基于深度表示学习的个性化电影推
Luyao Li1, Hong Huang1, Qianqian Li2
1Department of Computer Science, Hunan University of Technology, Zhuzhou, China.
PeerJ. Computer science
|August 7, 2023
概括
本研究引入了个性化推的深信网络 (DBN) 和软max回归模型,显著提高了准确性,克服了电影推中的数据稀疏性和冷启动问题.
科学领域:
- 人工智能的人工智能
- 机器学习 机器学习
- 数据科学数据科学数据科学
背景情况:
- 传统的推算法与稀疏的数据和冷启动问题作斗争.
- 现有的方法不能充分利用用户项目评级矩阵进行有效的推.
研究的目的:
- 提出一种使用深度信念网络 (DBN) 和软max回归的新型个性化推方法.
- 解决传统算法在处理数据稀疏性和冷启动场景方面的局限性.
- 提高个性化内容推的准确性和效率,特别是在电影推系统中.
主要方法:
- 利用深度信念网络 (DBN) 来学习用户和项目的深度表示,优化用户-项目的评级矩阵.
- 采用软max回归来通过特征空间内的学习类别来预测用户对象交互概率.
- 整合了负采样机制,以提高推的有效性.
主要成果:
- 拟议的DBN和软max回归模型在与SVD等基线模型相比显示出更高的性能.
- 获得了98%的平均绝对误差 (MAE),超过了现有的方法.
- 在不同尺寸的Douban和MovieLens数据集上验证了高精度和概括能力.
结论:
- 开发的个性化推方法有效地克服了数据稀疏性和冷启动挑战.
- 整合DBN和softmax回归提供了一个强大的方法,用于准确和高效的个性化建议.
- 负采样机制对于提高推质量和用户满意度至关重要.
相关概念视频
Relative Motion Analysis - Velocity
391
A stroke engine has a slider-crank mechanism that converts rotational motion from the crank into linear motion of the slider or vice versa. This mechanism consists of three main parts: the crank, the connecting rod, and the slider.
When an external force is exerted, it sets the crank into a rotational movement. This, in turn, instigates the motion of the connecting rod, leading to what is referred to as a general plane motion. This process involves two key points - point A on the connecting rod...
When an external force is exerted, it sets the crank into a rotational movement. This, in turn, instigates the motion of the connecting rod, leading to what is referred to as a general plane motion. This process involves two key points - point A on the connecting rod...
391
Transformers
1.1K
A device that transforms voltages from one value to another using induction is called a transformer. A transformer consists of two separate coils, or windings, wrapped around the same soft iron core. However, they are electrically insulated from each other.
The iron core has a substantial relative permeability. Therefore, the magnetic field lines generated due to the current in one winding are almost entirely confined within the core, such that the same magnetic flux permeates each turn of both...
The iron core has a substantial relative permeability. Therefore, the magnetic field lines generated due to the current in one winding are almost entirely confined within the core, such that the same magnetic flux permeates each turn of both...
1.1K
Relative Motion Analysis using Rotating Axes
486
Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame.
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
However, to express the relative position of point B relative to point A, an additional frame of reference, denoted as x'y', is necessary. This additional frame not only translates but also rotates relative to the fixed frame, making it...
486
End Point Prediction: Gran Plot
381
A Gran plot is used to predict the equivalence volume or endpoint of a potentiometric or acid-base titration without reaching the endpoint. Typically, titration data is collected as a function of the titrant's volume up to a point less than the equivalence volume and then transformed into a linear format. The straight line is extended to the x-axis, indicating the necessary titrant volume to achieve the equivalence point.
For potentiometric titration, the Gran plot is created by plotting...
For potentiometric titration, the Gran plot is created by plotting...
381
Absolute Motion Analysis- General Plane Motion
240
Visualize a drone, with its propellers spinning rapidly, hovering mid-air. The fascinating movements and operations of this drone can be comprehended by applying the principle of general plane motion.
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
240
Deconvolution
188
Deconvolution, also known as inverse filtering, is the process of extracting the impulse response from known input and output signals. This technique is vital in scenarios where the system's characteristics are unknown, and they must be inferred from the observable signals.
Deconvolution involves several mathematical techniques to derive the impulse response. One common approach is polynomial division. In this method, the input and output sequences are treated as coefficients of...
Deconvolution involves several mathematical techniques to derive the impulse response. One common approach is polynomial division. In this method, the input and output sequences are treated as coefficients of...
188


