24.1.16

Rethinking H2O: Water Molecule Discovery Contradicts Textbook Models

Groundbreaking research shows that water molecules at the saltwater surface behave differently than previously thought, offering new perspectives for environmental science and technology. Textbook models will need to be re-drawn after a team of researchers found that water molecules at the surfac

https://scitechdaily.com/rethinking-h2o-water-molecule-discovery-contradicts-textbook-models/

https://www.nature.com/articles/s41557-023-01416-6✔️

Merchant Category Codes (MCC)

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* Merchant category codes(MCCs) are 4-digit numbers assigned to different types of businesses * MCCs are used of a variety of purpose in credit and debit cad transactions, including tax reporting and calculating consumers’ cash back rewards * MCCs can also affect how much a merchant must pay when it accepts credit or debit cards for payment.

https://www.investopedia.com/terms/m/merchant-category-codes-mcc.asp

What Is a 1099 Tax Form?

A 1099 form is a federal tax form that's used to report types of income other than wages from a job (which are reported on W-2 forms). The payer, such as businesses, supplies this information to both the IRS and the income's recipient.

There are a variety of different 1009 forms in use today. Form 1099-INT, for example, is used to report interest income, while a 1099-DIV is for dividend income. When businesses pay non-employees for services, they must report that on a 1099-NEC if it exceeds a certain amount, currently $600.5

goroutine

a lightweight thread managed by the Go runtime

How we switched to Java 21 virtual threads and got deadlock in TPC-C for PostgreSQL

We revise some fundamental background and highlight an important concern behind Java 21 virtual threads: deadlocks might be unpredictable

https://blog.ydb.tech/how-we-switched-to-java-21-virtual-threads-and-got-deadlock-in-tpc-c-for-postgresql-cca2fe08d70b

DHP MODEL

DHP(Dual Heuristic Programming)

DHP 方法通常归属于强化学习[3 ], 利用两个神经网络来进行学习控制: 动作网络产生控制动作, 评价者网络对动作网络的性能进行评估. 评价者网络用于估计 cost2to2go 函数对于状态的梯度, 其训练使微分Bellman 方程的误差最小; 动作网络的训练则使当前状态的 co st2to2go 函数最小. 相比于其他 ADP 方法, Prokhorov[4 ] 指出 DH P 方法更容易实现. 并且由于 DH P 方法的评价者网络直接估计cost2to2go 函数对于状态的梯度, 更容易得到cost2to2go 函数对于控制量的梯度. 因而DHP 方法的学习过程也相对较快. Prokhorov[4, 5 ] 给出了DHP方法基于回归神经网络的实现,Lendaris[9 ] 则给出了DHP 方法基于多层感知器网络的实现.

http://kzyjc.alljournals.cn/kzyjc/article/abstract/2006-10-2<基于复杂过程简化模型的DHP学习控制>

SSPA algorithm Stochastic Shortest Path Algorithm

记忆算法的用途：自动化地跟踪知识的记忆状态，并安排高效的复习计划

问题	答案
遗忘曲线刻画了什么？	随着时间推移，知识在我们记忆中的保留情况
在没有进行复习的情况下，记忆保留的下降速度呈什么变化？	先快后慢
在复习之后，新的遗忘曲线相比旧的遗忘曲线，有什么区别？	新的遗忘曲线更平，即遗忘得更慢
间隔重复的复习安排有什么特点？	复习被分散到未来不同的时间点
间隔重复如何区别对待不同记忆程度的内容	生疏的材料用较短的间隔，熟悉的材料用较长的间隔
记忆算法在间隔重复中扮演什么样的角色？	跟踪记忆状态，自动安排复习计划