341 research outputs found
Review on financial risk procedures for assessing companies regard to young customers
Financial risk procedures are used by financial analysts for their researches. In this paper we present a sum-up of manager’s tools for assessing the liquidity and activity ratios of its company and a series of financial risk procedures. We descriptive investigate various financial risk procedures present in financial literature and we identify the predictive ability of the risk groups for assessing the performance and the risk of a company. Our purpose is to get a direct relationship between risk and performance.ratios; financial risk procedures; performance; bankruptcy; stock performance; strategic procedures.
Benchmarking Top-K Keyword and Top-K Document Processing with TK and TKD
Top-k keyword and top-k document extraction are very popular text analysis
techniques. Top-k keywords and documents are often computed on-the-fly, but
they exploit weighted vocabularies that are costly to build. To compare
competing weighting schemes and database implementations, benchmarking is
customary. To the best of our knowledge, no benchmark currently addresses these
problems. Hence, in this paper, we present TK, a top-k keywords and
documents benchmark, and its decision support-oriented evolution
TKD. Both benchmarks feature a real tweet dataset and queries
with various complexities and selectivities. They help evaluate weighting
schemes and database implementations in terms of computing performance. To
illustrate our bench-marks' relevance and genericity, we successfully ran
performance tests on the TF-IDF and Okapi BM25 weighting schemes, on one hand,
and on different relational (Oracle, PostgreSQL) and document-oriented
(MongoDB) database implementations, on the other hand
Fourier Transform Infrared Spectroscopy - Useful Analytical Tool for Non-Destructive Analysis
Email: consumer/user guide
An OWL ontology for ISO-based discourse marker annotation
Purpose: Discourse markers are linguistic cues that indicate how an utterance relates to the discourse context and what role it plays in conversation. The authors are preparing an annotated corpus in nine languages, and specifically aim to explore the role of Linguistic Linked Open Data (/LLOD) technologies in the process, i.e., the application of web standards such as RDF and the Web Ontology Language (OWL) for publishing and integrating data. We demonstrate the advantages of this approach
ISO-based annotated multilingual parallel corpus for discourse markers
Discourse markers carry information about the discourse structure and organization, and also signal local dependencies or
epistemological stance of speaker. They provide instructions on how to interpret the discourse, and their study is paramount
to understand the mechanism underlying discourse organization. This paper presents a new language resource, an ISO-based
annotated multilingual parallel corpus for discourse markers. The corpus comprises nine languages, Bulgarian, Lithuanian,
German, European Portuguese, Hebrew, Romanian, Polish, and Macedonian, with English as a pivot language. In order to
represent the meaning of the discourse markers, we propose an annotation scheme of discourse relations from ISO 24617-8
with a plug-in to ISO 24617-2 for communicative functions. We describe an experiment in which we applied the annotation
scheme to assess its validity. The results reveal that, although some extensions are required to cover all the multilingual data,
it provides a proper representation of discourse markers value. Additionally, we report some relevant contrastive phenomena
concerning discourse markers interpretation and role in discourse. This first step will allow us to develop deep learning methods
to identify and extract discourse relations and communicative functions, and to represent that information as Linguistic Linked
Open Data (LLOD)
Validation of language agnostic models for discourse marker detection
Using language models to detect or predict the
presence of language phenomena in the text has
become a mainstream research topic. With the
rise of generative models, experiments using
deep learning and transformer models trigger
intense interest. Aspects like precision of predictions,
portability to other languages or phenomena,
scale have been central to the research
community. Discourse markers, as language
phenomena, perform important functions, such
as signposting, signalling, and rephrasing, by
facilitating discourse organization. Our paper
is about discourse markers detection, a complex
task as it pertains to a language phenomenon
manifested by expressions that can occur as
content words in some contexts and as discourse
markers in others. We have adopted
language agnostic model trained in English to
predict the discourse marker presence in texts
in 8 other unseen by the model languages with
the goal to evaluate how well the model performs
in different structure and lexical properties
languages. We report on the process of
evaluation and validation of the model's performance
across European Portuguese, Hebrew,
German, Polish, Romanian, Bulgarian, Macedonian,
and Lithuanian and about the results
of this validation. This research is a key step
towards multilingual language processing
Acoustic separation of circulating tumor cells
Circulating tumor cells (CTCs) are important targets for cancer biology studies. To further elucidate the role of CTCs in cancer metastasis and prognosis, effective methods for isolating extremely rare tumor cells from peripheral blood must be developed. Acoustic-based methods, which are known to preserve the integrity, functionality, and viability of biological cells using label-free and contact-free sorting, have thus far not been successfully developed to isolate rare CTCs using clinical samples from cancer patients owing to technical constraints, insufficient throughput, and lack of long-term device stability. In this work, we demonstrate the development of an acoustic-based microfluidic device that is capable of high-throughput separation of CTCs from peripheral blood samples obtained from cancer patients. Our method uses tilted-angle standing surface acoustic waves. Parametric numerical simulations were performed to design optimum device geometry, tilt angle, and cell throughput that is more than 20 times higher than previously possible for such devices. We first validated the capability of this device by successfully separating low concentrations (~100 cells/mL) of a variety of cancer cells from cell culture lines from WBCs with a recovery rate better than 83%. We then demonstrated the isolation of CTCs in blood samples obtained from patients with breast cancer. Our acoustic-based separation method thus offers the potential to serve as an invaluable supplemental tool in cancer research, diagnostics, drug efficacy assessment, and therapeutics owing to its excellent biocompatibility, simple design, and label-free automated operation while offering the capability to isolate rare CTCs in a viable state.National Institutes of Health (U.S.) (Grant 1 R01 GM112048-01A1)National Institutes of Health (U.S.) (Grant 1R33EB019785-01)National Science Foundation (U.S.)Penn State Center for Nanoscale Science (Materials Research Science and Engineering Center Grant DMR-0820404)National Institutes of Health (U.S.) (Grant U01HL114476
LLODIA: A Linguistic Linked Open Data Model for Diachronic Analysis
editorial reviewedThis article proposes a linguistic linked open data model for diachronic analysis (LLODIA) that combines data derived from diachronic analysis of multilingual corpora with dictionary-based evidence. A humanities use case was devised as a proof of concept that includes examples in five languages (French, Hebrew, Latin, Lithuanian and Romanian) related to various meanings of the term “revolution” considered at different time intervals. The examples were compiled through diachronic word embedding and dictionary alignment
Recuperação hidrofóbica de polipropileno tratado por VUV ou plasma
Tratamentos superficiais por plasma e ultravioleta de vácuo (VUV) foram utilizados para introduzir grupos funcionais contendo oxigênio em amostras de polipropileno, com objetivo de modificar sua molhabilidade. Análises por ATR-FTIR, AFM e ângulo de contato (AC) foram utilizadas para analisar as mudanças químicas e físicas na superfície do PP em função do tempo. Os resultados mostraram que as mudanças na molhabilidade das amostras tratadas por VUV ocorreram principalmente devido à alteração química da superfície. Nas amostras tratadas por plasma, o envelhecimento ocorreu mais rapidamente que as amostras tratadas por VUV. Para ambos os tratamentos, provavelmente ocorreu um rearranjo das cadeias durante o envelhecimento, além de uma possível reticulação da superfície na amostra tratada por VUV
ISO-based Annotated Multilingual Parallel Corpus for Discourse Markers
CC-BY-NC 4.0Discourse markers carry information about the discourse structure and organization, and also signal local dependencies or
epistemological stance of speaker. They provide instructions on how to interpret the discourse, and their study is paramount
to understand the mechanism underlying discourse organization. This paper presents a new language resource, an ISO-based
annotated multilingual parallel corpus for discourse markers. The corpus comprises nine languages, Bulgarian, Lithuanian,
German, European Portuguese, Hebrew, Romanian, Polish, and Macedonian, with English as a pivot language. In order to
represent the meaning of the discourse markers, we propose an annotation scheme of discourse relations from ISO 24617-8
with a plug-in to ISO 24617-2 for communicative functions. We describe an experiment in which we applied the annotation
scheme to assess its validity. The results reveal that, although some extensions are required to cover all the multilingual data,
it provides a proper representation of discourse markers value. Additionally, we report some relevant contrastive phenomena
concerning discourse markers interpretation and role in discourse. This first step will allow us to develop deep learning methods
to identify and extract discourse relations and communicative functions, and to represent that information as Linguistic Linked
Open Data (LLOD)
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