User-Oriented Preference Toward a Recommender System

            في الوقت الحاضر، من الملائم لنا استخدام محرك بحث للحصول على المعلومات المطلوبة. لكن في بعض الأحيان يسيء فهم المعلومات بسبب التقارير الإعلامية المختلفة. نظام التوصية (RS) شائع الاستخدام في كل الأعمال لأنه يمكن أن يوفر معلومات للمستخدمين التي ستجذب المزيد من الإيرادات للشركات. ولكن أيضًا ، في بعض الأحيان ، يوصي النظام المستخدمين بالمعلومات غير الضرورية. لهذا السبب ، قدم هذا البحث بنية لنظام التوصية التي يمكن أن تستند إلى التفضيل الموجه للمستخدم. هذا النظام يسمى UOP-RS. لجعل UOP-RS بشكل كبير، ركزهذا البحث على معلومات السينما وتجميع قاعدة بيانات الأفلام من موقع IMDb الذي يوفر معلومات متعلقة بالأفلام والبرامج التلفزيونية ومقاطع الفيديو المنزلية وألعاب الفيديو والمحتوى المتدفق الذي يجمع أيضًا العديد من التقييمات والمراجعات من المستخدمين. حلل البحث أيضًا بيانات المستخدم الفردي لاستخراج ميزات المستخدم. بناءً على خصائص المستخدم ، وتقييمات / درجات الفيلم ، ونتائج الأفلام ، تم بناء نموذج UOP-RS. في تجربتنا ، تم استخدام 5000 مجموعة بيانات أفلام IMDb و 5 أفلام موصى بها للمستخدمين. تظهر النتائج أن النظام يمكنه إرجاع النتائج في 3.86 ثانية ولديه خطأ 14٪ على السلع الموصى بها عند تدريب البيانات على أنها K = 50. في نهاية هذه الورقة خلص إلى أن النظام يمكن أن يوصي بسرعة مستخدمي السلع التي يحتاجون إليها. سوف يمتد النظام المقترح للاتصال بنظام Chatbot بحيث يمكن للمستخدمين جعل الاستعلامات أسرع وأسهل من هواتفهم في المستقبل.            Nowadays, it is convenient for us to use a search engine to get our needed information. But sometimes it will misunderstand the information because of the different media reports. The Recommender System (RS) is popular to use for every business since it can provide information for users that will attract more revenues for companies. But also, sometimes the system will recommend unneeded information for users. Because of this, this paper provided an architecture of a recommender system that could base on user-oriented preference. This system is called UOP-RS. To make the UOP-RS significantly, this paper focused on movie theatre information and collect the movie database from the IMDb website that provides information related to movies, television programs, home videos, video games, and streaming content that also collects many ratings and reviews from users. This paper also analyzed individual user data to extract the user’s features. Based on user characteristics, movie ratings/scores, and movie results, a UOP-RS model was built. In our experiment, 5000 IMDb movie datasets were used and 5 recommended movies for users. The results show that the system could return results on 3.86 s and has a 14% error on recommended goods when training data as . At the end of this paper concluded that the system could quickly recommend users of the goods which they needed.  The proposed system will extend to connect with the Chatbot system that users can make queries faster and easier from their phones in the future

Spontaneous Formation of One-dimensions Ripples in Transit to Highly Ordered Two-dimensional Herringbone Structures Through Sequential and Unequal Biaxial Mechanical Stretching

The authors report the formation of various submicron wrinkle patterns and their transition from one-dimensional (1D) ripples to two-dimensional (2D) herringbone structures on poly(dimethylsiloxane) films. Using mechanical force they can separately control the amount and timing of strain applied to the substrate on both planar directions (either simultaneously or sequentially), which appears to be critical to maneuver the pattern formation in real time. They demonstrate reversible transitions from flat to 1D ripple, to ripple with bifurcation, to ripple/herringbone mixed features, and to well-controlled formation of a highly ordered zigzag-based 2D herringbone structures

The Effects of Language Difference on Operational Performance and Satisfaction with B2B E-Marketplace Interface

This study integrated the user interface and information content of the business-to-business (B2B) electronic marketplace (e-marketplace) with language to analyze whether language differences affect the definition of good interface design and the information content that should be provided via an e-marketplace. An experimental design was adopted for collecting data from tasks, and then the Questionnaire for User Interface Satisfaction (QUIS) was used to ascertain how satisfied subjects were with regard to using the B2B e-marketplace interfaces. Study results showed that the language, the e-marketplace interface the subject used, and a combination of the two predict a person’s operational performance and satisfaction with a B2B e-marketplace. This study’s results provide a better understanding of whether B2B e-marketplace service providers should develop interfaces based on specific languages

Strain responsive concave and convex microlens arrays

We report the fabrication of single-component, strain responsive microlens arrays with real-time tunability. The concave lens array is fabricated by patterning hard oxide layer on a bidirectionally prestretched soft elastomer, polydimethylsiloxane PDMS followed by confined buckling upon release of the prestrain. The convex microlens array is replica molded from the concave lenses in PDMS. Due to difference in lens formation mechanisms, the two types of lenses show different tunable range of focal length in response to the applied strain: large focal length change is observed from the concave microlens array, whereas that from the convex microlens array is much smaller

Sensor Data Fusion for Body State Estimation in a Hexapod Robot With Dynamical Gaits

We report on a hybrid 12-dimensional full body state estimator for a hexapod robot executing a jogging gait in steady state on level terrain with regularly alternating ground contact and aerial phases of motion. We use a repeating sequence of continuous time dynamical models that are switched in and out of an extended Kalman filter to fuse measurements from a novel leg pose sensor and inertial sensors. Our inertial measurement unit supplements the traditionally paired three-axis rate gyro and three-axis accelerometer with a set of three additional three-axis accelerometer suites, thereby providing additional angular acceleration measurement, avoiding the need for localization of the accelerometer at the center of mass on the robot’s body, and simplifying installation and calibration. We implement this estimation procedure offline, using data extracted from numerous repeated runs of the hexapod robot RHex (bearing the appropriate sensor suite) and evaluate its performance with reference to a visual ground-truth measurement system, comparing as well the relative performance of different fusion approaches implemented via different model sequences

A leg configuration sensory system for dynamical body state estimates in a hexapod robot

We report on a novel leg strain sensory system for the autonomous robot RHex [Saranli U. et al., 2001] implemented upon a cheap, high performance local wireless network [H. Komsuoglu, 2002]. We introduce a model for RHex\u27s 4-bar legs [E.Z. Moore, 2001] relating leg strain to leg kinematic configuration in the body coordinate frame. We compare against ground truth measurement the performance of the model operating on real-time leg strain data generated under completely realistic operating conditions. We introduce an algorithm for computing six degree of freedom body posture measurements in world frame coordinates from the outputs of the six leg configuration models, together with a priori information about the ground. We discuss the manner in which such stance phase configuration estimates will be fused with other sensory data to develop the continuous time full body state estimates for RHex

A Leg Configuration Measurement System for Full-Body Pose Estimates in a Hexapod Robot

We report on a continuous-time rigid-body pose estimator for a walking hexapod robot. Assuming at least three legs remain in ground contact at all times, our algorithm uses the outputs of six leg-configuration sensor models together with a priori knowledge of the ground and robot kinematics to compute instantaneous estimates of the 6-degrees-of-freedom (6-DOF) body pose. We implement this estimation procedure on the robot RHex by means of a novel sensory system incorporating a model relating compliant leg member strain to leg configuration delivered to the onboard CPU over a customized cheap high-performance local wireless network. We evaluate the performance of this algorithm at widely varying body speeds and over dramatically different ground conditions by means of a 6-DOF vision-based ground-truth measurement system (GTMS). We also compare the odometry performance to that of sensorless schemes—both legged as well as on a wheeled version of the robot—using GTMS measurements of elapsed distance