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Facebook develops algorithms to tackle offenders

Innovations will track the behaviour of users and warn others if the user resorts to suspicious acti

The algorithms also aim to identify the members who have had many declined friend requests or have a large proportion of friends of one gender.

On Monday, the social network site launched a campaign to improve reporting procedure for suspicious online activity and a 24/7 police hotline. The photograph filter in the network will also scan for objectionable images.

Facebook's review team would handle users who seem persistently aggressive or are found to be chasing a particular age or gender group. Users who resort to serious offences such as child porn would be banned immediately.

Facebook analyses the actions of users and compares it to an average set of actions. If the site finds that a user's online behaviour is too far from normal mode, it will take appropriate action, the company officials have said.