Vertebrates originated in the lower Cambrian. Their diversification and morphological innovations have been attributed to large-scale gene or genome duplications at the origin of the group. These duplications are predicted to have occurred in two rounds, the "2R" hypothesis, or they may have occurred in one genome duplication plus many segmental duplications, although these hypotheses are dispu...

Compound words with unmarked word boundaries are problematic for many tasks in NLP and computational linguistics, including information extraction, machine translation, and syllabification. This paper introduces a simple, proof-of-concept language modeling approach to automatic compound segmentation, demonstrated with Finnish. The approach utilizes an off-the-shelf morphological analyzer to spl...

We built a pipeline to normalize Quechua texts through morphological analysis and disambiguation. Word forms are analyzed by a set of cascaded finite state transducers which split the words and rewrite the morphemes to a normalized form. However, some of these morphemes, or rather morpheme combinations, are ambiguous, which may affect the normalization. For this reason, we disambiguate the morp...

In this paper, we describe an automatic method for segmentation of building façade images. First, individual façades are isolated from general city block images. This step is based on accumulation of directional color gradients, assuming that façade structures are aligned. Then sky region is detected based on segmentation approach and color marker extraction. Finally, the images are split in fl...

We propose a sources separation method for extracting components in highly perturbed optical imaging videos. We reconstruct the observed signal as the sum of linear representation of the components. Assuming sparsity and morphological diversity, the linear representation of each component by a well designed operator contains only a few coefficients. We regularize the separation problem with blo...

Molecular and biochemical genetic analyses have revealed that many marine invertebrate taxa, including some well-studied and presumably cosmopolitan species, are actually complexes of sibling species. When morphological differences are slight and estimated divergence times are old, data suggest either unusually high rates of sequence evolution or long-term morphological stasis. Here, five gene ...

Two assemblages compose the scuttled Roman vessels discovered in Caska inlet (Pag Island, Croatia): three sewn boats (Caska 1, 3 and 4) one mortise-and-tenon constructed ship 2). While wood species used for construction of are quite similar (beech trunks split radially planking), 2 shows greater heterogeneity more common use conifer planking. The systematic identification species, analysis morp...

Disappearance of diagnostic morphological characters due to hybridization is considered to be one of the causes of the complex taxonomy of the species-rich (ca. 2000 described species) genus Carex (Cyperaceae). Carex furva s.l. belongs to section Glareosae. It is an endemic species from the high mountains of the Iberian Peninsula (Spain and Portugal). Previous studies suggested the existence of...