Interpretable Sequence Classification Via Prototype Trajectory

We propose a novel interpretable recurrent neural network (RNN) model, called ProtoryNet, in which we introduce a new concept of prototype trajectories. Motivated by the prototype theory in modern linguistics, ProtoryNet makes a prediction by finding the most similar prototype for each sentence in a text sequence and feeding an RNN backbone with the proximity of each of the sentences to the prototypes. The RNN backbone then captures the temporal pattern of the prototypes, to which we refer as prototype trajectories. The prototype trajectories enable intuitive, fine-grained interpretation of how the model reached to the final prediction, resembling the process of how humans analyze paragraphs. Experiments conducted on multiple public data sets reveal that the proposed method not only is more interpretable but also is more accurate than the current state-of-the-art prototype-based method. Furthermore, we report a survey result indicating that human users find ProtoryNet more intuitive and easier to understand, compared to the other prototype-based methods

Survey on fashion consumption trends of Vietnamese young people

Young people today are increasingly active and always like to try new trends in many fields. Especially in the field of fashion, mixing clothes is applied boldly and extremely diversely by young people. A fashion trend is an innovation in style that is adopted by a group of people at a certain time and area. Trends are formed based on factors: people, acceptance, time, and place. The article surveyed 300 young people of generation Z in Vietnam, the results showed that the number of fashion enthusiasts is very large, 70.7%, personal preference factors are the biggest influence on people’s fashion choices. According to the survey subjects, online fashion shopping is chosen by young people at a large rate. KOL (Key Opinion Leader) currently plays a very important role in building and developing fashion brands. Vietnamese fashion accounts for the highest proportion in choosing fashion products associated with product origin. The survey shows that they are most interested in “Product style and design”, “A neat appearance” ... The article also mentions some opinions about fashion and money that young people are willing and able to pay for per month. From there, the research team launched several exchanges and discussions with Vietnamese fashion businesses to meet consumer needs and build brands in the market

Learning Symmetrization for Equivariance with Orbit Distance Minimization

We present a general framework for symmetrizing an arbitrary neural-network architecture and making it equivariant with respect to a given group. We build upon the proposals of Kim et al. (2023); Kaba et al. (2023) for symmetrization, and improve them by replacing their conversion of neural features into group representations, with an optimization whose loss intuitively measures the distance between group orbits. This change makes our approach applicable to a broader range of matrix groups, such as the Lorentz group O(1, 3), than these two proposals. We experimentally show our method's competitiveness on the SO(2) image classification task, and also its increased generality on the task with O(1, 3). Our implementation will be made accessible at https://github.com/tiendatnguyen-vision/Orbit-symmetrize.Comment: 16 pages, 1 figur

A study on antibacterial, antioxidant, and hepatoprotective efficacy of Elephantopus scaber L.

Elephantopus scaber is an herb widely used in folk remedies in Vietnam, especially in the treatment of liver disease. However, scientific studies evaluating the activity and ability to treat the disease in a scientific way are still very limited. This study evaluated the antibacterial, antioxidant, acute toxicity and hepatoprotective efficacy of E. scaber extracts. The extracts restricted the growth of 6 types of bacteria, being particularly most effective against E. coli. It was found that the E. scaber leaves extract was more efficient than root, stem, flower, and whole plant extracts. DPPH assay showed that the flower extract had the highest antioxidant activity (EC50 = 60.29 μg/mL). The E. scaber extracts (>5000 mg/kg) also did not cause acute toxicity in mice. Additionally, the extracts effectively protected and recovered mice liver cells damaged by CCl4. The reduction of mice liver enzyme levels (AST and ALT) was similar between the extracts and silymarin. This hepatoprotective efficiency was also illustrated by the morphology and histology of the mice liver cells. The extracts healed mice liver cells by recovering the cell diameter, reducing inflammation swelling and increasing Hb concentration

Molecular identification of three Habenaria species from Binh Chau-Phuoc Buu Nature Reserve, Vietnam

The present provides molecular data for species of Habenaria diphylla (Nimmo) Dalzell, H. khasiana Hook.f. and H. rostellifera Rchb.f. collected from Binh Chau-Phuoc Buu Nature Reserve, Vietnam for the first time. Along with other DNA sequences from GenBank database, the phylogenetic trees for Habenaria species from Vietnam have been established

Mobile charging and data gathering in multiple sink wireless sensor networks: how and why

Recently, the problem of using efficient the number of mobile devices starting from multi-sink to go to charge and collect data of sensors such that sensors can work forever has received a great deal of attention in Wireless Rechargeable Sensor Network (WRSN). Many methods have been proposed for the WRSN systems such that mobile device can charge and collect data from sensors. However, most of previous works often require lots of mobile devices while the cost of mobile device is very high. In this paper, we investigate the Periodic Energy Replenishment and Data Collection with multiple sink (PERDCMS) problem and propose a new algorithm, called the Mobile Device Scheduling Algorithm (MDSA), to using limited number of mobile devices for charging and collecting data for sensors. Simulation results show that the MDSA has better performance than other method

The Impact of Digital Transformation on Customer Satisfaction to Digital Banking Service of Commercial Banks in Vietnam

The present study focuses on examining the interplay and correlation between the digital transformation process as assessed by the digital banking service quality components (Ease of use, Effectiveness, Interoperability, Privacy/ Security, Empathy, Responsiveness, Reliability, Service portfolios, Service charge) and customer satisfaction for digital banking services at commercial banks in Vietnam. The predictors (independent variables) for this study are the aforementioned service quality aspects and moderator is Service charge. The outcome variable (dependent variable) is customer satisfaction. The authors combined qualitative and quantitative research techniques to develop observed variables and assess the model's fit. This study can help banking leaders evaluate and improve the quality of digital banking services in the context of financial liberalization and globalization. Keywords: Digital transformation, Digital Banking, Banking service quality, Customer satisfaction DOI: 10.7176/EJBM/15-6-04 Publication date:March 31st 202

Enantioselective separation of ofloxacin by ligand exchange chromatography

A ligand exchange HPLC method for enantioseparation of ofloxacin enantiomers was developed by a using C8 stationary phase. Chromatographic separation was performed on a Zorbax-300SB-C8 column eluted with the mobile phase consisting of 15 % methanol in water containing 10mM phenylalanin and 5 mM CuSO4 at flow rate of 0.8 mL/min. The method was simple, rapid and suitable for routine analytical studies of ofloxacin enantiomers

Billolivia cadamensis (Gesneriaceae), a new species from Central Vietnam

Billolivia cadamensis (Gesneriaceae) is described as a new species from the central province of Quang Ngai, Vietnam. The new taxon is close to B. tichii but differs in shorter stem, abaxially glabrous bracts, calyx divided into 5 lobes to base, outside pubescent apical half of corolla tube, oblong or deltoid corolla lobes, dense hairs on apical 3/4 of the ovary and white corolla lobes. A key to all known species of Billolivia of Vietnam is given.  Received 3 November 2016, accepted 27 December 2016, published online 28 December 201

A new species of Typhonium (Araceae) from Vietnam

Typhonium obtusum is described as a new species endemic to Vietnam. It is unique in the genus in having an oblong-elliptic spathe limb with an obtuse apex and yellowish-greenish filiform staminodes with a down-curved acumen. The ecology, distribution and assessment of the conservation status of the new taxon, as well as a key to all known Typhonium species in Vietnam, are provided