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1081 CDPS G1 [PR] Chapter 3 – Architecture (Beyond Core interaction…

- - - - Algorithms
        
        search query
    - - consumer who consumes value
        
        Side- switching
        users engage in side switiching easily and repeatedly
      - Producer who create the value
    - - exchange of goods & services
        
        exchange of currency
        
        money
        
        reputation、influence、attention
        
        mutually rewarding
      - exchange of information
      - Participants ceate unit of value
        
        Platform only are Information factory
        
        like quality control
  - - - easily to create and exchange
      - reduce barriers to usage
      - increase barriers to make users trustful
        
        Sittercity
    - - data acquisition
      - analysis methods
        
        Increasing important!
    - - Challenge 1: 🐔 chicken 🥚 egg problem
      - Challenge 2: keep user interest
        
        single-user feedback loop
        
        Youtube
        
        recommended video
        
        The interact with youtuber, you can also like, subscribe, and open notifications.
        
        multi-user feedback loop
- - - - subsystems can be designed independently
      - through standard interface to connect to the rest of the sysytem
      - adhere to overall design rules
    - - Personal computer industry :computer:
      - APIs(Application Programming Interfaces)
  - - - Create better user experience
        
        incorporate into the core platform
      - Simplize system
        
        consist stable core layer
    - - bloatware
        
        become complicated, slow and inefficient thoughtless accretion of features
      - goatware
        
        ex:Google Vista
        
        eat all a system's resources
  - - - Leave a little blank
        
        Users lead the way to design