Results 41 to 50 of about 3,374,770 (347)

Unsupervised Image Segmentation Parameters Evaluation for Urban Land Use/Land Cover Applications

Geomatics
Image segmentation plays an important role in object-based classification. An optimal image segmentation should result in objects being internally homogeneous and, at the same time, distinct from one another.
Guy Blanchard Ikokou, Kate Miranda Malale   +1 more
doaj   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +1 more source

Anomaly Detection Based on Markovian Geometric Diffusion

Machine Learning and Knowledge Extraction
Automatic anomaly detection is vital in domains such as healthcare, finance, and cybersecurity, where subtle deviations may signal fraud, failures, or impending risks.
Erikson Carlos Ramos, Leandro Carlos de Souza, Gustavo Henrique Matos Bezerra Motta   +2 more
doaj   +1 more source

On Shrinkage Estimation for the Scale Parameter of Weibull Distribution

Data Science Journal, 2009
In the present article, some shrinkage testimators for the scale parameter of a two-parameter Weibull life testing model have been suggested under the LINEX loss function assuming the shape parameter is to be known.
Gyan Prakash, D C Singh, S K Sinha
doaj   +1 more source

Computing Web-scale Topic Models using an Asynchronous Parameter Server

, 2017
Topic models such as Latent Dirichlet Allocation (LDA) have been widely used in information retrieval for tasks ranging from smoothing and feedback methods to tools for exploratory search and discovery.
Asuncion A., Hofmann T., Yu H.-F., Zaharia M.   +3 more
core   +2 more sources

Aggressive prostate cancer is associated with pericyte dysfunction

Molecular Oncology, EarlyView.
Tumor‐produced TGF‐β drives pericyte dysfunction in prostate cancer. This dysfunction is characterized by downregulation of some canonical pericyte markers (i.e., DES, CSPG4, and ACTA2) while maintaining the expression of others (i.e., PDGFRB, NOTCH3, and RGS5).
Anabel Martinez‐Romero, Ane Martinez‐Larrinaga, Joaquim Grego‐Bessa, Saioa Garcia‐Longarte, Hielke van Splunder, Ianire Astobiza, Amaia Ercilla, Laura Bozal‐Basterra, Isabel Mendizabal, Pilar Villacampa, Arkaitz Carracedo, Mariona Graupera   +11 more
wiley   +1 more source

Uniqueness, scale, and resolution issues in groundwater model parameter identification

Water Science and Engineering, 2015
This paper first visits uniqueness, scale, and resolution issues in groundwater flow forward modeling problems. It then makes the point that non-unique solutions to groundwater flow inverse problems arise from a lack of information necessary to make the ...
Tian-chyi J. Yeh, De-qiang Mao, Yuan-yuan Zha, Jet-chau Wen, Li Wan, Kuo-chin Hsu, Cheng-haw Lee   +6 more
doaj   +1 more source

Estimation of Scale and Hurst Parameters of Semi-Selfsimilar Processes [PDF]

, 2012
The characteristic feature of semi-selfsimilar process is the invariance of its finite dimensional distributions by certain dilation for specific scaling factor. Estimating the scale parameter $\lambda$ and the Hurst index of such processes is one of the
Modarresi, Navideh, Philippe, Anne, Rezakhah, Saeid   +2 more
core   +2 more sources

A unified minimax result for restricted parameter spaces

, 2012
We provide a development that unifies, simplifies and extends considerably a number of minimax results in the restricted parameter space literature. Various applications follow, such as that of estimating location or scale parameters under a lower (or ...
Marchand, Éric, Strawderman, William E.
core   +1 more source

The neural crest‐associated gene ERRFI1 is involved in melanoma progression and resistance toward targeted therapy

Molecular Oncology, EarlyView.
ERRFI1, a neural crest (NC)‐associated gene, was upregulated in melanoma and negatively correlated with the expression of melanocytic differentiation markers and the susceptibility of melanoma cells toward BRAF inhibitors (BRAFi). Knocking down ERRFI1 significantly increased the sensitivity of melanoma cells to BRAFi.
Nina Wang, Qian Sun, Daniel Novak, Lei Zhu, Juliane Poelchen, Tamara Steinfass, Yiman Wang, Viktor Umansky, Jochen Utikal   +8 more
wiley   +1 more source