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Leveraging Deep Learning for Solving Morphological Analogies: From Retrieval to Generation


Alapfogalmak
A deep learning framework is proposed to effectively detect and solve morphological analogies, outperforming symbolic approaches across multiple languages.
Kivonat

The paper presents a deep learning framework for solving morphological analogies, which consists of two main components: embedding models and analogy processing models.

The embedding models include a CNN-based model that learns to detect key morphological patterns from word characters, and an autoencoder (AE) model that learns to encode words into embeddings and decode them back.

The analogy processing models include the Analogy Neural Network for classification (ANNc), which detects whether a given quadruple forms a valid analogy, and the Analogy Neural Network for retrieval/generation (ANNr), which solves analogical equations by either retrieving or generating the solution word.

The framework leverages data augmentation techniques to ensure the models learn the formal properties of analogical proportions. Extensive experiments are conducted on the Siganalogies dataset covering over 16 languages, demonstrating the framework's superior performance compared to symbolic approaches.

The combination of the ANNr and AE models outperforms other approaches in almost all cases. The ANNc model also achieves competitive or better performance than the 3CosMul baseline as a retrieval method.

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Statisztikák
Morphological analogies cover a wide range of languages, including Spanish, German, Finnish, Russian, Turkish, Georgian, Navajo, Arabic, Hungarian, and Maltese. The Siganalogies dataset is built upon the Sigmorphon 2016, Sigmorphon 2019, and Japanese Bigger Analogy Test Set (JBATS) datasets. The dataset contains pairs of words sharing the same morphological transformation, which can be used to generate analogical proportions.
Idézetek
"Analogical inference is a remarkable capability of human reasoning, and has been used to solve hard reasoning tasks." "Analogy based reasoning (AR) has gained increasing interest from the artificial intelligence community and has shown its potential in multiple machine learning tasks such as classification, decision making and recommendation with competitive results."

Mélyebb kérdések

How can the framework be extended to handle derivational morphology in addition to inflectional morphology?

To extend the framework to handle derivational morphology, we can modify the data preprocessing step to include pairs of words that undergo derivational transformations. This would involve creating analogies between words that share the same derivational process, similar to how inflectional analogies are created. By expanding the dataset to include derivational transformations, the models can be trained to recognize and generate derivational analogies. Additionally, the embedding models can be adjusted to capture the nuances of derivational morphology. Since derivational transformations often involve more complex changes to the base word compared to inflectional transformations, the embedding models may need to be more sophisticated to capture these variations. This could involve using deeper neural network architectures or incorporating additional linguistic features specific to derivational morphology. Furthermore, the analogy processing models, such as ANNc and ANNr, can be trained on the expanded dataset containing derivational analogies. By fine-tuning these models on derivational data, they can learn to detect and solve derivational analogies effectively. Overall, by incorporating derivational morphology into the framework at each stage, the system can be extended to handle both inflectional and derivational analogies seamlessly.

What are the limitations of the axiomatic setting used in the framework, and how can they be addressed?

One limitation of the axiomatic setting used in the framework is its reliance on strict formal rules to define analogical proportions (APs). While these axioms provide a structured framework for reasoning about analogies, they may oversimplify the complexity of linguistic phenomena, especially in languages with irregular morphology or non-standard transformations. To address this limitation, the framework can be enhanced by incorporating more flexible and adaptive models that can capture the nuances of real-world linguistic data. For example, instead of relying solely on predefined axioms, the models can be trained on a diverse range of linguistic examples to learn the patterns and variations in morphological transformations. This data-driven approach can help the models generalize better to handle irregularities and exceptions in derivational and inflectional morphology. Additionally, introducing a mechanism for probabilistic reasoning can help the models deal with uncertainty and ambiguity in analogical proportions. By incorporating probabilistic models or uncertainty estimates into the framework, it can better handle cases where the strict axioms may not apply perfectly. Furthermore, considering a more holistic approach that combines symbolic reasoning with neural network-based learning can overcome the limitations of the axiomatic setting. By integrating the strengths of both approaches, the framework can achieve a more comprehensive understanding of morphological analogies.

Can the framework be applied to other types of analogies beyond morphological analogies, such as semantic or visual analogies?

Yes, the framework can be adapted to handle other types of analogies beyond morphological analogies, such as semantic or visual analogies. The key lies in modifying the data representation, embedding models, and analogy processing models to suit the specific characteristics of the new analogy types. For semantic analogies, the dataset can be curated to include word pairs that exhibit semantic relationships, such as synonyms, antonyms, or hypernyms. The embedding models can be trained to capture semantic similarities and differences between words, enabling the models to recognize semantic analogies effectively. Similarly, for visual analogies, the dataset can consist of image pairs that share visual relationships, such as rotations, translations, or transformations. The embedding models in this case would need to be tailored to process visual data, such as using convolutional neural networks (CNNs) for image embeddings. The analogy processing models can then be adjusted to handle semantic or visual analogies by training them on the respective datasets. By fine-tuning the models on semantic or visual analogy data, they can learn to detect and solve analogies in these domains. Overall, with appropriate modifications to the data and models, the framework can be extended to address a wide range of analogy types beyond morphological analogies.
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