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Assessing the affective impact of social navigation tools in facilitating exploratory search
No full textAssessing the affective impact of social navigational tools in facilitating exploratory search
No full text本研究旨在檢視社會性導覽工具，包括推薦書籍、使用者標籤與書籍評論等，對網路書店探索性檢索經驗愉悅性的影響。本研究也探討社會性導覽工具對認知與決策行為的影響，以及探索性檢索經驗愉悅性對網路書店使用者之再訪意願的影響。為評估探索性檢索經驗的愉悅程度，本文納入沉浸理論的概念來反映使用者的情感層面經驗，並以實驗法進行實證研究。
本研究結論歸納如下:
1.當網路書店使用者進行探索性檢索時，網路書店介面若提供社會性導覽工具，將顯著地提升使用經驗的愉悅性。無論於量表分數或受試者自評結果層面，本研究皆顯示提供社會性導覽工具的網路書店帶給使用者更愉悅的使用經驗。
2. 本研究結果顯示探索性檢索經驗之愉悅性能某種程度地預測使用者對網路書店的再訪意願。當使用經驗愉悅性較高時，受試者願意再度造訪的意願便隨著升高，故當網路書店提供促使使用者陷入沉浸狀態的社會性導覽工具時，受試者的再訪意願較高。
3. 本研究發現社會性導覽工具對認知與決策行為有顯著的影響。當受試者使用提供社會性導覽工具的網路書店進行檢索時，他們的決策信心和新知獲得程度皆較使用未提供社會性導覽工具的網路書店時高。除此之外，利用提供社會性導覽工具的網路書店檢索時，使用者點擊社會性導覽工具和關鍵字檢索的次數亦較高。相對於好用性研究將滑鼠點擊與關鍵字檢索視為檢索成本的看法，本研究認為在探索性檢索任務中，社會性導覽工具反而有助於提升網路書店中的探索性活動。The purpose of the study is to examine whether social navigational tools enhance the affective aspects of user experience when they engage in exploratory search with online bookstores. Theory of flow is applied to assess the affective aspects of exploratory search experience. Furthermore, the study also investigates the impact of users’ affective experience on revisit intention, and the impact of social navigational tools on users’ information processing as well as decision making behavior, in terms of decision confidence, gained knowledge and search effort.
Some major findings are as follows. Firstly, social navigational tools significantly affect the perceived pleasure derived from the search experience. Tasks completed with the interface equipped with social navigational tools led to higher degree of pleasure, and more subjects self-reported entering the flow state while using the interface with social navigational tools than the number of subjects who experienced flow when using the interface without social navigational tools.
Secondly, participants who experienced higher degree of pleasure, as measured by flow experience in this research, also have stronger revisit intention. The finding supports the postulation that an online service more conducive to flow experience will also obtain higher degree of customer loyalty.
Lastly, navigational tools exert evident impact on information processing and decision making behaviors. As subjects engaged in exploratory search with the interface equipped with social navigational tools, both their decision confidence and knowledge gained increased. More mouse clicks and searches were also recorded when the social navigational tools are made available. While these measures were conventionally considered, from usability perspective, indications of undesirable search costs, it is argued that the results show that the social navigational tools were more conducive to higher level of user online activities. In other words, they promoted higher level of exploratory activities
Evaluating a Metadata-based Term Suggestion Interface for PubMed with Real Users with Real Requests
No full textThis paper reports results of an evaluation study of MAP (Multi-faceted Access to PubMed), a metadata induced query suggestion interface for PubMed bibliographic search.
A novel evaluation methodology was used to address the challenges involved in evaluating an IIR (Interactive Information Retrieval) system such as the MAP interface. The most significant aspect of this methodology is that, instead of using assigned tasks common in traditional IR evaluation, it asks real users with real search requests to search with real systems in an experimental setting. Several performance measures were created based on which comparisons were made between MAP and PubMed baseline. MAP was shown to perform better in several of these measures, especially when the search requests had not been attempted before.
The finding pointed to search characteristics as an important intervening variable in IIR evaluation. The advantages of and potential threats to our methodology were also discussed
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
An Exploratory Study of Academic Library Users' Decision-Making Process
No full text在決定是否取用資訊時，我們往往需要依賴片面的資訊或是線索（cues）來判斷作品的內容及相關性。本研究試圖由認知心理學的透鏡理論的觀點，探究大學圖書館讀者在不同搜尋情境中所依賴的作品線索，以及這些線索對於讀者決策的相對重要性。本研究採取問卷調查法的方式以探究讀者的搜尋情境和借書判斷之間的關係。研究結果發現讀者對於借書判斷的信心會因搜尋的情境不同而異。搜尋情境由三個面向區分：一為讀者對搜尋主題的熟悉程度；二為借閱作品的目的，如：自我成長、課業需要、研究、以及教學；三為借閱作品是否為已知項目。研究結果發現讀者借出館藏的途徑，因搜尋情境不同而有所不同，而他們對不同線索的依賴程度也因搜尋情境而異。在結論的部分，我們討論了研究結果對於資訊尋求理論發展的意涵，並提出改進圖書館服務的建議，本文建議圖書館應提供更多的瀏覽機會來促成資訊偶遇，以及以更豐富書目資訊的內容來協助讀者決策。The paper reported results from a user survey study conducted in an academic library setting that aimed at investigating readers’ borrowing decision making process. The research is motivated by adaptive decision making theory and Len’s Model in cognitive psychology. Specifically, the research sets out the explore readers’ reliance on various information sources when facing different search situations. The results show that readers adaptively make use of information sources in their immediate information environment and those in the library setting to learn about and judge the value of a title. It is hoped that the results will lend support to the provision of richer bibliographic information and connectivity among works to facilitate user judgment and browse-based access to library collection. The theoretical implications of the study on the development of human information seeking are also discussed
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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