Web-blogging sites such as Twitter and Facebook are heavily influenced by emotions, sentiments, and data in the modern era. Twitter, a widely used microblogging site where individuals share their thoughts in the form of tweets, has become a major source for sentiment analysis. In recent years, there has been a significant increase in demand for sentiment analysis to identify and classify opinions or expressions in text or tweets. Opinions or expressions of people about a particular topic, situation, person, or product can be identified from sentences and divided into three categories: positive for good, negative for bad, and neutral for mixed or confusing opinions. The process of analyzing changes in sentiment and the combination of these categories is known as "sentiment analysis." In this study, sentiment analysis was performed on a dataset of 90,000 tweets using both deep learning and machine learning methods. The deep learning-based model long-short-term memory (LSTM) performed better than machine learning approaches. Long short-term memory achieved 87% accuracy, and the support vector machine (SVM) classifier achieved slightly worse results than LSTM at 86%. The study also tested binary classes of positive and negative, where LSTM and SVM both achieved 90% accuracy.

Anticancer peptides play a vital role in the treatment of cancer, due to that it has gained a lot of attention. Several machine learning and deep learning algorithms were developed for the prediction of anticancer peptides. Machine learning algorithms involves features extraction from the dataset and then model is trained to make predictions. In machine learning algorithms features extraction and the training of the model takes a lot of time and efforts, this is a complex process for biologists and biochemists. On the other hand deep learning algorithms require a large amount of dataset for training and accurate predictions. This study has proposed a deep learning algorithm which can be trained on smaller dataset because it uses hyperparameter optimization framework for the accurate predictions of anticancer peptides. The deep learning model has outperformed all the other algorithms and achieved the optimal 99% Acc and 0.982 MCC on Main dataset, 98% Acc and 0.972 MCC on Alternative dataset. The code is available at Github for validation purposes [33].

GrpahDB stores data in nodes and edges, nodes represent entities and edges represents the relationship between entities. The role of GraphDB in the blockchain is described as blockchain uses blocks and these blocks are connected through hashcode to store the data. In cipher language, hash is the irreversible conversion of data which makes it impossible to decrypt. Blockchain also uses proof of work system, in which data is entered only if maximum people allows verifies it. And once anything entered into ledger, it cannot be altered or deleted. The paper has provided how hashing & indexing, query processing, transaction management, data management and data distribution is done for GraphDB into ledger, with previously done work and libraries to build and manage GraphDB blockchain.