Application and centralization of the grouping blockchain lies

Application Scenarios:

There are three categories of
Blockchain Public Blockchain, Private Blockchain, and Permissioned Blockchain. By
considering the section III, it is good to use the corresponding consensus
algorithm in different situations.

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 A public blockchain is the one that is accessible
to all the people in an open and public area. Everybody can become one of the
nodes and make contributions to get the prizes following the rules. There are
no trust dependent relationships between the nodes. Public blockchain is totally
open and distributed.  All transactions
on the public blockchain can never be altered. 
PoW, PoS and DPoS consensus algorithms 
are communal picks of public blockchain.

Private Blockchain is the one
where the owner of the blockchain has the maximum right to alter the information.
The remaining nodes have the partial access to read. In comparison to the
public blockchain,  the  private 
blockchain  has  the  features  of easy 
alteration  and  less  transaction  cost.  Private
Blockchain is useful for closed networks such as the intranet. It is more significant
to solve the crash faults  than  Byzantine 
faults. PBFT consensus mechanisms can be used on the basis of network

Permissioned blockchain is the
one that is composed of many parties and the key nodes are pre-specified by the
members. The members of the permissioned blockchain do not completely trust the
others. Each member chooses its own consensus node on the basis of the rules.  Transactions require to be accepted by most consensus
nodes. The level of honesty  and  centralization  of  the
grouping  blockchain  lies between 
the  public  and 
private  blockchain. The  permissioned blockchain  is  appropriate  for 
the  semi-closed  network, 
which  is made  by  different  enterprises. The best option is to use PBFT
in this type of Blockchain.