Update ollama-chat.adoc

[shahbazaamir]

• Updated Docs , added command to view the available models in Ollama
• Improved the response time of Integration test by skipping the delete of additional models , this step is controlled by the environment variable PERSIST_MODELS , set it as true if you want to avoid deleting and downloading of models like tinyllama. This will help in reducing the overall development and testing time for consecutive runs with minor modifications to the Test class.

export PERSIST_MODELS=true

For example, the first run takes 01:24 min , since the model has to downloaded , the following runs will take 4.088 s.

• Added Test cases to compare the similarity of the embeddings , similar items will have higher the cosine similarity when compared to non similar items

Keywords Comparison	Cosine Similarity from Embeddings	Comments
apple vs apple	1	Identical
apple vs banana	0.4239149097769852	More similar compared to others
apple vs orange	0.37267152451937946	Similar
apple vs train	0.19252728099555297	Least Similar
apple vs bus	0.21013765197467324	Less similar
apple vs taxi	0.2941340746684272	Less similar
train vs apple	0.19252728099555297	Least Similar
train vs banana	0.2739046533048044	Less similar
train vs orange	0.2620855357953212	Less similar
train vs train	1	Identical
train vs bus	0.4741106221306781	More similar compared to others
train vs taxi	0.4731519375526629	Similar

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