Vector space model or term vector model is an algebraic model for representing text documents (or more generally, items) as vectors such that the distance...
10 KB (1,415 words) - 01:57, 30 September 2024
Vector Space Model (TVSM) (literature: [1]) extends the vector space model of information retrieval by removing the constraint that the term-vectors be...
2 KB (279 words) - 22:03, 5 October 2020
Word embedding (redirect from Word vector space)
representation is a real-valued vector that encodes the meaning of the word in such a way that the words that are closer in the vector space are expected to be similar...
29 KB (3,154 words) - 07:58, 30 March 2025
In mathematics and physics, a vector space (also called a linear space) is a set whose elements, often called vectors, can be added together and multiplied...
87 KB (11,491 words) - 10:55, 30 April 2025
many queries. IR models can be broadly divided into three types: Boolean models or BIR, Vector Space Models, and Probabilistic Models. Various comparisons...
17 KB (2,124 words) - 20:58, 27 April 2025
Cosine similarity (redirect from Vector cosine)
between two non-zero vectors defined in an inner product space. Cosine similarity is the cosine of the angle between the vectors; that is, it is the dot...
22 KB (3,084 words) - 17:36, 27 April 2025
A vector database, vector store or vector search engine is a database that can store vectors (fixed-length lists of numbers) along with other data items...
23 KB (1,628 words) - 12:20, 13 April 2025
Geometric algebra (section Vector space model)
Homogeneous models generally refer to a projective representation in which the elements of the one-dimensional subspaces of a vector space represent points...
93 KB (13,801 words) - 22:00, 13 April 2025
The Generalized vector space model is a generalization of the vector space model used in information retrieval. Wong et al. presented an analysis of the...
4 KB (531 words) - 19:28, 29 January 2023
In vector calculus and physics, a vector field is an assignment of a vector to each point in a space, most commonly Euclidean space R n {\displaystyle...
28 KB (4,076 words) - 01:44, 23 February 2025
on the above sorts of vectors. A vector space formed by geometric vectors is called a Euclidean vector space, and a vector space formed by tuples is called...
10 KB (2,694 words) - 22:53, 2 May 2025
retrieval systems, the Rocchio algorithm was developed using the vector space model. Its underlying assumption is that most users have a general conception...
7 KB (822 words) - 16:55, 9 September 2024
Word2vec (section BioVectors)
job for infrequent words. After the model is trained, the learned word embeddings are positioned in the vector space such that words that share common contexts...
31 KB (3,928 words) - 13:45, 29 April 2025
physics) Row and column vectors, single row or column matrices Vector quantity Vector space Vector field, a vector for each point Vector (molecular biology)...
6 KB (733 words) - 12:35, 8 September 2024
inherited by the function space. For example, the set of functions from any set X into a vector space has a natural vector space structure given by pointwise...
9 KB (1,225 words) - 21:01, 28 April 2025
Information retrieval (section Model types)
query vector and document vector is represented as a scalar value. Vector space model Generalized vector space model (Enhanced) Topic-based Vector Space Model...
28 KB (3,349 words) - 11:44, 16 February 2025
analysis, a Banach space (/ˈbɑː.nʌx/, Polish pronunciation: [ˈba.nax]) is a complete normed vector space. Thus, a Banach space is a vector space with a metric...
102 KB (17,049 words) - 16:58, 14 April 2025
developed as part of research on the SMART system, including the vector space model, relevance feedback, and Rocchio classification. Gerard Salton led...
7 KB (359 words) - 17:53, 3 June 2024
point, the zero vector is called the origin. Adding a fixed vector to the elements of a linear subspace (vector subspace) of a vector space produces an affine...
48 KB (7,537 words) - 05:07, 13 April 2025
the now widely used vector space model for Information Retrieval. In this model, both documents and queries are represented as vectors of term counts, and...
9 KB (836 words) - 16:09, 18 April 2025
Vector quantization (VQ) is a classical quantization technique from signal processing that allows the modeling of probability density functions by the...
13 KB (1,649 words) - 10:50, 3 February 2024
In machine learning, support vector machines (SVMs, also support vector networks) are supervised max-margin models with associated learning algorithms...
65 KB (9,068 words) - 08:13, 28 April 2025
and have many of the same applications, especially as features in a vector space model. Syntactic n-grams for certain tasks gives better results than the...
20 KB (2,652 words) - 19:42, 28 November 2024
In mathematics, a symplectic vector space is a vector space V {\displaystyle V} over a field F {\displaystyle F} (for example the real numbers R {\displaystyle...
15 KB (2,275 words) - 11:50, 14 August 2024
for real-valued vectors, used in (among other fields) information retrieval to score the similarity of documents in the vector space model. In machine learning...
17 KB (2,564 words) - 04:35, 12 July 2024
Explicit semantic analysis (category Vector space model)
observation, links have been shown between ESA and the generalized vector space model. Gabrilovich and Markovitch replied to Anderka and Stein by pointing...
9 KB (1,036 words) - 19:19, 23 March 2024
images, can be represented as points in a high-dimensional space (see vector space model for the case of text). However, the essential algorithms for...
29 KB (5,136 words) - 23:48, 26 February 2025
re-formalized to define Euclidean spaces through axiomatic theory. Another definition of Euclidean spaces by means of vector spaces and linear algebra has been...
47 KB (6,970 words) - 13:07, 13 February 2025
fields, primarily in three-dimensional Euclidean space, R 3 . {\displaystyle \mathbb {R} ^{3}.} The term vector calculus is sometimes used as a synonym for...
22 KB (2,135 words) - 04:00, 8 April 2025
implementation of bag-of-words models and improves scalability. Additive smoothing Feature extraction Machine learning MinHash Vector space model w-shingling McTear...
8 KB (926 words) - 02:51, 2 February 2025