Method and system for content categorization

1. A method for content categorization, comprising:

transmitting, by a content categorization requester, a content digest of a content to be categorized to a content categorization provider;

instructing, by the content categorization requester, the content categorization provider to perform content categorization on the content digest by an algorithm corresponding to the content digest; and

performing, by the content categorization provider, content categorization according to the content digest by the algorithm corresponding to the content digest as instructed by the content categorization requester.

2. The method for content categorization of claim 1 , further comprising: obtaining, by the content categorization requester, the content digest when it determines necessary to obtain the content digest of the content to be categorized.

3. The method for content categorization of claim 1 , wherein the content digest of the content to be categorized and a type information corresponding to the content digest are carried in a content categorization request message transmitted to the content categorization provider; and

performing, by the content categorization provider, content categorization according to the content digest comprises:

performing, by the content categorization provider, content categorization on the content digest carried in the content categorization request message by means of a corresponding algorithm according to the type information carried in the message.

4. The method for content categorization of claim 2 , wherein obtaining, by the content categorization requester, the content digest when it determines necessary to obtain the content digest of the content to be categorized, comprises:

obtaining, by the content categorization requester, the content digest of the content to be categorized when it determines at least one of: that data size of the content to be categorized is larger than a threshold; that the data format of the content to be categorized is one of predefined data formats; and that it is specified by a user.

5. A method for categorizing a content, comprising:

receiving a content categorization request message, which carries a content digest of a content to be categorized and an instruction that performing content categorization on the content digest by an algorithm corresponding to the content digest; and

performing content categorization on the content to be categorized according to the content digest by the algorithm corresponding to the content digest according to the instruction.

6. A device adapted to provide content categorization comprising:

a receiving component, adapted to receive a content categorization request message, which carries a content digest of a content to be categorized and an instruction that performing content categorization on the content digest by an algorithm corresponding to the content digest; and

a content categorization component, adapted to perform content categorization on the content to be categorized according to the content digest by the algorithm corresponding to the content digest according to the instruction.

7. A system for content categorization comprising:

a content categorization side and a content categorization provider side;

the content categorization requester side comprises a content categorization requesting device, which further comprises:

a digest operation determination component, adapted to determine whether it is necessary to obtain a content digest of a content to be categorized,

a digest obtaining component, adapted to obtain the content digest of the content to be categorized when the digest operation determination component determines it is necessary to obtain the content digest of the content to be categorized,

a first transmit component, adapted to transmit the content digest obtained by the digest obtaining component;

a first instructing component, adapted to instruct the content categorization providing device, through the first transmit component, to perform content categorization on the content digest by an algorithm corresponding to the content digest;

the content categorization provider side comprises a content categorization providing device, adapted to perform content categorization according to the content digest transmitted from the content categorization requesting device.

8. The system for content categorization of claim 7 , wherein the content digest reflects primary information of the content to be categorized and has a data size smaller than that of the content to be categorized.

9. The system for content categorization of claim 7 , wherein the content categorization requesting device further comprises a second instructing component, adapted to instruct the content categorization providing device, through the second transmit component, to perform content categorization on the content by means of an algorithm corresponding to the content.

10. The system for content categorization of any of claim 7 , wherein the content providing device further comprises a third transmit component, adapted to transmit the content to be categorized to the content categorization providing device, when learning that the digest operation determination component determines unnecessary to obtain the content digest of the content to be categorized.

11. The system for content categorization of claim 10 , wherein the content providing device further comprises a third instructing component, adapted to instruct the content categorization providing device, through the third transmit component, to perform content categorization on the content by means of an algorithm corresponding to the content.

12. A content categorization requesting device, comprises:

a digest obtaining component, adapted to obtain content digest of content to be categorized;

a first transmit component, adapted to transmit the content digest obtained by the digest obtaining component to a content categorization provider;

a first instructing component, adapted to instruct the content categorization provider, through the first transmit component, to perform content categorization on the content digest by means of an algorithm corresponding to the content digest.