Competition To Identify Sexual Predators In Chat Logs 273
An anonymous reader writes "Researchers from the University of Lugano, Switzerland, and other universities from the U.S. and Europe organize a competition to automatically identify sexual predators in chat logs. The task is described as: 'The goal of this sub-task is to identify classes of authors, namely online predators. You will be given chat logs involving two (or more) people and have to determine who is the one trying to convince the other participants(s) to provide some sexual favor. You will also need to identify the particular conversation where the person exploits his bad behavior.' Their data set covers hundreds of chat logs with dozens of true positives (i.e., chats where one is trying to hit on another)."
Re:Ummm (Score:4, Informative)
Well, they say it's a sub-task. Many places allow anyone older than 13 (or rather, who say they're 13 due to COPPA) to sign up. Identifying who is trying to solicit sexual favors from self-identified minors - particularly by self-identified adults - and yes people are that stupid - doesn't sound that unreasonable. Of course if the kids lie and say they're 18+ instead that might be different...
Re:Dateline NBC (Score:5, Informative)
A person is 'entrapped' when he is induced or persuaded by law enforcement officers or their agents to commit a crime that he had no previous intent to commit; and the law as a matter of policy forbids conviction in such a case.
However, there is no entrapment where a person is ready and willing to break the law and the Government agents merely provide what appears to be a favorable opportunity for the person to commit the crime. For example, it is not entrapment for a Government agent to pretend to be someone else and to offer, either directly or through an informer or other decoy, to engage in an unlawful transaction with the person. So, a person would not be a victim of entrapment if the person was ready, willing and able to commit the crime charged in the indictment whenever opportunity was afforded, and that Government officers or their agents did no more than offer an opportunity.
On the other hand, if the evidence leaves a reasonable doubt whether the person had any intent to commit the crime except for inducement or persuasion on the part of some Government officer or agent, then the person is not guilty.
In slightly different words: Even though someone may have [sold drugs], as charged by the government, if it was the result of entrapment then he is not guilty. Government agents entrapped him if three things occurred:
- First, the idea for committing the crime came from the government agents and not from the person accused of the crime.
- Second, the government agents then persuaded or talked the person into committing the crime. Simply giving him the opportunity to commit the crime is not the same as persuading him to commit the crime.
- And third, the person was not ready and willing to commit the crime before the government agents spoke with him.
On the issue of entrapment the government must prove beyond a reasonable doubt that the defendant was not entrapped by government agents.
Re:Simple algorithm (Score:4, Informative)
If you're programming a 6502 processor, maybe. On x86 systems, the opcode mnemonic is SAL.
Furthermore, SAL (shift arithmetic left) is actually identical in function to SHL (shift left). SAR and SHR are not identical in function, since SAR preserves the sign bit.