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Thursday, December 5, 2024

The ‘strawberrry’ drawback: Find out how to overcome AI’s limitations


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By now, giant language fashions (LLMs) like ChatGPT and Claude have develop into an on a regular basis phrase throughout the globe. Many individuals have began worrying that AI is coming for his or her jobs, so it’s ironic to see virtually all LLM-based methods flounder at an easy job: Counting the variety of “r”s within the phrase “strawberry.” They aren’t completely failing on the alphabet “r”; different examples embody counting “m”s in “mammal”, and “p”s in “hippopotamus.” On this article, I’ll break down the explanation for these failures and supply a easy workaround.

LLMs are highly effective AI methods skilled on huge quantities of textual content to grasp and generate human-like language. They excel at duties like answering questions, translating languages, summarizing content material and even producing inventive writing by predicting and setting up coherent responses based mostly on the enter they obtain. LLMs are designed to acknowledge patterns in textual content, which permits them to deal with a variety of language-related duties with spectacular accuracy.

Regardless of their prowess, failing at counting the variety of “r”s within the phrase “strawberry” is a reminder that LLMs will not be able to “considering” like people. They don’t course of the knowledge we feed them like a human would.

Dialog with ChatGPT and Claude in regards to the variety of “r”s in strawberry.

Nearly all the present excessive efficiency LLMs are constructed on transformers. This deep studying structure doesn’t immediately ingest textual content as their enter. They use a course of referred to as tokenization, which transforms the textual content into numerical representations, or tokens. Some tokens could be full phrases (like “monkey”), whereas others may very well be components of a phrase (like “mon” and “key”). Every token is sort of a code that the mannequin understands. By breaking the whole lot down into tokens, the mannequin can higher predict the following token in a sentence. 

LLMs don’t memorize phrases; they attempt to perceive how these tokens match collectively in several methods, making them good at guessing what comes subsequent. Within the case of the phrase “hippopotamus,” the mannequin would possibly see the tokens of letters “hip,” “pop,” “o” and “tamus”, and never know that the phrase “hippopotamus” is product of the letters — “h”, “i”, “p”, “p”, “o”, “p”, “o”, “t”, “a”, “m”, “u”, “s”.

A mannequin structure that may immediately have a look at particular person letters with out tokenizing them might probably not have this drawback, however for immediately’s transformer architectures, it isn’t computationally possible.

Additional, how LLMs generate output textual content: They predict what the following phrase shall be based mostly on the earlier enter and output tokens. Whereas this works for producing contextually conscious human-like textual content, it isn’t appropriate for easy duties like counting letters. When requested to reply the variety of “r”s within the phrase “strawberry”, LLMs are purely predicting the reply based mostly on the construction of the enter sentence.

Right here’s a workaround

Whereas LLMs may not be capable to “suppose” or logically purpose, they’re adept at understanding structured textual content. A splendid instance of structured textual content is pc code, of many many programming languages. If we ask ChatGPT to make use of Python to depend the variety of “r”s in “strawberry”, it would most probably get the proper reply. When there’s a want for LLMs to do counting or every other job which will require logical reasoning or arithmetic computation, the broader software program might be designed such that the prompts embody asking the LLM to make use of a programming language to course of the enter question.

Conclusion

A easy letter counting experiment exposes a elementary limitation of LLMs like ChatGPT and Claude. Regardless of their spectacular capabilities in producing human-like textual content, writing code and answering any query thrown at them, these AI fashions can not but “suppose” like a human. The experiment exhibits the fashions for what they’re, sample matching predictive algorithms, and never “intelligence” able to understanding or reasoning. Nonetheless, having a previous information of what sort of prompts work effectively can alleviate the issue to some extent. As the mixing of AI in our lives will increase, recognizing its limitations is essential for accountable utilization and sensible expectations of those fashions.

 Chinmay Jog is a senior machine studying engineer at Pangiam.

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