改进版Rosenbrock方法及其结论

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"这篇论文由陈新泉撰写,主要探讨了一种Rosenbrock方法的变体及其在解决非线性优化问题中的应用。Rosenbrock方法是一种无约束非线性优化的间接搜索方法,但存在一定的局限性。文中提出的新变体方法在保留原有方法的基础上,改进了其旋转方向策略,能够解决一些Rosenbrock方法无法处理的问题。尽管该变体在某些参数设定下仍然是确定性的旋转方向方法,但它在两个连续正交方向组之间如何旋转的方向群理论上有深入的阐述。关键词包括Rosenbrock的旋转方向方法、确定性旋转方向方法以及夹角余弦等。" 本文是关于非线性优化领域的首发论文,重点关注Rosenbrock方法的改良。Rosenbrock方法是无约束优化中的一种经典算法,它通过一系列方向的迭代来逼近函数的最小值。然而,这种方法在处理某些特定问题时可能会遇到困难,例如陷入局部最小值或收敛速度较慢。 作者陈新泉提出了一种新的变体方法,这个方法类似于Rosenbrock的旋转方向策略,但针对原方法的不足进行了优化。新方法能够解决Rosenbrock方法无法有效处理的一些问题,这表明它可能具有更广泛的适用性和更强的全局优化能力。尽管这个变体在某些情况下仍采用固定的旋转策略,但通过调整参数,它可以适应更复杂的情况。 文章的核心在于对这个新变体的数学分析,包括旋转方向组之间的转换规则。论文中给出了关于这个变体方法的定理和推论,这些理论成果有助于读者理解如何在两个连续的正交方向组之间进行有效的方向旋转,从而更高效地探索解决方案空间。此外,关键词中的“夹角余弦”可能是指在优化过程中,新旧方向之间的角度关系对优化效果的影响,这在确定搜索步长和方向更新时起着关键作用。 这篇论文不仅提出了一种改进的优化算法,还提供了深入的理论支持,对于理解和改进无约束非线性优化问题的求解策略具有重要的学术价值。通过这种变体方法,研究者和工程师可能能够解决更复杂的优化问题,提高算法的效率和精度。

A problem occurred configuring root project '��ҵ'. > Could not resolve all artifacts for configuration ':classpath'. > Could not resolve org.springframework.boot:spring-boot-gradle-plugin:3.1.0. Required by: project : > org.springframework.boot:org.springframework.boot.gradle.plugin:3.1.0 > No matching variant of org.springframework.boot:spring-boot-gradle-plugin:3.1.0 was found. The consumer was configured to find a runtime of a library compatible with Java 8, packaged as a jar, and its dependencies declared externally but: - Variant 'apiElements' capability org.springframework.boot:spring-boot-gradle-plugin:3.1.0 declares a library, packaged as a jar, and its dependencies declared externally: - Incompatible because this component declares an API of a component compatible with Java 17 and the consumer needed a runtime of a component compatible with Java 8 - Variant 'javadocElements' capability org.springframework.boot:spring-boot-gradle-plugin:3.1.0 declares a runtime of a component, and its dependencies declared externally: - Incompatible because this component declares documentation and the consumer needed a library - Other compatible attributes: - Doesn't say anything about its target Java version (required compatibility with Java 8) - Doesn't say anything about its elements (required them packaged as a jar) - Variant 'mavenOptionalApiElements' capability org.springframework.boot:spring-boot-gradle-plugin-maven-optional:3.1.0 declares a library, packaged as a jar, and its dependencies declared externally: - Incompatible because this component declares an API of a component compatible with Java 17 and the consumer needed a runtime of a component compatible with Java 8 - Variant 'mavenOptionalRuntimeElements' capability org.springframework.boot:spring-boot-gradle-plugin-maven-optional:3.1.0 declares a runtime of a library, packaged as a jar, and its dependencies declared externally: - Incompatible because this component declares a component compatible with Java 17 and the consumer needed a component compatible with Java 8 - Variant 'runtimeElements' capability org.springframework.boot:spring-boot-gradle-plugin:3.1.0 declares a runtime of a library, packaged as a jar, and its dependencies declared externally: - Incompatible because this component declares a component compatible with Java 17 and the consumer needed a component compatible with Java 8 - Variant 'sourcesElements' capability org.springframework.boot:spring-boot-gradle-plugin:3.1.0 declares a runtime of a component, and its dependencies declared externally: - Incompatible because this component declares documentation and the consumer needed a library - Other compatible attributes: - Doesn't say anything about its target Java version (required compatibility with Java 8) - Doesn't say anything about its elements (required them packaged as a jar) * Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

2023-05-31 上传

ERROR: No matching variant of com.android.tools.build:gradle:7.4.1 was found. The consumer was configured to find a runtime of a library compatible with Java 8, packaged as a jar, and its dependencies declared externally, as well as attribute 'org.gradle.plugin.api-version' with value '7.5' but: - Variant 'apiElements' capability com.android.tools.build:gradle:7.4.1 declares a library, packaged as a jar, and its dependencies declared externally: - Incompatible because this component declares an API of a component compatible with Java 11 and the consumer needed a runtime of a component compatible with Java 8 - Other compatible attribute: - Doesn't say anything about org.gradle.plugin.api-version (required '7.5') - Variant 'javadocElements' capability com.android.tools.build:gradle:7.4.1 declares a runtime of a component, and its dependencies declared externally: - Incompatible because this component declares documentation and the consumer needed a library - Other compatible attributes: - Doesn't say anything about its target Java version (required compatibility with Java 8) - Doesn't say anything about its elements (required them packaged as a jar) - Doesn't say anything about org.gradle.plugin.api-version (required '7.5') - Variant 'runtimeElements' capability com.android.tools.build:gradle:7.4.1 declares a runtime of a library, packaged as a jar, and its dependencies declared externally: - Incompatible because this component declares a component compatible with Java 11 and the consumer needed a component compatible with Java 8 - Other compatible attribute: - Doesn't say anything about org.gradle.plugin.api-version (required '7.5') - Variant 'sourcesElements' capability com.android.tools.build:gradle:7.4.1 declares a runtime of a component, and its dependencies declared externally: - Incompatible because this component declares documentation and the consumer needed a library - Other compatible attributes: - Doesn't say anything about its target Java version (required compatibility with Java 8) - Doesn't say anything about its elements (required them packaged as a jar) - Doesn't say anything about org.gradle.plugin.api-version (required '7.5')

2023-06-12 上传

这一段讲的是什么:Abstract—A recent trojan attack on deep neural network (DNN) models is one insidious variant of data poisoning attacks. Trojan attacks exploit an effective backdoor created in a DNN model by leveraging the difficulty in interpretability of the learned model to misclassify any inputs signed with the attacker’s chosen trojan trigger. Since the trojan trigger is a secret guarded and exploited by the attacker, detecting such trojan inputs is a challenge, especially at run-time when models are in active operation. This work builds STRong Intentional Perturbation (STRIP) based run-time trojan attack detection system and focuses on vision system. We intentionally perturb the incoming input, for instance by superimposing various image patterns, and observe the randomness of predicted classes for perturbed inputs from a given deployed model—malicious or benign. A low entropy in predicted classes violates the input-dependence property of a benign model and implies the presence of a malicious input—a characteristic of a trojaned input. The high efficacy of our method is validated through case studies on three popular and contrasting datasets: MNIST, CIFAR10 and GTSRB. We achieve an overall false acceptance rate (FAR) of less than 1%, given a preset false rejection rate (FRR) of 1%, for different types of triggers. Using CIFAR10 and GTSRB, we have empirically achieved result of 0% for both FRR and FAR. We have also evaluated STRIP robustness against a number of trojan attack variants and adaptive attacks. Index Terms—Trojan attack, Backdoor attack

2023-07-24 上传