Occurrence Download|生物多样性数据集|物种分布数据集
收藏Asteroids by the Minor Planet Center
包含所有已知小行星的轨道数据和观测数据。数据来源于Minor Planet Center,格式包括Fortran (.DAT)和JSON,数据集大小为81MB(压缩)和450MB(未压缩),记录数约750,000条,每日更新。
github 收录
jpft/danbooru2023
Danbooru2023是一个大规模的动漫图像数据集,包含超过500万张由爱好者社区贡献并详细标注的图像。图像标签涵盖角色、场景、版权、艺术家等方面,平均每张图像有30个标签。该数据集可用于训练图像分类、多标签标注、角色检测、生成模型等多种计算机视觉任务。数据集基于danbooru2021构建,扩展至包含ID #6,857,737的图像,增加了超过180万张新图像,总大小约为8TB。图像以原始格式提供,分为1000个子目录,使用图像ID的模1000进行分桶,以避免文件系统性能问题。
hugging_face 收录
TM-Senti
TM-Senti是由伦敦玛丽女王大学开发的一个大规模、远距离监督的Twitter情感数据集,包含超过1.84亿条推文,覆盖了超过七年的时间跨度。该数据集基于互联网档案馆的公开推文存档,可以完全重新构建,包括推文元数据且无缺失推文。数据集内容丰富,涵盖多种语言,主要用于情感分析和文本分类等任务。创建过程中,研究团队精心筛选了表情符号和表情,确保数据集的质量和多样性。该数据集的应用领域广泛,旨在解决社交媒体情感表达的长期变化问题,特别是在表情符号和表情使用上的趋势分析。
arXiv 收录
New locus reveals the genetic architecture of sex reversal in the Chinese tongue sole (Cynoglossus semilaevis)
Sex reversal in insects, amphibians, reptiles, and fishes is a complicated and interesting biological phenomenon. Sex reversal changes the sex ratio of populations and may complicate breeding schemes. In the Chinese tongue sole (Cynoglossus semilaevis), genetic females may change into pseudomales, thereby increasing aquaculture costs because of the lower growth rate of the males than that of the females. Here, we identify a new locus associated with sex reversal; this single nucleotide polymorphism (SNP) is located in the third intron of the doublesex and mab-3 related transcription factor 1 (Dmrt1) gene on the Z chromosome (named Cyn_Z_8564889) and has two alleles, A and G. Cyn_Z_8564889 regulates sex reversal interactively with our previously detected SNP (Cyn_Z_6676874), with the genetic females simultaneously carrying the T allele of Cyn_Z_6676874 and the A allele of Cyn_Z_8564889 changing into pseudomales. Other Dmrt1 polymorphisms were detected, which formed two haplotypes. Two SN...
DataONE 收录
Differential introgression in a mosaic hybrid zone reveals candidate barrier genes
Hybrid zones act as genomic sieves; although globally advantageous alleles will spread throughout the zone and neutral alleles can be freely exchanged between species, introgression will be restricted for genes that contribute to reproductive barriers or local adaptation. Seminal fluid proteins (SFPs) are known to contribute to reproductive barriers in insects and have been proposed as candidate barrier genes in the hybridizing field crickets G. pennsylvanicus and G. firmus. Here, we have used 125 SNPs to characterize patterns of differential introgression and to identify genes that may contribute to prezygotic barriers between these species. Using a transcriptome scan of the male cricket accessory gland (the site of SFP synthesis), we identified genes with major allele frequency differences between the species. We then compared patterns of introgression for genes encoding seminal fluid proteins with patterns for genes expressed in the same tissue that do not encode SFPs. We find no evi...
DataONE 收录