Results 11 to 20 of about 3,241,555 (307)

Self-embedding indexed grammars

open access: yesTheoretical Computer Science, 1986
The notion `self-embedding' is defined for (right-linear, linear) indexed grammars and languages, and it is shown that non self-embedding (right- linear, linear) indexed languages are exactly the (right-linear, linear) context-free languages.
Rainer Parchmann, Jürgen Duske
openaire   +2 more sources

Embedding Imputation With Self-Supervised Graph Neural Networks

open access: yesIEEE Access, 2023
Embedding learning is essential in various research areas, especially in natural language processing (NLP). However, given the nature of unstructured data and word frequency distribution, general pre-trained embeddings, such as word2vec and GloVe, are ...
Uras Varolgunes   +3 more
doaj   +1 more source

Temporal self-attention network for medical concept embedding [PDF]

open access: yes, 2019
© 2019 IEEE. In longitudinal electronic health records (EHRs), the event records of a patient are distributed over a long period of time and the temporal relations between the events reflect sufficient domain knowledge to benefit prediction tasks such as
Shen, Tao   +17 more
core   +1 more source

Self-Writer: Clusterable Embedding Based Self-Supervised Writer Recognition from Unlabeled Data

open access: yesMathematics, 2022
Writer recognition based on a small amount of handwritten text is one of the most challenging deep learning problems because of the implicit characteristics of handwriting styles.
Zabir Mohammad   +4 more
doaj   +1 more source

Heuristic Attention Representation Learning for Self-Supervised Pretraining

open access: yesSensors, 2022
Recently, self-supervised learning methods have been shown to be very powerful and efficient for yielding robust representation learning by maximizing the similarity across different augmented views in embedding vector space.
Van Nhiem Tran   +3 more
doaj   +1 more source

Self-embeddings of Kleinian groups [PDF]

open access: yesAnnales Scientifiques de l’École Normale Supérieure, 1998
The authors give sufficient conditions for a geometrically finite Kleinian group \(G\) acting in the hyperbolic space \({\mathbf H}^n\) to have a co-Hopf property, i.e. not to contain non-trivial proper subgroup isomorphic to itself. The main result of the article is the following.
Ohshika, Ken'ichi, Potyagailo, Leonid
openaire   +2 more sources

Deep self-supervised clustering with embedding adjacent graph features

open access: yesSystems Science & Control Engineering, 2022
Deep clustering uses neural networks to learn the low-dimensional feature representations suitable for clustering tasks. Numerous studies have shown that learning embedded features and defining the clustering loss properly contribute to better ...
Xiao Jiang   +4 more
doaj   +1 more source

Reversible watermarking scheme with image-independent embedding capacity [PDF]

open access: yes, 2005
Permanent distortion is one of the main drawbacks of all the irreversible watermarking schemes. Attempts to recover the original signal after the signal passing the authentication process are being made starting just a few years ago. Some common problems,
C.-T. Li, Li, Chang-Tsun
core   +1 more source

Self-dual embeddings of K_{4m,4n} in different orientable and nonorientable pseudosurfaces with the same Euler characteristic

open access: yesElectronic Journal of Graph Theory and Applications, 2017
A proper embedding of a graph G in a pseudosurface P is an embedding in which the regions of the complement of G in P are homeomorphic to discs and a vertex of G appears at each pinchpoint in P;  we say that a proper embedding of G in P is self dual if ...
Steven Schluchter, J. Z. Schroeder
doaj   +1 more source

Donor DNA: Embedding self-regulation into blood donation culture [PDF]

open access: yesHematology, Transfusion and Cell Therapy
Dr RishiRaj Sinha
doaj   +2 more sources

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