Ingo Marquart

I work on frontier methods within the strategic AI team at Stifel. My focus is on scaling agentic AI that operates on structured financial data.

Previously I was NLP Lead at statworx, where I ensured technical excellence throughout marketing, acquisition, and project delivery while serving as technical lead on complex AI implementations involving LLMs and agents.

I have a decade of cross-sector experience spanning research and industry, I've delivered successful solutions in automotive, manufacturing, pharmaceutical, retail, and finance.

I am interested in GenAI & LLMs, Graph Neural Networks, Agents, Network Science and Game Theory.

E-Mail

Substack

GitHub

Newest Content

AgentECS: A new way to orchestrate agents (OS framework)

Games on Networks: A chronological guide (Blog)

Research

Bonds without Bondage: Escaping Entrapment in Managerial Networks
2025, with Matthew Bothner, Richard Haynes, Nghi Truong, and Hai Anh Vu

Published in Sociologica (19, 2025) Download here.

Abstract:

This paper explores the emergence of constraints in managerial networks and the strategies by which individuals regain autonomy. Drawing on Harrison C. White’s theories, we construct and analyze a series of examples that are composite narratives informed by the second author’s work at a global investment bank. Our examples show how professional relationships, initially pursued for career advantage, can crystallize into rigid, constraining roles. We also illustrate three strategies that restore autonomy: annealing, a strategy of controlled disruption; network reaching, which establishes counter-normative ties across social boundaries; and prolepsis, a form of anticipatory rhetoric that affects action through vivid, seemingly inevitable pictures of the future. We thus portray autonomy as recoverable through strategies that reshape network ties and conversational frames. We also explore how status shapes the feasibility of these strategies, with low status requiring network reaching and trust-building dialogue, and high status supporting prolepsis. Our discussion adds to the literature on networks and leadership, emphasizing how roles, strategy, and status interact to constrain and enable managerial agency.

Annealing as an Alternative Mechanism for Management
2025, with Matthew Bothner, Richard Haynes, and Hai Anh Vu

Published in Connections (45, 2025) Download here.

Abstract:

This paper examines annealing as a mechanism for inducing organizational change. Similar to a sword maker or glassworker transforming physical objects, a manager who anneals strategically shakes up a team with a sudden disruption and, after seeing favorable change, stabilizes the team in a realigned and improved structure. Annealing thus involves “lighting a fire” under colleagues, observing their adaptations, and eventually locking in the gains. Using the work of Harrison C. White as our foundation, we clarify the core features of annealing in contrast to routine management, discussing annealing as a strategic response to uncertainty that temporarily sacrifices equilibrium in search of a better state. Given our interest in when annealing is likely to damage, rather than benefit, those subjected to it, we also identify three conditions under which it fails or is harmful: the annealer lacks robust status, the annealed lacks emotional energy, and the wider environment presents an imbalanced mix of resources and uncertainty. Our discussion offers a window into when and how annealing can revitalize stagnant organizations or cause unintended harm. We conclude with questions for future research.

Text analysis and deep learning: A network approach
2021

Download Preprint here

Abstract:

Much information available to applied researchers is contained within written language or spoken text. Deep language models such as BERT have achieved unprecedented success in many applications of computational linguistics. However, much less is known about how these models can be used to analyze existing text. We propose a novel method that combines transformer models with network analysis to form a self-referential representation of language use within a corpus of interest. Our approach produces linguistic relations strongly consistent with the underlying model as well as mathematically well-defined operations on them, while reducing the amount of discretionary choices of representation and distance measures. It represents, to the best of our knowledge, the first unsupervised method to extract semantic networks directly from deep language models. We illustrate our approach in a semantic analysis of the term "founder". Using the entire corpus of Harvard Business Review from 1980 to 2020, we find that ties in our network track the semantics of discourse over time, and across contexts, identifying and relating clusters of semantic and syntactic relations. Finally, we discuss how this method can also complement and inform analyses of the behavior of deep learning models.

Using Semantic Networks to Identify the Meanings of Leadership
2021, with Nghi Truong and Matthew Bothner

Download working paper

Youtube Presentation: Using Semantic Networks to Identify the Meanings of Leadership

Abstract:

We develop a novel method that integrates techniques from machine learning with canonical concepts from network analysis in order to examine how the meaning of leadership has evolved over time. Using articles in Harvard Business Review from 1990 through 2019, we induce yearly semantic networks comprised of roles structurally equivalent to the role of leader. Such roles, from which leader derives meaning, vary in content from coach and colleague to commander and dictator. Yearly shifts in the structural equivalence of leader to clusters of thematically-linked roles reveal a decline in the degree to which leadership is associated with consultative activities and a corresponding rise in the extent to which a leader is understood to occupy a hierarchical position. Our analyses further reveal that the role of leader comes to eclipse the role of manager, measured through changes in PageRank centrality as well as Betweenness centrality over the course of our panel. Implications for new research on leadership, culture, and networks are discussed.

Random Forest Consensus Clustering for Regression and Classification
2021, with Ebru Koca Marquart

Download preprint here

Download the python package here

Abstract:

Random forests are invariant and robust estimators that can fit complex interactions between input data of different types and binary, categorical, or continuous outcome variables, including those with multiple dimensions. In addition to these desirable properties, random forests impose a structure on the observations from which researchers and data analysts can infer clusters or groups of interest. These clusters not only provide a structure to the data at hand, they also can be used to elucidate new patterns, define subgroups for further analysis, derive prototypical observations, identify outlier observations, catch mislabeled data, and evaluate the performance of the estimation model in more detail.

We present a novel clustering algorithm called Random Forest Consensus Clustering and implement it in the Scikit-Learn / SciPy data science ecosystem. This algorithm differs from prior approaches by making use of the entire tree structure. Observations become proximate if they follow similar decision paths across trees of a random forest. We illustrate why this approach improves the resolution and robustness of clustering and that is especially suited to hierarchical approaches.

When does catalyzing social comparisons cause growth?
2021, with Nghi Truong, Richard Haynes and Matthew Bothner

Download working paper here

Abstract:

When does a manager’s choice to activate social comparisons among employees prompt organizational growth? When should a manager instead allow employees to form aspirations and exert effort in relative autonomy, based on their own past performance? To address these questions, we develop an agent-based model that examines the growth-related effects of these two contrasting approaches. Our analyses reveal that activating social comparisons can be either beneficial or corrupting depending on three features of organizational context drawn from performance feedback theory: (i) employees’ goal adaptation rates, (ii) employees’ tendencies to engage in self-improvement, self-assessment, or self-enhancement, and (iii) the skewness of the distribution of their initial goals. We find that whether this distribution is right-skewed (the highly ambitious constitute the right tail) or left-skewed (the un-ambitious comprise the left tail) acts as the governing contextual moderator. Under right skew, social comparisons promote growth. Under left-skew, this effect reverses, but not if employees self-improve or adapt slowly: Slow adaptation “purifies” the intrafirm monitoring network of otherwise corrupting stimuli and thus restores the link between social comparisons and growth. Implications for research in performance feedback theory and organizational design are discussed.

Semantic Decision Networks
2021, with Matthew Bothner

Abstract:

When would members of an organization interpret a choice made by its main decisionmaker as ambiguous, important, irrelevant, surprising, or symbolic? To address this question, we develop a formal model of networks of choices. Extending research on natural language processing, these networks mirror networks of words and enable us to identify the meaning of choices, as well as the level of ambiguity surrounding these meanings. Using our model, we uncover latent relationships between choices and contexts in a focal decision-maker makes these choices. Our contributions our methodological and theoretical. Our method involves a mixture of state-of-the-art deep learning model with classical network analysis, which enables us to present a series of network-based measures characterizing choices. Our primary theoretical contribution is to cast new light on how audiences interpret choices as a function of their organizational context.

Essays on Networks, Deep Learning, and Leadership (PhD thesis)
2022

Download here.

Graph Embedding on Hierarchical Manifolds (WIP)

Work in Progress. More Information coming soon!

Social Norms in Attention Networks (WIP)
with Nghi Truong, Richard Haynes and Matthew Bothner

Work in Progress. More Information coming soon!

Applications

How to Manage ‘Invisible Transitions’ in Leadership (MIT Sloan Management Review)
2021, with Nora Grasselli and Gianluca Carnabuci

Taking on a substantial new role without a change in title or authority is hard, but there are ways to manage this transition.

Read here!

Threshold Spectral Community Detection for NetworkX
A Python Package for Community Detection with NetworkX

NetworkX Community detection based on the algorithm proposed in Guzzi et. al. 2013 (*).

Developed for semantic similarity networks, this algorithm specifically targets weighted and directed graphs. This implementation adds a couple of options to the algorithm proposed in the paper, such as passing an arbitrary community detection function (e.g. python-louvain). Similarity networks are typically dense, weighted and difficult to cluster. Experience shows that algorithms such as python-louvain have difficulty finding outliers and smaller partitions.

Given a networkX.DiGraph object, threshold-clustering will try to remove insignificant ties according to a local threshold. This threshold is refined until the network breaks into distinct components in a sparse, undirected network.

More information: on GitHub

Python RFCC - Data understanding, clustering and outlier detection for regression and classification tasks
Python Package, joint with Ebru Marquart

Companion package to "Random Forest Consensus Clustering for Regression and Classification (2021)"

More information: on GitHub

ESMT Leadership Transition Assistant
Cloud-based app to help define the most important challenges for your upcoming leadership transition

Creates an individual profile of 7 challenges that leaders typically face during transitions based on user input.

https://transitions.esmt.berlin/

text2network
A Python Package for extracting (contextual) semantic similarity network from Transformer models

Companion package to "Text analysis and deep learning: A network approach"

More information: on GitHub

Get in touch at digital@ingomarquart.de

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