{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,27]],"date-time":"2026-05-27T14:43:13Z","timestamp":1779892993898,"version":"3.53.1"},"reference-count":59,"publisher":"Emerald","issue":"3","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,3,3]]},"abstract":"<jats:sec>\n                    <jats:title>Purpose<\/jats:title>\n                    <jats:p>Stock market forecasters are focusing to create a positive approach for predicting the stock price. The fundamental principle of an effective stock market prediction is not only to produce the maximum outcomes but also to reduce the unreliable stock price estimate. In the stock market, sentiment analysis enables people for making educated decisions regarding the investment in a business. Moreover, the stock analysis identifies the business of an organization or a company. In fact, the prediction of stock prices is more complex due to high volatile nature that varies a large range of investor sentiment, economic and political factors, changes in leadership and other factors. This prediction often becomes ineffective, while considering only the historical data or textural information. Attempts are made to make the prediction more precise with the news sentiment along with the stock price information.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Design\/methodology\/approach<\/jats:title>\n                    <jats:p>This paper introduces a prediction framework via sentiment analysis. Thereby, the stock data and news sentiment data are also considered. From the stock data, technical indicator-based features like moving average convergence divergence (MACD), relative strength index (RSI) and moving average (MA) are extracted. At the same time, the news data are processed to determine the sentiments by certain processes like (1) pre-processing, where keyword extraction and sentiment categorization process takes place; (2) keyword extraction, where WordNet and sentiment categorization process is done; (3) feature extraction, where Proposed holoentropy based features is extracted. (4) Classification, deep neural network is used that returns the sentiment output. To make the system more accurate on predicting the sentiment, the training of NN is carried out by self-improved whale optimization algorithm (SIWOA). Finally, optimized deep belief network (DBN) is used to predict the stock that considers the features of stock data and sentiment results from news data. Here, the weights of DBN are tuned by the new SIWOA.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Findings<\/jats:title>\n                    <jats:p>The performance of the adopted scheme is computed over the existing models in terms of certain measures. The stock dataset includes two companies such as Reliance Communications and Relaxo Footwear. In addition, each company consists of three datasets (a) in daily option, set start day 1-1-2019 and end day 1-12-2020, (b) in monthly option, set start Jan 2000 and end Dec 2020 and (c) in yearly option, set year 2000. Moreover, the adopted NN\u00a0+\u00a0DBN\u00a0+\u00a0SIWOA model was computed over the traditional classifiers like LSTM, NN\u00a0+\u00a0RF, NN\u00a0+\u00a0MLP and NN\u00a0+\u00a0SVM; also, it was compared over the existing optimization algorithms like NN\u00a0+\u00a0DBN\u00a0+\u00a0MFO, NN\u00a0+\u00a0DBN\u00a0+\u00a0CSA, NN\u00a0+\u00a0DBN\u00a0+\u00a0WOA and NN\u00a0+\u00a0DBN\u00a0+\u00a0PSO, correspondingly. Further, the performance was calculated based on the learning percentage that ranges from 60, 70, 80 and 90 in terms of certain measures like MAE, MSE and RMSE for six datasets. On observing the graph, the MAE of the adopted NN\u00a0+\u00a0DBN\u00a0+\u00a0SIWOA model was 91.67, 80, 91.11 and 93.33% superior to the existing classifiers like LSTM, NN\u00a0+\u00a0RF, NN\u00a0+\u00a0MLP and NN\u00a0+\u00a0SVM, respectively for dataset 1. The proposed NN\u00a0+\u00a0DBN\u00a0+\u00a0SIWOA method holds minimum MAE value of (\u223c0.21) at learning percentage 80 for dataset 1; whereas, the traditional models holds the value for NN\u00a0+\u00a0DBN\u00a0+\u00a0CSA (\u223c1.20), NN\u00a0+\u00a0DBN\u00a0+\u00a0MFO (\u223c1.21), NN\u00a0+\u00a0DBN\u00a0+\u00a0PSO (\u223c0.23) and NN\u00a0+\u00a0DBN\u00a0+\u00a0WOA (\u223c0.25), respectively. From the table, it was clear that the RMSRE of the proposed NN\u00a0+\u00a0DBN\u00a0+\u00a0SIWOA model was 3.14, 1.08, 1.38 and 15.28% better than the existing classifiers like LSTM, NN\u00a0+\u00a0RF, NN\u00a0+\u00a0MLP and NN\u00a0+\u00a0SVM, respectively, for dataset 6. In addition, he MSE of the adopted NN\u00a0+\u00a0DBN\u00a0+\u00a0SIWOA method attain lower values (\u223c54944.41) for dataset 2 than other existing schemes like NN\u00a0+\u00a0DBN\u00a0+\u00a0CSA(\u223c9.43), NN\u00a0+\u00a0DBN\u00a0+\u00a0MFO (\u223c56728.68), NN\u00a0+\u00a0DBN\u00a0+\u00a0PSO (\u223c2.95) and NN\u00a0+\u00a0DBN\u00a0+\u00a0WOA (\u223c56767.88), respectively.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Originality\/value<\/jats:title>\n                    <jats:p>This paper has introduced a prediction framework via sentiment analysis. Thereby, along with the stock data and news sentiment data were also considered. From the stock data, technical indicator based features like MACD, RSI and MA are extracted. Therefore, the proposed work was said to be much appropriate for stock market prediction.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1108\/k-06-2021-0457","type":"journal-article","created":{"date-parts":[[2021,11,8]],"date-time":"2021-11-08T00:54:38Z","timestamp":1636332878000},"page":"748-773","source":"Crossref","is-referenced-by-count":31,"title":["Combined deep learning classifiers for stock market prediction: integrating stock price and news sentiments"],"prefix":"10.1108","volume":"52","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9178-3888","authenticated-orcid":true,"given":"Shilpa","family":"B L","sequence":"first","affiliation":[{"name":"GSSSIETW Computer Science and Engineering, , ,","place":["Mysuru, India"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shambhavi","family":"B R","sequence":"additional","affiliation":[{"name":"BMSCE Information Science and Engineering, , ,","place":["Bengaluru, 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