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The Internet Shopping World

The Internet Shopping World. And You. Search Agent (web). A search agent scours the entire web. Constantly Evolving and Expanding. Types of Web Search Agents. Google Amazon Yahoo EBay Wikipedia. Perception Differences. Humans see one page in native language

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The Internet Shopping World

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  1. The Internet Shopping World And You

  2. Search Agent (web) • A search agent scours the entire web. • Constantly Evolving and Expanding

  3. Types of Web Search Agents • Google • Amazon • Yahoo • EBay • Wikipedia

  4. Perception Differences • Humans see one page in native language • Computers see multiple pages in code

  5. Tasks of the Search Agent • Find relevant products • Buying websites example • Gather all relevant stores (e.g. Amazon, EBay, Newegg) • Relative Product Types Relevant (page, url, query) ^ offer (page)

  6. Relevant (page, url, query) E store, home, store E OnlineStores ^ Homepage (store, home) ^ link (url) ^ page = getpage (url) • Determines link is relevant to search • Relevant text for queries • Query is “laptops” thus Laptop Computers is the category. “Computer” is the super category and “lightweight” is a subcategory Name (string, category) Name (“laptops”, Laptop Computers)

  7. Comparing Agent • After searched complete the next job lies with the comparing agent • Information extracted from pages using wrappers • User-determined qualifiers must be met Laptop Computers ^ offer E Product Offer ^ screen size ^ screen type ^ memory ^ cpu speed ^ hard drive capactiy ^ price ^ etc.

  8. A : 2.4 GHz, 1 GB RAM, 120 GB HDD, $2100 B : 2.2 GHz, 512 MB RAM, 80 GB HDD, $1500 C : 2.2 GHz, 512 MB RAM, 80 GB HDD, $1600 • Comparison • B is better than C making C lower relevance than B

  9. Fin

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