News recommendation has been a must-have service for most mobile device users to know what has happened in the world. In this paper, we focus on recommending latest news articles to new users, which consists of the new user coldstart challenge and the new item (i.e., news article) coldstart challenge, and is thus termed as dual cold-start recommendation (DCSR). As a response, we propose a solut...

Graph-based recommender systems (GRSs) analyze the structural information available in graphical representation of data to make better recommendations, especially when direct user-item relation is sparse. Ranking-oriented GRSs mostly use preference (or rank) for measuring node similarities, from which they can infer recommendations using neighborhood-based methods. In this paper, we propose PGR...

This study investigated the utility of all of the above (AOTA) as a test option in multiple-choice items. It aimed at estimating item fit, item difficulty, item discrimination, and guess factor of such a choice. Five reading passages of the Key English Test (KET, 2010) were adapted. The test was reconstructed in 2 parallel forms: Test 1 did not include the abovementioned alternative, whereas Te...

Many applications, particularly in Computer-Aided Design (CAD), require large amounts of memory, limiting the size of problems which can be handled. This paper presents a new mechanism which exploits the large amount of memory available in a cluster of workstations for programs that are designed in an object-oriented manner. The memory required for each object may be allocated in other machines...

We consider the one-dimensional skiving stock problem which is also known as the dual bin packing problem: find the maximum number of items with minimum length L that can be constructed by connecting a given supply of m ∈ N smaller item lengths l1, . . . , lm with availabilities b1, . . . , bm. For this optimization problem, we present three new models and investigate their relationships, espec...

Purpose – To examine what search capabilities are desirable in web-based scholarly e-book systems. Design/methodology/approach – To present the author’s opinion and interpretation about what search capabilities are desirable in web-based scholarly e-book systems through investigating studies of information seeking behavior and exploring current multimedia and hypertext techniques. Findings – Th...

This paper presents a methodology for the enhancement of a hypertext version of a textbook. The enhancement over the textual version of the textbook is achieved by automatically inserting links between text excerpt of the textbook and item in the subject index produced by the author of the textbook. These links enable accessing parts of the textbook that have not been speci cally indexed by the...

Sensor network technology is pushing towards integration into the business world. By using sensor node hardware to augment real life business items it is possible to capture the world and support processes where they actually happen. Many problems of the business logic running our world can be efficiently implemented “on the item”. In order for these smart items to couple back to the virtualize...

Exam has been used enormously as an assessment tool to measure students’ academic performance in most of the higher institutions in KSA. A good quality of a set of constructed items/questions on mid and final exam would be able to measure both students’ academic performance and their cognitive skills. We adopt Rasch Model to evaluate the reliability and quality of the first mid exam questions f...

o‰»41⁄4f1⁄2^3⁄4^¿3ÀMÁg1⁄4l»4ÂMÃnÄkÀMÃ&1⁄2 business, where talented merchants could tell by the look and feel of an item whether or not it was a winner. In order to be successful, retailing today can no longer be just a product-oriented business. According to Blischok, it must be a Å3Æ Ç4ÈMÉlÊ1ËCÌ'ÍgÉlÌ4ÎMËCÏUÈMË&Ð business and superior customer service comes from superior knowledge of the custo...