• AIPaper,  机器学习算法

    dtaianomaly A Python library for time series anomaly detection

    Abstract

    dtaianomaly is an open-source Python library for time series anomaly detection, designed to bridge the gap between academic research and real-world applications. Our goal is to (1) accelerate the development of novel state-of-the-art anomaly detection techniques through simple extensibility; (2) offer functionality for large-scale experimental validation; and thereby (3) bring cutting-edge research to business and industry through a standardized API, similar to scikit-learn to lower the entry barrier for both new and experienced users. Besides these key features, dtaianomaly offers (1) a broad range of built-in anomaly detectors, (2) support for time series preprocessing, (3) tools for visual analysis, (4) confidence prediction of anomaly scores, (5) runtime and memory profiling, (6) comprehensive documentation, and (7) cross-platform unit testing.

    The source code of dtaianomaly, documentation, code examples and installation guides are publicly available at https://github.com/ML-KULeuven/dtaianomaly.

    Keywords: Python, open source, time series, anomaly detection, data mining

    原文地址

  • AI大模型,  人工智能前沿

    Dify简介

    Dify 是一款开源的大语言模型(LLM) 应用开发平台。它融合了后端即服务(Backend as Service)和 LLMOps 的理念,使开发者可以快速搭建生产级的生成式 AI 应用。即使你是非技术人员,也能参与到 AI 应用的定义和数据运营过程中。
    由于 Dify 内置了构建 LLM 应用所需的关键技术栈,包括对数百个模型的支持、直观的 Prompt 编排界面、高质量的 RAG 引擎、稳健的 Agent 框架、灵活的流程编排,并同时提供了一套易用的界面和 API。这为开发者节省了许多重复造轮子的时间,使其可以专注在创新和业务需求上。

    为什么使用 Dify?
    你或许可以把 LangChain 这类的开发库(Library)想象为有着锤子、钉子的工具箱。与之相比,Dify 提供了更接近生产需要的完整方案,Dify 好比是一套脚手架,并且经过了精良的工程设计和软件测试。
    重要的是,Dify 是开源的,它由一个专业的全职团队和社区共同打造。你可以基于任何模型自部署类似 Assistants API 和 GPTs 的能力,在灵活和安全的基础上,同时保持对数据的完全控制。
    我们的社区用户对 Dify 的产品评价可以归结为简单、克制、迭代迅速。 ——路宇,Dify.AI CEO
    希望以上信息和这份指南可以帮助你了解这款产品,我们相信 Dify 是为你而做的(Do It For You)。

    Dify 能做什么?
    Dify 一词源自 Define + Modify,意指定义并且持续的改进你的 AI 应用,它是为你而做的(Do it for you)。
    创业,快速的将你的 AI 应用创意变成现实,无论成功和失败都需要加速。在真实世界,已经有几十个团队通过 Dify 构建 MVP(最小可用产品)获得投资,或通过 POC(概念验证)赢得了客户的订单。
    将 LLM 集成至已有业务,通过引入 LLM 增强现有应用的能力,接入 Dify 的 RESTful API 从而实现 Prompt 与业务代码的解耦,在 Dify 的管理界面是跟踪数据、成本和用量,持续改进应用效果。
    作为企业级 LLM 基础设施,一些银行和大型互联网公司正在将 Dify 部署为企业内的 LLM 网关,加速 GenAI 技术在企业内的推广,并实现中心化的监管。
    探索 LLM 的能力边界,即使你是一个技术爱好者,通过 Dify 也可以轻松的实践 Prompt 工程和 Agent 技术,在 GPTs 推出以前就已经有超过 60,000 开发者在 Dify 上创建了自己的第一个应用。

    详情

  • AI英语

    Demystifying Higher Education with AI

    By Paul Dorney, Chief Technology Officer at Gravyt

    Higher education is at a crossroads. Budgets are tightening. Student needs are growing more complex. And the pressure to demonstrate measurable outcomes—graduation rates, job placement, lifelong value—has never been higher.

    As institutions grapple with these demands, artificial intelligence isn’t some futuristic buzzword anymore—it’s a practical, proven tool that’s helping colleges and universities rise to the challenge. It’s doing the real work: powering personalized support, enabling timely intervention, and helping leaders make better decisions faster.

    This shift reflects a broader evolution in how we think about higher education. Students today expect their college experience to be as responsive and seamless as every other part of their lives. If a streaming service can recommend the right show, or a bank can alert you before you overdraft, why shouldn’t your university know when you might be struggling—and help before it’s too late?

    Institutions that embrace AI aren’t chasing hype—they’re stepping up to meet a new standard. And if higher education is serious about delivering on its promise to help students succeed, then AI can’t just be an afterthought. It has to be core to the strategy.

    One of the biggest challenges on campuses today is capacity. Student services teams are being asked to do more with fewer resources. Advisors, financial aid officers, and support staff want to offer high-quality, human-centered help, but they’re underwater. At the same time, students expect (and deserve) immediate, personalized guidance. They don’t want to wait days for a reply to a simple question. They need answers in real time, and they want to feel like someone is paying attention. That’s where AI can make an immediate impact.

    With tools like intelligent chatbots and workflow automation, institutions can free up staff from repetitive, low-impact tasks. AI can triage student questions—whether it’s about FAFSA deadlines, transfer credits, or how to drop a class—24/7. It can route more complex issues to the right person or flag high-priority cases for intervention. This doesn’t replace human connection—it makes it more possible. Staff gain back time to focus on what matters most: nuanced, high-touch conversations that build trust and drive outcomes.

    AI also increases the consistency of support. When responses are automated, they don’t vary based on who’s working that day or what time the question comes in. And for students who are first-generation, working full-time, or balancing caregiving responsibilities, that kind of accessibility can be the difference between persistence and giving up.

    It’s not just about convenience—it’s about equity. AI helps ensure that every student, regardless of their schedule or background, has access to the timely help they need to succeed.

    Most institutions know that improving retention is both a financial imperative and a moral one. But in practice, schools still rely on reactive approaches: midterm grade checks, end-of-semester surveys, or waiting for students to raise their hands. AI enables something better: early, proactive support driven by data.

    By analyzing behaviors like LMS logins, assignment submissions, attendance, and GPA fluctuations, AI can help surface subtle signals that a student might be struggling, before they’re at risk of dropping out. These models aren’t about replacing advisors with dashboards. They’re about giving staff more insight and more time to act. Even simple nudges—a reminder to complete a form, encouragement to meet with a tutor, a check-in from an advisor—can have a big impact. When timed well, these messages show students that someone is paying attention. That sense of being seen and supported helps students stay engaged and on track.

    And these moments matter. In an era where more students are questioning the value of higher education, institutions have to earn student trust and demonstrate tangible value at every turn. AI helps colleges shift from triaging problems to anticipating and solving them—one student, one moment at a time.

    Perhaps the most exciting promise of AI is that it enables colleges to support students not just during enrollment or in the classroom, but throughout their entire journey. With AI, we can become proactive instead of reactive. The tools coming to market today will transform the student lifecycle experience—from the first moment a prospect starts researching schools, to the day they graduate, and well beyond. This is about more than retention. It’s about long-term engagement, continuous improvement, and mission alignment.

    Imagine being able to understand how your alumni are doing years after graduation—not just through an annual survey, but through real-time feedback loops. Or being able to track which outreach messages drove the most enrollment conversions and act in real time. These aren’t one-time wins. They’re ongoing feedback mechanisms that help institutions deliver more value and stay aligned with student needs.

    These tools don’t just benefit institutions—they benefit students. When things work more smoothly, when support is easier to access, when guidance feels personal and relevant, students are more likely to succeed. They’re more likely to feel like they belong.

    Too often, AI is still treated as an add-on—a flashy tool reserved for innovation teams or short-term pilots. But to unlock real value, institutions need to treat AI the way they treat their learning management system or financial aid platform: as foundational infrastructure.

    AI isn’t just a tool for chatbots or analytics. It’s a layer that can enhance nearly every touchpoint in the student lifecycle, from marketing and enrollment to advising and alumni engagement. Think about the full journey: A prospective student lands on a university website and gets dynamic, personalized content based on their interests. They’re guided through the application process with tailored messages. Once enrolled, they get just-in-time nudges to register for classes or apply for internships. Years later, they’re prompted to complete a graduate survey or participate in alumni mentoring.

    That’s not a future scenario—it’s what’s possible today, when institutions treat AI as a strategic enabler rather than a side project. Of course, with that power comes responsibility. Institutions must be clear with students about how AI is used, where automation begins and ends, and how data is collected and safeguarded. AI systems should be trained on diverse data to avoid reinforcing existing biases. And students should always have a way to escalate to a human when they need one. Equity, transparency, and human oversight aren’t nice-to-haves—they’re non-negotiables. These principles must be embedded from the start, not bolted on later.

    At its core, higher education is about helping people reach their potential. It’s about creating opportunity, fostering growth, and unlocking talent. Those goals haven’t changed—but the tools to achieve them have. AI, done right, doesn’t replace the human experience of learning. It enhances it. It removes barriers, extends capacity, and gives every student a better shot at success. The most meaningful impact of AI won’t come from major product launches or shiny demos. It will come from the small ways it makes life better—for staff, for faculty, and most of all, for students.

    For institutions navigating change, facing pressure, and looking to do more with less, AI offers a way forward. A way to stay true to their mission while building for the future. Now is the time to stop asking whether AI belongs in higher ed—and start asking how we can use it to serve students better at every step of the journey.