Special Exercise: Business Intelligence and Analytics: Research Directions 17

Special Exercise: Business Intelligence and Analytics: Research Directions 17

Business Intelligence and Analytics: Research Directions

EE-PENG LIM, School of Information Systems, Singapore Management University HSINCHUN CHEN, Eller College of Management, University of Arizona, Tucson GUOQING CHEN, School of Economics and Management, Tsinghua University, China

Business intelligence and analytics (BIA) is about the development of technologies, systems, practices, and applications to analyze critical business data so as to gain new insights about business and markets. The new insights can be used for improving products and services, achieving better operational efficiency, and fostering customer relationships. In this article, we will categorize BIA research activities into three broad research directions: (a) big data analytics, (b) text analytics, and (c) network analytics. The article aims to review the state-of-the-art techniques and models and to summarize their use in BIA applications. For each research direction, we will also determine a few important questions to be addressed in future research.

Categories and Subject Descriptors: H 2.8 [Database Management]: Database Applications—Data mining

General Terms: Algorithm, Design, Performance

Additional Key Words and Phrases: Business intelligence, business analytics

ACM Reference Format: Lim, E.-P., Chen, H., Chen, G. 2012. Business intelligence and analytics: Research directions. ACM Trans. Manage. Inf. Syst. 3, 4, Article 17 (January 2013), 10 pages. DOI:http://dx.doi.org/10.1145/2407740.2407741


1.1. Introduction

Business intelligence and analytics (BIA), a term coined in 1989, has gained much traction in the IT practitioner community and academia over the past two decades. BIA refers to: (1) the technologies, systems, practices, and applications that (2) analyze critical business data to (3) help an enterprise better understand its business and market.

Traditionally, business intelligence (BI) has been used as an umbrella term to de- scribe concepts and methods to improve business decision making by using fact-based support systems. BI also includes the underlying architectures, tools, databases, ap- plications, and methodologies. BI’s major objectives are to enable interactive and easy access to diverse data, enable manipulation and transformation of these data, and provide business managers and analysts the ability to conduct appropriate analyses and perform actions [Turban et al. 2008; Wixom et al. 2011]. Successful BI initiatives have been reported for major industries, from healthcare and airlines, to major IT and

This work is supported by the National Research Foundation under its International Research Centre @ Singapore Funding Initiative and administered by the IDM Programme Office. Authors’ addresses: E.-P. Lim, School of Information Systems, Singapore Management University, Singapore; email: eplim@smu.edu.sg; H. Chen, Eller College of Management, University of Arizona, Tucson; email: hchen@eller.arizona.edu; G. Chen, School of Economics and Management, Tsinghua University, Beijing, China; email: chengq@sem.tsinghua.edu.cn. Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies show this notice on the first page or initial screen of a display along with the full citation. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is per- mitted. To copy otherwise, to republish, to post on servers, to redistribute to lists, or to use any component of this work in other works requires prior specific permission and/or a fee. Permissions may be requested from Publications Dept., ACM, Inc., 2 Penn Plaza, Suite 701, New York, NY 10121-0701 USA, fax +1 (212) 869-0481, or permissions@acm.org. c© 2013 ACM 2158-656X/2013/01-ART17 $15.00 DOI:http://dx.doi.org/10.1145/2407740.2407741

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telecommunication firms [Anderson-Lehman et al. 2004; Carte et al. 2005; Turban et al. 2008].

As a datacentric approach, BI heavily relies on various advanced data collec- tion, extraction, and analysis technologies [Turban et al. 2008; Watson and Wixom 2007]. These technologies are collectively known as business analytics (BA). Data warehousing is often considered the foundation of BI. Design of data marts and tools for extraction, transformation, and load (ETL) are essential for converting and integrating enterprise-specific data. Database query, online analytical processing (OLAP), and advanced reporting tools are often adopted next, to explore important data characteristics. Business performance management (BPM) using scorecards and dashboards can be used to analyze and visualize various employee performance metrics. In addition to these well-established business analytics functions, advanced knowledge discovery using data and text mining can be adopted for association rule mining, database segmentation and clustering, anomaly detection, and predictive modeling in various information systems and human resources, accounting, finance, and marketing applications. Given that modern business intelligence has to heavily depend upon data analytics, it is timely to adopt business intelligence and analytics (BIA) as the preferred combined term.

Since about 2004, Web intelligence, Web analytics, Web 2.0, social networking, and microblogging sites have begun to usher in a new and exciting era of Business Intelli- gence 2.0 (BI 2.0) research [Nelson 2010]. In BI 2.0, an immense amount of company, industry, product, and consumer information can be gathered from both enterprise databases and the Web. These data are then organized and visualized through various knowledge mapping, Web portal, and multilingual retrieval techniques [Chung et al. 2005; Marshall et al. 2004]. By analyzing customer clickstream data logs, Web ana- lytics tools such as Google Analytics provide a trail of the user’s online activities and reveal the user’s browsing and purchasing patterns. Web site design, product place- ment optimization, customer transaction analysis, and product recommendations can be easily accomplished through Web analytics.

More recently, the social media phenomena have created an abundance of user- generated contents from various online sites such as forums, product review and rating sites, Web blogs, social networking sites, media sharing sites (for photos and videos), and even virtual worlds. By amassing a large volume of timely feedback and opinions from diverse social media users and analyzing them using social media analytics, one can derive a wide range of social and business insights much needed for social policy formulation, customer relationship management, and product innovation. Many be- lieve Web analytics and social media analytics present a unique opportunity for busi- ness researchers to treat the market as a conversation between businesses and cus- tomers instead of traditional business-to-customer marketing. Advanced information extraction, topic identification, opinion mining, and time-series analysis techniques can be applied to traditional business information and the new BI 2.0 contents for various accounting, finance, and marketing applications, such as enterprise risk as- sessment and management, credit rating and analysis, corporate event analysis, stock and portfolio performance prediction, viral marketing analysis, and so on.

1.2. Emerging Trends

Industry Trends. In a press release dated 2 April 2012, Gartner reported that BI is the highest priority technology item for CIOs in 2012. It also estimated that BI rev- enue will reach $7.8 billion in 2011, which is an increase of 16% over that in 2010 [Gartner 2012]. Through BI initiatives, businesses are gaining insights from the grow- ing volumes of transaction, product, inventory, customer, competitor, and industry data generated by enterprise-wide applications such as enterprise resource planning (ERP),

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customer relationship management (CRM), supply-chain management (SCM), knowl- edge management, collaborative computing, Web analytics, and so on. According to a USA Today article, IBM spent $14B in BI in 24 acquisitions in five years and its BI revenue reached $9B in 2010 [Acohido 2010]. IBM expects to employ 10,000 BI soft- ware developers, 8000 BI consultants, and 200 BI mathematicians. The demand for BIA professionals in the US will also be 50 to 60 percent larger than its projected supply by 2018 [Manyika et al. 2011).

Data Trends. Over the past decade the “Big Data” era has quietly descended on many communities, from governments and e-commerce to health and sports organiza- tions [Beyer 2011]. With the overwhelming amount of Web, social media, mobile, and sensor-generated data arriving at a terabyte and even petabyte scale [The Economists 2010], new science, discovery, and insights can be obtained from the highly detailed, contextualized, and rich contents of relevance to businesses and organizations. Enter- prise database systems, search systems, advanced data, text and Web analytics are becoming important for turning data into actionable knowledge and intelligence. As the data volume is large, the analytics can only be possible if we have highly efficient algorithms and software.

Businesses have been collecting and processing traditional structured payroll, em- ployee, supplier, and product information for years, often via relational database management systems (RDBMS). Some large corporations have also resorted to the transaction-friendly column-based DBMS and the more powerful parallel DBMS. More recently, businesses and organizations are facing a new tsunami of unstructured text contents and user log information collected from e-commerce sites and via many customer-facing social media platforms (e.g., forums, Twitter, Facebook). Text data are fast becoming a major part of enterprise data, especially for multinational corpora- tions and e-commerce firms. Increasingly, multimedia contents such as images, photos (Flickr), and videos (YouTube) can also contain significant product- or customer-related information. Text data can be in different languages but there is so far no good transla- tion technology that handles all of these languages. Understanding text and extracting knowledge from it remain challenging research tasks.

Platform Technology Trend. Several platform technology trends are relevant to busi- ness analytics [IBM 2011]. Among them, cloud computing and mobile computing are of critical important. Coincidentally, the former has a major impact on the design of busi- ness analytics servers while the latter changes the way business applications reach out to consumers.

A cloud computing platform is one that is built upon a large number of low cost computers to meet the needs of storing and computing big data in BIA applications. Instead of focusing on cloud computing platform and infrastructure development (such as the Google App Engine, the Amazon EC2, Microsoft Azure), there are great opportu- nities for cloud application development in various critical industry sectors including: government, defense, security, health, education, and entertainment. Recent advances include many applications rapidly spreading across a wide variety of other sectors such as banking, telecommunications, energy, retailing, and so on, witnessing technological and service development in large data centers and different clouds (not only public clouds but also private/enterprise ones).

Mobile computing is firmly established in the marketplace and offers a means for IT professional growth as more and more organizations build mobile business applications. Android, iOS (iPhone and iPad), and Windows 8 are the key mobile development platforms that compete with one another for users and application developers. Services built on mobile devices also provide many opportunities for application development and use, which may vary significantly depending upon the

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types of the devices. Examples include the browsing and e-reading functionalities of tablets and regular mobile phones, which are used by different customer groups (e.g., middle-class users vs. farmers/low-income users) and often involve different technical algorithms and features.

1.3. Objectives

BIA research has to cope with rapid changes in the industry, data, and technology land- scapes. As database and data analytics companies, as well as IT consulting firms con- tinue to introduce new BIA products and new features into their existing BIA products, there are also parallel multiple threads of data analytics research activities happening in research labs and universities. Most university research in BIA topics happens in the business schools and computer science departments.

In this article, we will categorize these research activities into three broad research directions: (a) big data analytics, (b) text analytics, and (c) network analytics. The ob- jectives here are to review the state-of-the-art techniques and models and to give a quick summary of their use in BIA applications even though they may not have been widely adopted. For each research direction, we will also determine a few important questions to be addressed in future research. It is our hope that these research ques- tions will help steering future work extending BIA capabilities as well as bridging the gaps between research techniques and industry solutions.

Due to the page limit, this article does not seek to cover all relevant BIA topics and case studies. Readers should refer to the cited references for more detailed informa- tion. For BIA works in the area of data mining and machine learning, one can refer to the conference proceedings of the ACM SIGKDD Conference, International Confer- ence on Machine Learning (ICML), World Wide Web (WWW), ACM Conference on Web Search and Data Mining (WSDM), and International AAAI Conference on Weblogs and Social Media (ICWSM), as well as journals such as IEEE Transactions on Knowledge and Data Engineering (TKDE), ACM Transactions on Knowledge Discovery from Data (TKDD), ACM Transactions on Intelligent Systems and Technology (TIST), and ACM Transactions on Web. There are also a lot of great reading materials about BIA in the management science discipline. They include ACM Transactions on Management Information Systems (TMIS), Information Systems Research (ISR), Management Sci- ence, Marketing Science, and the Proceedings of the National Academy of Sciences (PNAS).


Data analytics using Hadoop. Inspired in part by a 2004 Google white paper about its use of the parallel MapReduce techniques, Hadoop is a Java-based software frame- work for distributed processing of data-intensive transformation and analytics. The top three commercial database suppliers–Oracle, IBM, and Microsoft–have all adopted Hadoop recently. The open source Apache Hadoop has also gained significant traction for business analytics, including Chukwa for data collection, HBase for distributed data storage, Hive for data summarization and ad hoc querying, and Mahout for data mining [Henschen 2011; Watson 2012].

Hadoop has been shown to be highly efficient for processing big data that are particu- larly structured in applications that involve computation of simple summary statistics. Hadoop however has not yet been widely used for complex data analysis that involves many record comparisons and massive data movement among servers. For BIA that involves unstructured data, new advanced text analytics, image indexing, and ad hoc one-time processing are also yet to be developed in the distributed Hadoop or MapRe- duce environments.

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Big data can also be presented in the form of graphs with nodes representing users or product items, and edges representing social relationships, information flows, and product adoptions. To gain insights about consumer behavior in these graphs, we need to mine graphs or conduct graph-mining. To compute the diameter of big graph data, Kang et al. [2011] proposed HADI (HAdoop DIameter and radii estimator), which that runs efficiently on the Hadoop/MapReduce systems. Other than computing such sim- ple graph statistics, very few graph mining works have been carried out using the Hadoop/MapReduce framework and these are clearly important future research topics to be investigated.

Research Questions. From the information systems research perspective, one also has seek to answer the following key questions in future big data analytics research.

(a) Given a diverse set of business analytics application requirements, how can one tell if a Hadoop/MapReduce framework should be used for a given business analytics application? To answer this question, one has to understand the strengths and limitations of the framework much better as more analytics models and algorithms are developed. Should the Hadoop/MapReduce framework be only applicable to a subset of analytics operations, can we still leverage its strengths by applying the framework partially, perhaps in data preprocessing or postprocessing?

(b) What is the cost of migrating legacy data and applications from existing servers to the Hadoop/MapReduce framework? Switching from traditional ap- plication/database servers to the Hadoop/MapReduce framework is considered a major infrastructure change as it involves moving legacy data from standard re- lational databases to possibly non-SQL ones, creating new indexing schemes, as well as reimplementation of existing applications. In addition, existing BIA devel- opers and analysts also have to be trained to use this new framework. The time and financial costs associated with these changes should be well understood and accurately estimated. Unfortunately, to the best of our knowledge, there has not been any research that addresses these costs. It is therefore a challenge for busi- nesses to embrace BIA using Hadoop/MapReduce even if the expected benefits can be determined.


From Search Engines to Enterprise Search Systems. Since its humble beginning in information retrieval (IR) systems in the 70s, search engines have evolved into a complex system that consists of fast, distributed crawling, efficient inverted indexing, inlink-based page ranking, and search logs analytics. Much of the text processing and indexing components have been deployed in text-based enterprise search and docu- ment management systems. More recent advances in this area include in-memory and real-time processing for large-scale or dynamic contents. Other efforts include seman- tic search either for a search engines’ functionality or for an enterprise information service, which considers text analytics in meaning via semantic match technologies, as well as in relevance via semantic transfer measures [Agarwal et al. 2006; Guha et al. 2003].

From Information Extraction to Question Answering Systems. The field of natural language processing (NLP) has also advanced significantly over the past decade, lever- aging the power of Big Data (for training) and statistical NLP (for building language models). In addition to the traditional text representations such as bag of words, phrases, entities, and relationships, NLP techniques have been successfully adopted for event and topic detection, machine translation, and more recently in question- answering (Q/A) systems. IBM Watson is a good example of an advanced Q/A system

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that adopts sophisticated analytics to understand the meaning and context of human language. Many promising Q/A system application areas have been identified, includ- ing education, health, and defense [IBM 2011].

Another related direction in information extraction, as well as in search engines, is the representation of search queries and outcomes in light of different user prefer- ences. In addition to existing page-rank based practices [Page et al. 1999], demands for other representation schemes become more usual and meaningful. An example is the display of diversified query results for various online product reviews. Another ex- ample is representation of compact search outcomes (that are both less redundant and more information rich) for mobile Web queries and advertisements.

From Sentiment Analysis to Opinion Mining. Opinion mining, a subdiscipline within data mining and computational linguistics, refers to the computational techniques for extracting, classifying, understanding, and assessing the opinions expressed in vari- ous online news sources, social media comments, and other user-generated content. Sentiment analysis is often used in opinion mining to identify sentiment, affect, sub- jectivity, and other emotional states in online text. The advent of Web 2.0 and social media contents has stirred much excitement and created abundant opportunities for understanding the opinions of the general public and consumers towards social events, political movements, company strategies, marketing campaigns, and product prefer- ences [Abbasi and Chen 2008; Chen and Zimbra 2010].

Research Questions. As search engine, information extraction and sentiment anal- ysis technologies become more mature, future text analytics research has to seek an- swers to the following more challenging research questions.

(a) How can one perform text analytics in noisy unstructured data? Most text analytics research has been carried out on well written text documents including news, com- pany, and government reports. In Web and social media, the user generated text often contains grammar and spelling errors, emoticons, mixed languages, abbre- viations, and other idiosyncrasies. The standard text analytics solutions therefore do not work perfectly on these data. The short message length imposed by popular microblogging sites (e.g., Twitter) further limits the amount of context available to understand the text content [Lin et al. 2011]. To address these challenging text analytics tasks, we need more out-of-the-box research approaches. For example, Duolingo is a new crowdsourcing site that recruits a large number of users to man- ually perform translation of text as part of their efforts to learn new languages [Savage 2012].1

(b) How can text analytics be performed for stream data? Stream data are con- tinuously generated by online sensors or applications, so as to be received and processed by BIA applications in real time. While there have been many data analytics techniques developed for structured data streams, to perform quick numerical computations, research works on unstructured data streams are very scarce [Gaber et al. 2005]. With the increasing amount of text data gathered from web and social media, the future of data stream research will have to focus on processing text streams extracting and summarizing them for easy consumption as well as detecting their underlying events and topics.


Traditionally, customer and transactional data are treated as independent records in company databases. This view, however, has to change, given that records are often


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connected in one way or another. In social media and social network sites, users are connected with one another by a variety of links. These links may represent friend- ships, trusts, message interactions, shared communities, and other forms of relation- ships. In an online auction business, a buyer is linked to sellers who sell her some items. A bidding transaction is linked to a purchase transaction when both involve the same bidding item. The links among records turn the latter into network data from which new insights can be discovered about the customers, their consumption patterns, and the relationships among them. Leveraging these new insights, one can develop new businesses and services to meet customers’ preferences. For example, in a telecommunications company, phone calls among customers may allow us to infer relationships that may be used to keep the customers from churning.

Network analytics is a nascent research area. Some of the important topics in net- work analytics research are the following.

Link mining. In link mining, one seeks to discover links between nodes of a net- work.2 Within a network, nodes may represent customers, end users, products, and/or services. The links between nodes may represent social relationships, collaboration, email exchanges, or product adoptions. Not all of these links can be observed, as the network data may be incomplete and some of the links may only appear in the future. To recover the missing links and to predict new links, we need a variety of link mining techniques.

One can conduct link mining using only topology information [Liben-Nowell and Kleinberg 2007]. Techniques such as common neighbors, Jaccard’s coefficient, Adamic Adar measure, and Katz measure are popular for predicting missing or future links. The common assumption behind these techniques is that nodes having higher topo- logical proximity between them are more likely to have links. These topology-based techniques clearly do not work well for new nodes joining the network. Link mining accuracy can be further improved when the node and link attributes are considered. This topology and attribute approach to link mining can also be used to predict links for new nodes.

Community Detection. User communities are formed in a network for a variety of reasons. Users may link with other users due to their family relationships, friend- ships, or similar product adoption patterns. These relationships bring users together to form dense clusters within a network. Due to the homophily effect, we see many sim- ilar users who tend to be linked to one another, however this does not happen among dissimilar users. Detecting the user communities in networks therefore helps to un- cover the common preferences and foci shared by users in the same communities. For example, in banking applications, user communities may represent different customer segments. It is thus important to design different product and service packages for the targeted customer segments.

Community detection is a very active research area. Several good survey papers about the topic have been published [Fortunato 2010; Porter et al. 2009]. By repre- senting networks as graphs, one can apply graph partitioning to find a minimal cut to obtain dense subgraphs representing user communities. The main idea here is to divide a network into multiple subgraphs such that links between the resultant sub- graphs are minimal. In more recent works, some network level goodness measure such as modularity is introduced to determine how well the network is partitioned. A cen- trality measure such as betweenness is then computed for each network link, and

2Link mining may be defined to cover a wider range of research problems [Getoor and Diehl 2005]. In this article, we choose a more focused definition.

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links with higher centrality values are removed iteratively until we obtain a good par- titioned network that yields the optimal goodness value.

Social Recommendation. Retail industries in developed countries are becoming dig- ital as consumers spend more time and money on the Web. In addition to large B2C and C2C e-businesses such as Amazon.com, Apple iTunes, Dell.com, and E-Bay.com, many other companies have created a presence on the Web publicizing and selling their products. While Geographic constraint does not apply to businesses operating on the Web, consumers are spoiled with many retailer and product options. For a business to succeed in this e-business environment, knowing the consumers well and recom- mending the right products to the right consumers are of utmost importance. To this end, collaborative filtering has been used to recommend a new product to a user based on the products purchased by other users sharing similar purchase patterns with the target user [Herlocker et al. 1999]. Collaborative filtering works well when the tar- get users have previously purchased some products. It however fails to yield good recommendations when the target user is new. This is also known as the cold-start user problem.

Network data about consumers fortunately helps to address the cold-start user prob- lem. The users who are linked to the target user may serve as very good proxies of the target user. One can therefore add the social aspect to collaborative filtering by rec- ommending to the target user those products purchased by users directly linked to the target user. This is also known as social recommendation, an emerging research topic. There are several new social recommendation methods that introduce social fac- tors into existing methods. For example, Ma et al. [2008] extended matrix factorization with social link weights for rating prediction. Chua et al. [2011] determine social cor- relations between users and use them to improve prediction of item adoptions, using the Latent Dirichlet Allocation (LDA) model.

Research Questions. As network data become important in profiling users, commu- nities, and social recommendations, one has to address hard research questions in network analytics.

(a) How can the existing network analytics techniques be extended to cope with multi- dimensional networks? The vast majority of existing network analytics techniques have been developed for simple networks consisting of one type of nodes and one type of edges. Networks, nevertheless, are often multidimensional, as nodes may be of different types (e.g., buyers, sellers, products, etc.) and links may also be labeled differently (e.g., buyer-purchases-item, seller-sells-item, buyer-is-friend-of- buyer, buyer-rates-seller, etc.) [Contractor 2009]. Link mining in multidimensional networks will therefore have to consider the semantics of different node and link types when links are to be predicted. Similarly, community detection and social recommendation will have to perform differently in multidimensional networks, as user nodes of different types may interact differently based on the different types of links [Sun and Han 2012].

(b) How can one distinguish social influence from selection in networks? Social rec- ommendation and marketing are important applications using network analyt- ics, and both assume that users near to one another in a network share similar preferences. This homophily effect can be attributed to two mechanisms, namely self selection and social influence. The former says that people sharing similar at- tributes tend to form social links with one another. The latter says that linked users may influence each other to adopt similar preferences or attributes. Distin- guishing the two mechanisms is currently a hard research problem as shown in Shalizi and Thomas [2011]. Nevertheless, as determining the cause of homophily

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will allow one to design appropriate incentives or recommendation approaches to achieve business goals, there are still much interest in this research topic for the next few years.


Business intelligence/business analytics have attracted attention from enterprises, the computing industry, and the research community due to the availability of big data and new business needs. While several off-the-shelf BIA tools and systems are already available in the market, there is much room for further research and development due to the emergence of new data genres, computing paradigms, and mobile technologies. This article walks through the research trends of BIA in three areas, namely big data analytics, text analytics, and network analytics. The article also identifies important research questions that will drive future BIA research in these areas. Meanwhile, we witness vibrant research activity both in industry labs and universities. Enterprises are also spearheading initiatives to strengthen their BIA capabilities through acqui- sition of technologies and collaboration with researchers. Notable examples of such BIA research collaboration include the Living Analytics Research Center, jointly es- tablished by the Singapore Management University and Carnegie Mellon University to discover consumer and social insights from company datasets through experiment- driven analytics, and the Center for Business Analytics at the NYU Stern School of Business. In this collaboration model, researchers have direct access to real datasets and develop both descriptive and predictive models about user preferences and be- havior. With the increasing need for business innovation through BIA and the many intellectually challenging research problems waiting to be addressed, we believe more research collaboration models between industry and academia will emerge, accelerat- ing the pace of research discoveries and technology transfers.


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Received March 2012; revised August 2012; accepted October 2012

ACM Transactions on Management Information Systems, Vol. 3, No. 4, Article 17, Publication date: January 2013.

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