Business Intelligence & Decision Support Systems Final Exam 2023

7. In the chapter's opening vignette, IBM's computer named Watson outperformed human game champions on the game show Jeopardy! - Answer- true 7. Detecting lies from text transcripts of conversations is a future goal of text mining as current systems achieve only 50% accuracy of detection. - Answer- false 7. In the opening vignette, the architectural system that supported Watson used all the following elements EXCEPT - Answer- a core engine that could operate seamlessly in another domain without changes. 7. According to a study by Merrill Lynch and Gartner, what percentage of all corporate data is captured and stored in some sort of unstructured form? - Answer- 85% 7. Which of these applications will derive the LEAST benefit from text mining? - Answer- sales transaction files 7. In text mining, stemming is the process of - Answer- reducing multiple words to their base or root 7. All of the following are challenges associated with natural language processing EXCEPT - Answer- dividing up a text into individual words in English. 7. In text mining, which of the following methods is NOT used to reduce the size of a sparse matrix? - Answer- normalizing word frequencies 7. In the research literature case study, the researchers analyzing academic papers extracted information from which source? - Answer- the paper abstract 7. In sentiment analysis, which of the following is an implicit opinion? - Answer- The customer service I got for my TV was laughable. 7. What do voice of the market (VOM) applications of sentiment analysis do? - Answer- They examine customer sentiment at the aggregate level. 7. How is objectivity handled in sentiment analysis? - Answer- It is identified and removed as facts are not sentiment. 7. In text analysis, what is a lexicon? - Answer- a catalog of words, their synonyms, and their meanings 7. What types of documents are BEST suited to semantic labeling and aggregation to determine sentiment orientation? - Answer- small- to medium-sized documents 7. Inputs to speech analytics include all of the following EXCEPT - Answer- written transcripts of calls to service centers. 7. Identifying the target of an expressed sentiment is difficult for all the following reasons EXCEPT - Answer- strong sentiments may be generated by a computer, not a person. 7. In the Blue Cross Blue Shield case study, speech analytics were used to identify "confusion" calls by customers. What was true about these calls? - Answer- They were not documented by customer service reps for speech analytics. 7. Because the term-document matrix is often very large and rather sparse, an important optimization step is to reduce the ________ of the matrix. - Answer- dimensionality 7. Where ________ appears in text, it comes in two flavors: explicit, where the subjective sentence directly expresses an opinion, and implicit, where the text implies an opinion. - Answer- sentiment 7. Among the significant advantages associated with the ________ approach to linguistic modeling is the method's ability to maintain a high degree of accuracy no matter what the quality of the audio source, and its incorporation of conversational context through the use of structured queries. - Answer- phonetic indexing and search 8. Participating in social media is so new that it is still optional for most companies in the United States. - Answer- false 8. Search engine optimization (SEO) techniques play a minor role in a Web site's search ranking because only well-written content matters. - Answer- false 8. What does Web content mining involve? - Answer- analyzing the unstructured content of Web pages 8. What does Web structure mining involve? - Answer- analyzing the universal resource locators in Web pages 8. In the extremist groups case study, what approach is used to discover the ideology and fund raising of extremist groups through their Web sites? - Answer- content analysis 8 .Search engines do not search the entire Web every time a user makes a search request, for all the following reasons EXCEPT - Answer- most users are not interested in searching the entire Web. 8. Breaking up a Web page into its components to identify worthy words/terms and indexing them using a set of rules is called - Answer- parsing the documents 8. PageRank for Webpages is useful to Web developers for which of the following reasons? - Answer- it gives developers insight into Web user behavior. 8. In general, what is the best kind of Web traffic to a Web site? - Answer- organic web traffic 8. Clickstream analysis is most likely to be used for all the following types of applications EXCEPT - Answer- hiring new functional area managers. 8. What are the two main types of Web analytics? - Answer- off-site and on-site Web analytics 8. Web site usability may be rated poor if - Answer- Web site visitors download few of your offered PDFs and videos. 8. Understanding which keywords your users enter to reach your Web site through a search engine can help you understand - Answer- how well visitors understand your products. 8. A voice of customer (VOC) strategy involves all of the following EXCEPT - Answer- connecting captured insights to unstructured data in order to take action. 8.What is one major way that Web-based social media is the same as publishing media? - Answer- They can both reach a global audience. 8. What is one major way in which Web-based social media differs from traditional publishing media? - Answer- They have different costs to own and operate. 8. What does descriptive analytics for social media do? - Answer- It helps identify your followers. 8. What does advanced analytics for social media do? - Answer- It examines the content of online conversations. 8. Web pages contain both unstructured information and ________, which are connections to other Web pages. - Answer- hyperlinks 8. Analyzing server ________ files is the traditional way to collect Web site information for on-site Web analytics. - Answer- log 9 .Modeling can be viewed as a science in its entirety. - Answer- false 9.In the Midwest ISO opening vignette, the solution provided by the model's output determined the best output level to be produced by each power plant. - Answer- true 9. Goal seeking is roughly the opposite of "what-if" analysis. - Answer- true 9. Using modeling for decision support can currently achieve all of the following EXCEPT - Answer- replace strategy formulation at top levels of the organization. 9. Environmental scanning is important for all of the following reasons EXCEPT - Answer- environments have greater impact on a model than the organization does. 9. Today, it is critical for companies to consider - Answer- (all of these) how to get products to the right customer, how to sell products at the right place, how to package products in the right format 9. Models can be built with the help of human knowledge and expertise. Another source of help in building these models is - Answer- classification and clustering methods. 9. What is an influence diagram? - Answer- a graphical representation of a model 9. Spreadsheets are particularly useful for all of the following reasons EXCEPT - Answer- they easily import and manipulate massive databases. 9. Which of the following is NOT a component of a linear programming problem? - Answer- internal metrics 9. Managers in organizations typically have - Answer- multiple goals that need to be simultaneously or jointly optimized. 9. The question "What will total earnings be if we reduce our inventory stocking costs by 10%?" is a type of - Answer- what-if analysis 9 .The question "How many servers will be needed to reduce the waiting time of restaurant customers to less than 9 minutes?" is a type of - Answer- goal-seeking analysis 9. Decision trees are best suited to solve what types of problems? - Answer- problems with a single goal 9. In handling uncertainty in decision modeling, the optimistic approach assumes - Answer- the best possible outcome of each alternative will occur. 9. Which of the following statements about expected utility is true? - Answer- Used in decision making, it can bring huge risk to a small startup with limited resources. 9. Which of the following statements about the analytic hierarchy process (AHP) is true? - Answer- It can handle multiple criteria and goals.