Unit 2 search-enginesand types of search engine

Search engines

1. Search Engines

2. Search engines are powerful tools that
help users find information on the
internet. They use algorithms to crawl
and index web pages, providing
relevant results to user queries. This
presentation will explore the different
types of search engines and their
unique features.
INTRODUCTION TO SEARCH ENGINES

3. Crawler-based search engines, such as Google and Bing, use automated software
programs called spiders to crawl the web and index web pages. These engines
prioritize fresh and relevant content and use complex algorithms to rank search
results.
CRAWLER-BASED SEARCH ENGINES

4. Human-powered directories, like Yahoo Directory, rely on human
editors to organize and categorize web content. Users can navigate
through a hierarchical structure to find information, making these
directories valuable for specific topics and niche industries.
HUMAN-POWERED DIRECTORIES

5. Meta search engines, such as
Dogpile and Ixquick, aggregate
results from multiple search
engines and present them to
users. By combining data from
various sources, these engines
aim to provide a
comprehensive view of search
results, offering diverse
perspectives.
META SEARCH ENGINES

6. Vertical search engines focus on
specific industries or content types,
such as images, videos, or news.
These engines provide specialized
results tailored to the user's search
intent, offering a more targeted
experience for specific information
needs.
VERTICAL SEARCH
ENGINES

7. Real-time search engines, like
Twitter Search and Google
Realtime, prioritize up-to-the-
minute information from social
media, news sites, and other
sources. Users can access the
latest updates and trending topics
in real time, making these engines
valuable for current events and
trends.
REAL-TIME SEARCH ENGINES

8. Mobile search engines, such
as Google Mobile and Yahoo
Mobile, are optimized for
smartphone and tablet users.
These engines prioritize
mobile-friendly content and
may offer location-based
results, catering to the on-
the-go needs of mobile
users.
MOBILE SEARCH
ENGINES

9. Voice search engines, like Siri
and Alexa, enable users to
perform searches using voice
commands. These engines
use natural language
processing to understand
spoken queries and provide
spoken responses, offering a
hands-free search experience.
VOICE SEARCH
ENGINES

10. Visual search engines, such
as Google Lens and Pinterest
Lens, allow users to search
using images rather than text.
These engines use image
recognition technology to
analyze and identify objects,
offering a visual search
experience for users.
VISUAL SEARCH ENGINES

11. Personalized search engines, like
Google Personalized Search, tailor
search results based on a user's
search history and preferences.
These engines aim to provide
relevant and customized results,
reflecting the user's individual
interests and behavior.
PERSONALIZED SEARCH
ENGINES

12. As search engines continue to
evolve, they face challenges
related to privacy, fake news,
and algorithm bias. The future
may see advancements in AI-
powered search, semantic
search, and personalized AI
assistants that revolutionize
the search experience.
CHALLENGES AND FUTURE
TRENDS