Questions tagged [dependency-grammar]

Dependency grammar, often abbreviated as DG, is a particular approach to the syntax of natural languages. DGs view words as directly linked to each other, whereby the links are directed. Phrases consist of a head/root word and its dependents.

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24
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6answers
8k views

Why is constituency needed, since dependency gets the job done more easily and economically?

I do dependency grammar (DG), and my personal view is that dependency gets the job done more efficiently than constituency by far. The average constituency parse (= phrase structure parse) contains ...
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2answers
419 views

German Dependency Parsing - question about dependencies between "sich ____ lassen"

I'm working on project regarding German dependency parsing, and came across something I'm a bit unsure about. Using a parser, when given an input (whether it be in a sentence or just the verbs) which ...
7
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4answers
235 views

Why is the subject outside the VP in most theories of syntax?

I'm trying to understand why in most theories of syntax, the subject of a sentence is the sister of the verb, and not the child eg: S -> NP VP instead of VP -> NP V (NP...) The latter feels more ...
6
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1answer
119 views

To what extent was Chomsky influenced by Tesnière?

Kind of a question about the meta-history of linguistics as a discipline. Chomsky released 'Syntactic Structures' in the US in 1957; Tesnière released Éléments de syntaxe structurale posthumously ...
6
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3answers
281 views

Where can I find a good primer of dependency grammar?

I found a good phrase structure grammar primer, namely "Beginning Syntax" by Thomas, which has been recommended by more than one person on this exchange. However, when I looked for any similarly ...
6
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3answers
246 views

Is there a paradigmatic formalism for dependency grammars?

When looking on the web, wikipedia for example, at the concept of constituent, it is associated with the concept of phrase structure, and rather quickly with context-free languages (as the ...
6
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3answers
2k views

What constitutes a Long Distance Dependency, and how can it be quantified?

To come to a computational and statistical analysis of some machine translated texts, a colleague of mine wants to quantify Long Distance Dependencies. The problem is, that we cannot seem to find ...
5
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1answer
390 views

Maltparser vs Freeling for Spanish dependency parser

I need to parse a Spanish corpus with syntactic dependencies. I have tried both Freeling and Maltparser, they both give similar results, but with some divergence. I need the highest accuracy possible, ...
4
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2answers
605 views

dependency or constituency treebank?

Most Treebank conversion which I found in the web are from constituency treebank to dependency treebank, I wonder why there is little works in the opposite direction? Does it mean that nowadays ...
4
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2answers
173 views

"Toy" Tools for Dependency Parsing?

I plan to work with dependency parsing, as an intermediate step in a text understanding problem. I'm also still trying to understand the terminology and methods. Any pointers (or providers) of tools (...
4
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1answer
217 views

Dependency Grammar constraints

I study dependency grammar, DG and I have a question regarding constraints of DG. I do understand why do we need constituency grammars, CG and DG, however I don't completely understand the ...
4
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0answers
89 views

Using (e.g.) Stanford NLP for retrieving specific “indirect” objects

I am a computer scientist using Stanford NLP for extracting a Semantic Graph from plain text. Through this tool I am already getting the universal dependencies but now I want to get all the possible ...
4
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0answers
84 views

Kuryłowicz on cases and prepositions

I've read Kuryłowicz's classic paper "Le problème du classement des cas" and I'm not sure how to interpret what he says about the difference between case affixes and prepositions. Does he in effect ...
3
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2answers
162 views

X-bar theory without movement

Are there any theories out there that use X-bar theory but deny movement (like Dependency Syntax can)?
3
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1answer
784 views

How do you draw a Dependency tree diagram of a verbless clause such as "Me too"?

In Constituency Grammar (CG), I guess that you would consider "Me" the subject and "too" the predicate. Hence, no problem drawing a tree diagram out of "Me too" in CG. On the other hand, Dependency ...
3
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3answers
132 views

Computational model of dependency parsing

I come from a computer science perspective and am trying to understand dependency parsing. What is the formal (computational) model for dependency parsing? The computational model for constituency ...
3
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1answer
181 views

Is there a grammar of syntax that takes into account inherent syntactic ambiguity in natural languages?

Natural languages necessarily have certain inherent ambiguity. If there were a natural language without inherent ambiguity, then one could have easily adopted such a natural language and used it as a ...
3
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1answer
264 views

How does a dependency grammar generate strings?

Theoretically speaking, if I were to use a rule-based approach to generate grammatically correct strings for a language L, I would implement a phrase structure grammar G = (V, T, R, S) consisting of ...
3
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1answer
83 views

Governors of adjectives in dependency grammars

In some dependency treebanks for Germanic languages, nouns in subject position are assigned the governors of their corresponding predicative adjectives, as opposed to the copular verb connecting the ...
3
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2answers
133 views

Do formal language theory have concepts corresponding to dependency grammars?

If I am correct, phrase structure grammars in linguistics are the grammars for recursively enumerable languages. Do formal language theory have concepts corresponding to dependency grammars, the ...
3
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1answer
129 views

In what ways might dependency grammar be a better fit for free word order languages?

I believe it is often cited that dependency grammars are more adequate for free word order languages. How actually, is dependency grammar more descriptive or less limited, than constituency grammar, ...
3
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1answer
710 views

How to interpret the dependency parse tree of an English Slot Grammar?

I am reading the paper titled Deep parsing in Watson (DOI: 10.1147/JRD.2012.2185409) and need help understanding this figure: This is the paragraph that describes the tree in the figure above: An ...
3
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1answer
145 views

Dependency Trees of types of clauses

I have been trying to learn linguistics, mainly English. Recently I have been studying clauses and dependency trees. I have been wondering - Whether can we assume a rough tree structure for every ...
3
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0answers
50 views

Specification of Dependency Grammar

My understanding is that, while natural languages aren't completely context-free, you can get a good approximation of a specification of English in Backus-Naur form, in that if you look at a given ...
3
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0answers
76 views

What features are good for dependency parsing?

I am trying to implement a graph based dependency parser. Since I come from a computer engineering perspective, I have trouble finding the features. Assuming that we have a (head,dependent) relation ...
3
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0answers
52 views

How should "at some time" be tagged in Universal Dependencies framework?

I want to tag a sentence Jones was unemployed at some time before he graduated. with UD tags. I'm not sure how to tag at some time. Stanford parser suggests the reading: case (time-6, at-4) det (...
3
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2answers
272 views

What are the syntactic functions in this example of Dutch cross-serial dependencies?

Sentences like the following occur frequently as examples for cross-serial dependencies in Dutch. Ik dacht dat Jan Piet Marie zag helpen lezen. Often the dependencies are depicted only as arcs ...
2
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1answer
66 views

The Meaning <=> Text Theory (MTT)

I have recently read about "The Meaning <=> Text Theory" approach to syntax and would like to know more about it. Specifically, What are the main differences between this theory and the phrase ...
2
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1answer
339 views

Convert a non projective dependency tree to a projective one

I'm trying to build a dependency parser and I want it to construct only projective trees. Do you know any tool that converts Non-projective trees (CONLL-U format) to projective ones?
2
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1answer
99 views

Do all frameworks of syntax view the string following an inverted auxiliary verb in English as the complement of the auxiliary?

This is a follow-up question of an earlier question titled: In X bar theory, is the first auxiliary the head of an interrogative clause and the remainder the complement? In that question, I had this ...
2
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1answer
92 views

How can one best formalize dependency structures in terms of rules?

I am looking for guidance in forming mathematically-inspired rules for dependency syntax. I know about the rewrite rules for dependency structures produced by Hays (1964), but I am wondering whether ...
2
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1answer
133 views

Non-projective tree sentences

I'm trying to generate the non-projective tree of the sentence: "A hearing is scheduled on the issue today." But with the Stanford Core NLP tool (https://corenlp.run/), I obtain a projective ...
2
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1answer
69 views

How to extract example sentences from linguistics papers

Does anyone know of a good tool to grab all example sentences used in a paper so they could be processed via an NLP pipeline? I have udpipe in mind especially: I'd like to take sentences from one or ...
2
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1answer
173 views

What are the upsides of using dependency parsing over constituency parsing?

I am looking for an exhaustive list of upsides of using dependency parsing over constituency parsing (if possible, with references for each upside).
2
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1answer
335 views

Evidence for/against Lexical integrity principle

Some (mostly lexicalist) theories of syntax assume that there's a 1-to-1 relationship between the words in a sentence and the nodes in its syntax tree. It seems pretty obvious to me. Is there ...
2
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2answers
773 views

Dependency tree with "seem"

Could someone please tell me what's the dep. tree of "John seemed to fall asleep"? The problem is I don't know if "John" depends on "seem" or "fall".
2
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1answer
891 views

What it the best algorithm for dependency parsing?

There are quite a few statistical parsers but I'm interested in rule-based dependency parsing. I have a lexicon, i.e., a list of words with lemmas, POS, and morphological features. What is the best ...
2
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5answers
508 views

Introduction to linguistics from a practical application standpoint

I currently have a project that I need to do that involves quite a bit of computational linguistics. My background in linguistics is very high level - I wonder if there are any good introductory ...
2
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0answers
339 views

What exactly is the Structure-Dependency Principle

Could someone explain what structure-dependency is in layman terms, and why it's so important? Resources I've found on the internet weren't of much help so I'm asking on here. Thanks!
2
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0answers
85 views

Treatment of copular verb in dependency parse of Google Natural Language API vs Stanford CoreNLP parser

Basically my question is what is the correct treatment of copular verbs in the following sentence: "The car is red." According to Google Natural Language API, the root is the verb "is" and the "car" ...
2
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1answer
323 views

Mapping Minipar dependencies to Stanford Parser dependencies

I am trying to use the algorithm in Qiu et al., 2011, "Opinion Word Expansion and Target Extraction through Double Propagation" for my research. However, in the paper, they use Minipar for dependency ...
2
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3answers
387 views

How do dependency grammars account for information structure

In phrase structure grammars, discourse functions (topic, focus) have structural positions (cf. topicalization in English, right-edge focus in Russian, clause-initial focus in Welsh, preverbal focus ...
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2answers
167 views

Syntax trees associated with Prepositional Phrases as subject

Whenever we have a Prepositional Phrase as a subject, how should the dependency relations hold? Specifically, consider the following sentence: Before Wednesday does not work for me. One dependency ...
1
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3answers
634 views

How do formal theories analyse the syntax of polysynthetic languages?

How is syntax of polysynthetic languages (e.g. Inuktitut, Mohawk) represented in formal theories of syntax? In many cases, a sentence consists of only one or two words so the syntax tree is rather ...
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1answer
1k views

Steps to build a dependency parser [closed]

I'm a beginner in NLP. What are the main steps to build a dependency parser? thanks.
1
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1answer
119 views

How to draw the NP "so little" in "He said so little" in a tree diagram?

He said so little. includes the NP so little, which doesn't include any noun. In the X-bar theory style tree diagram, how do you go about describing the NP? Do you have N' below the NP? Do you have ...
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1answer
100 views

How to determine grammatical complexity using quantitative features?

I'm doing a research on defining the complexity of language used in technical documentations for technologies (libraries and modules) used in data science and machine learning engineering. And I'm ...
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1answer
87 views

Completely schematic construction?

I'm trying to understand what is a completely schematic construction in cognitive grammar. I found an example: VP --> V NP So, is that a construction that can be easily described by a general rule ...
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2answers
536 views

How do surface and deep syntax differ in dependency grammars?

Consider the sentence I will go to Belfast tomorrow. How do its surface and deep syntax tree differ in a dependency-based grammar?
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1answer
459 views

What is the linguistic significance of dep and gov methods in Stanford NLP's Typed Dependency class?

I am looking at a TypedDependency object like this: root(ROOT-0, fired-4), which is part of the StanfordNLP suite. If I call the object's .dep() method I get fired/VBD If I call the object's .gov() ...