The fast-growing quantity of information hinders the process of machine learning, making it computationally costly and with substandard results. Feature selection is a pre-processing method for obtaining the optimal subset of features in a data set. Optimization algorithms struggle to decrease the dimensionality while retaining accuracy in high-dimensional data set. This article proposes a novel chaotic opposition fruit fly optimization algorithm, an improved variation of the original fruit fly algorithm, advanced and adapted for binary optimization problems. The proposed algorithm is tested on ten unconstrained benchmark functions and evaluated on twenty-one standard datasets taken from the Univesity of California, Irvine repository and Arizona State University. Further, the presented algorithm is assessed on a coronavirus disease dataset, as well. The proposed method is then compared with several well-known feature selection algorithms on the same datasets. The results prove that the presented algorithm predominantly outperform other algorithms in selecting the most relevant features by decreasing the number of utilized features and improving classification accuracy.
- MeSH
- algoritmy MeSH
- COVID-19 * MeSH
- Drosophila MeSH
- strojové učení MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Arizona MeSH
The booklouse, Liposcelis bostrychophila, is a worldwide pest of stored products. For decades, only thelytokous parthenogenetic reproduction was documented in L. bostrychophila. Male L. bostrychophila were first found in Hawaii in 2002. In 2009, a sexual strain was found in Arizona. We examined the morphology of both males and females of the Arizona strain and compared the Arizona sexual strain with the Hawaii sexual strain and the parthenogenetic strains of L. bostrychophila. The sexual and parthenogenetic strains show some differences in eye morphology. To examine the relationship between sexual and asexual lineages, we sequenced the mitochondrial 12S and 16S ribosomal RNA genes of males and females from the Arizona strain. Phylogenetic analyses of L. bostrychophila individuals revealed that: 1) the sexually reproducing colony found in Arizona contains two closely related mitochondrial DNA haplotypes--one present in only females and the other in both males and females; and 2) the Arizona sexual strain was most closely related to a parthenogenetic strain in Illinois. We detected Rickettsia in all of the parthenogenetic individuals we checked but not in any Arizona sexual individuals. Further evidence is required to establish whether the presence of Rickettsia is linked to asexual reproduction in Liposcelis.
- MeSH
- DNA bakterií analýza MeSH
- fylogeneze MeSH
- haplotypy MeSH
- hmyz klasifikace genetika mikrobiologie MeSH
- mikroskopie elektronová rastrovací MeSH
- mitochondriální DNA genetika metabolismus MeSH
- molekulární sekvence - údaje MeSH
- partenogeneze MeSH
- polymerázová řetězová reakce MeSH
- Rickettsia genetika izolace a purifikace MeSH
- RNA ribozomální 16S chemie genetika metabolismus MeSH
- RNA ribozomální chemie genetika metabolismus MeSH
- sekvence nukleotidů MeSH
- sekvenční seřazení MeSH
- zvířata MeSH
- Check Tag
- mužské pohlaví MeSH
- ženské pohlaví MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Geografické názvy
- Arizona MeSH
- Názvy látek
- DNA bakterií MeSH
- mitochondriální DNA MeSH
- RNA ribozomální 16S MeSH
- RNA ribozomální MeSH
- RNA, ribosomal, 12S MeSH Prohlížeč
A case of the pulmonary form of coccidioidomycosis of a Czech patient infected in Arizona is described. The disease was diagnosed on the basis of serological tests. In addition to a review of the mycological, epidemiological and clinical picture of coccidioidomycosis criteria of laboratory mycological diagnostics are given. It is important to be aware of this mycosis in patients who have a history of recent visits to endemic areas in North, Central and South America.
- MeSH
- cestování MeSH
- kokcidioidomykóza * diagnóza epidemiologie MeSH
- lidé MeSH
- Check Tag
- lidé MeSH
- mužské pohlaví MeSH
- Publikační typ
- anglický abstrakt MeSH
- časopisecké články MeSH
- kazuistiky MeSH
- Geografické názvy
- Arizona MeSH
- Československo epidemiologie MeSH
