrzQPcaK1YQ8A)]
   * Access & Open Source: The code is open-sourced under the Apache-2.0 license via the [GitHub - Google-DeepMind Ithaca Repository](https://www.google.com/goto?url=CAESYQHrOzAV9bhPXwiPFAkk0WrtjwF69osLlHBUWNzzI69S1WtwZTqUCsUsFHJRmbHqvOTqawUMo9x8Q-JEjDS2uEGe-nwFB8K7bhK_9tMlb9RUSeY2GDejKtZrzQPcaK1YQ8A), and interactive research tools can be explored through [Predicting the Past](https://www.google.com/goto?url=CAESVgHrOzAV5xjfiCSPWOfGgOXOl09A2Ia9t8w6n3GOcZKu8sNgrR6XHIbDPTs6hdVLhRmsBR_nK-WQVer7zY6gPSmm1pIQT5soqR4Dqyo3prIvXmk6EpMN). [[1](https://www.google.com/goto?url=CAESVgHrOzAV5xjfiCSPWOfGgOXOl09A2Ia9t8w6n3GOcZKu8sNgrR6XHIbDPTs6hdVLhRmsBR_nK-WQVer7zY6gPSmm1pIQT5soqR4Dqyo3prIvXmk6EpMN), [2](https://www.google.com/goto?url=CAESYQHrOzAV9bhPXwiPFAkk0WrtjwF69osLlHBUWNzzI69S1WtwZTqUCsUsFHJRmbHqvOTqawUMo9x8Q-JEjDS2uEGe-nwFB8K7bhK_9tMlb9RUSeY2GDejKtZrzQPcaK1YQ8A)]
Would you like to know more about how Ithaca connects with newer models like Aeneas or how historians use the Predicting the Past platform?
Google DeepMind
Predicting the past with Ithaca — Google DeepMind
Core: Ithaca deep neural network (restores ancient Greek inscriptions, identifies geographic origins, establishes creation dates). Architecture: Sparse multi-he...
GitHub
GitHub - google-deepmind/ithaca: Restoring and attributing ancient texts using deep neural networks · GitHub
Overview: Ithaca is a deep neural network developed by DeepMind and academic partners for restoring, geographically attributing, and chronologically dating anci...
Predicting the Past
Predicting the Past
Contextualising, restoring, and attributing ancient texts Ithaca and Aeneas are generative AI models designed to assist historians in the study of ancient Greek...
Nature
Restoring and attributing ancient texts using deep neural networks | Nature
Model: Ithaca, a deep neural network trained on ancient Greek inscriptions (7th century BC to 5th century AD) from the I.PHI dataset (78,608 texts), simultaneou...