Syntactic analysis is a key problem in the field of natural language processing, if it can be effectively solved, on the one hand, it can verify the correctness and perfection of the corresponding tree library construction system. On the other hand, it can also directly serve for various upper-level applications, such as search engine user log analysis and keyword recognition, such as information extraction, automatic question and answer, Other natural language processing related tasks such as machine translation.
Phrase structure and dependency structure are the two most widely studied grammatical systems in the present syntactic analysis. Here we introduce the dependent structure.
The dependency syntax reveals its syntactic structure by analyzing the dependencies between components within a language unit. It is argued that the core verb in the sentence is the central component of the other component, and that it is not subject to any other component, and that all the dominant elements belong to the dominant person in some kind of dependency relationship.
1, only one ingredient in a sentence is independent;
2. Other ingredients are directly dependent on a component;
3, No ingredient can be dependent on two or more than two components;
4, if a component is directly dependent on the B component, and the C component is between A and B in the sentence, then C or directly depends on B, or directly dependent on a and B of a component,
5, the central component of the left and right sides of the other components do not occur with each other.
The phenomenon of the mutual domination and domination, dependence and dependence of the sentence components is common in the Chinese vocabulary (synthetic language), phrases, sentences, compound until the level of the sentence group can be used independently of the language units, this feature is the universality of the dependence of the syntactic analysis can reflect the semantic modification of the relationship between the elements of the sentence, It can obtain long-distance collocation information and is independent of the physical location of the sentence composition.
Attached: LTP dependency token meaning used by the dependency Analysis Module (http://www.ltp-cloud.com/demo/)
Now the dependency syntax analysis annotation relationship (total 14 kinds) and the meanings are as follows:
Relationship Type |
Tag |
Description |
Example |
Principal-predicate relationship |
SBV |
Subject-verb |
I gave her a bouquet of flowers (I <--sent) |
Dynamic-Guest relations |
Vob |
Direct object, Verb-object |
I gave her a bouquet of flowers (send-to-flower) |
Guest relations |
IOB |
Indirect object, Indirect-object |
I gave her a bouquet of flowers (to her) |
Front Object |
Fob |
Front object, Fronting-object |
He reads all the books (books <--read) |
Concurrent language |
DBL |
Double |
He invited me to dinner (please--i) |
Fixed-Chinese relations |
ATT |
Attribute |
Red apple (red <--apple) |
Structure in shape |
ADV |
Adverbial |
Very beautiful (very <--beautiful) |
Dynamic complement structure |
Cmp |
Complement |
Finished the homework (done and finished) |
Tie relationship |
COO |
Coordinate |
Mountains and Sea (Mt. and the Sea) |
Guest relations |
Pob |
Preposition-object |
Within the trade zone (---within) |
Left Attach relationship |
LAD |
Left adjunct |
Mountains and sea (and <--Sea) |
Right Attach relationship |
Rad |
Right adjunct |
Kids (Kids) |
Independent structure |
Is |
Independent structure |
Two sentences are structurally independent of each other. |
Core relationships |
HED |
Head |
The core of the whole sentence |
Previously more complex dependencies marked the meaning of the version:
Dependency token (24 total)
Fixed-Chinese relationship att (attribute)
Quantity relationship Qun (quantity)
Relationship COO (coordinate)
The same-bit relationship app (appositive)
Front additional relationship lad (left adjunct)
Post-Attach relationship rad (right adjunct)
Dynamic-Bingo Relationship vob (Verb-object)
POB relationship (Preposition-object)
Principal-predicate Relationship SBV (subject-verb)
Analogy relationship sim (similarity)
Core Hed (head)
Continuous structure VV (VERB-VERB)
Association structure CNJ (conjunctive)
Voice Structure MT (Mood-tense)
Independent structure is (independent structure)
Medium Structure ADV (adverbial)
Dynamic complement structure CMP (complement)
"The" Word Structure de
"Ground" word structure di
"Get" word Structure dei
"Put" the word structure BA
"By" Word Structure bei
Independent clause IC (independent clause)
Dependent clause DC (dependent clause)
Reference links
An overview and application of Chinese dependent syntactic analysis