Results 31 to 40 of about 3,925,241 (306)

A study of the Dirichlet Priors for term frequency normalisation [PDF]

open access: yes, 2005
In Information Retrieval (IR), the Dirichlet Priors have been applied to the smoothing technique of the language modeling approach. In this paper, we apply the Dirichlet Priors to the term frequency normalisation of the classical BM25 probabilistic model
Ounis, I., Ben He, Iadh Ounis, He, B.
core   +1 more source

A comparison on effects of normalisations in the detection of differentially expressed genes

open access: yesBMC Bioinformatics, 2009
Background Various normalisation techniques have been developed in the context of microarray analysis to try to correct expression measurements for experimental bias and random fluctuations.
Risso Davide   +3 more
doaj   +1 more source

Setting per-field normalisation hyper-parameters for the named-page finding search task [PDF]

open access: yes, 2007
Per-field normalisation has been shown to be effective for Web search tasks, e.g. named-page finding. However, per-field normalisation also suffers from having hyper-parameters to tune on a per-field basis. In this paper, we argue that the purpose of per-
Ounis, I., He, B., Ben He, Iadh Ounis
core   +1 more source

Development of 3D MRI-Based Anatomically Realistic Models of Breast Tissues and Tumours for Microwave Imaging Diagnosis

open access: yesSensors, 2021
Breast cancer diagnosis using radar-based medical MicroWave Imaging (MWI) has been studied in recent years. Realistic numerical and physical models of the breast are needed for simulation and experimental testing of MWI prototypes.
Ana Catarina Pelicano   +7 more
doaj   +1 more source

Characterising the space–time structure of rainfall in the Sahel with a view to estimating IDAF curves [PDF]

open access: yesHydrology and Earth System Sciences, 2014
Intensity–duration–area–frequency (IDAF) curves are increasingly demanded for characterising the severity of storms and for designing hydraulic structures.
G. Panthou   +4 more
doaj   +1 more source

Image reconstruction for emission tomography using intensity normalised patch‐based regularisation

open access: yesIET Image Processing, 2019
Recently, patch‐based regularisation methods have been a topic for tomographic reconstruction, since they are expected to preserve features within patches. However, conventional patch‐based methods tend to ignore important similarities when the two patches being compared have a large intensity difference, while they share similar features in a scaled ...
Xue Ren, Soo-Jin Lee
openaire   +2 more sources

Mortality has improved in RA, but we must remain vigilant. Response to: ‘Early intensive treatment normalises excess mortality in ACPA-negative RA but not in ACPA-positive RA’ by Matthijssen et al [PDF]

open access: yesAnnals of the Rheumatic Diseases, 2020
We compliment Matthijssen et al with this highly interesting analysis and results from the Leiden Early Arthritis Clinic. Their mortality results strongly support our findings1 and again emphasise that the focus should be on the excess mortality that emerges after 10 years.
Pomme B M Poppelaars   +2 more
openaire   +4 more sources

Normalisation of multicondition cDNA macroarray data

open access: yes, 2007
Background. Normalisation is a critical step in obtaining meaningful information from the high-dimensional DNA array data. This is particularly important when complex biological hypotheses/questions, such a functional analysis and regulatory interactions
Dawes N, Glassey J
core   +4 more sources

A quadratic estimator view of the transfer function correction in intensity mapping surveys [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society Letters
In single dish neutral hydrogen (H i) intensity mapping, signal separation methods such as Principal Component Analysis (PCA) are used to clean the astrophysical foregrounds.
Zhao Chen
semanticscholar   +1 more source

University of Glasgow at WebCLEF 2005: experiments in per-field normalisation and language specific stemming [PDF]

open access: yes, 2006
We participated in the WebCLEF 2005 monolingual task. In this task, a search system aims to retrieve relevant documents from a multilingual corpus of Web documents from Web sites of European governments.
Macdonald, C.   +9 more
core   +1 more source

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