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<article xmlns:xlink="http://www.w3.org/1999/xlink">
  <front>
    <journal-meta />
    <article-meta>
      <title-group>
        <article-title>Government Texts for Public Institutions with GPT-4o, AI-Driven Zero-Shot Learning, and Transformer Models</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <string-name>Jenny Ortiz-Zambrano</string-name>
          <email>jenny.ortizz@ug.edu.ec</email>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>César Espin-Riofrio</string-name>
          <xref ref-type="aff" rid="aff0">0</xref>
        </contrib>
        <contrib contrib-type="author">
          <string-name>Arturo Montejo-Ráez</string-name>
          <xref ref-type="aff" rid="aff1">1</xref>
        </contrib>
        <contrib contrib-type="editor">
          <string-name>Complex Word Identification, Public Administration, Generative AI, Zero-Shot Learning</string-name>
        </contrib>
        <aff id="aff0">
          <label>0</label>
          <institution>Universidad de Guayaquil</institution>
          ,
          <addr-line>Cdla. Universitaria, Av. Delta s/n y Av. Kennedy, Guayaquil</addr-line>
          ,
          <country country="EC">Ecuador</country>
        </aff>
        <aff id="aff1">
          <label>1</label>
          <institution>Universidad de Jaén</institution>
          ,
          <addr-line>Las Lagunillas s/n, 23071 - Jaén</addr-line>
          ,
          <country country="ES">Spain</country>
        </aff>
      </contrib-group>
      <pub-date>
        <year>2025</year>
      </pub-date>
      <abstract>
        <p>The presence of unknown words in a text can have a significant impact on the reader's understanding, leading them to misinterpret the content. This challenge is magnified when dealing with complex words, whose meaning often depends on context and is not easy to infer. This problem extends to users who access texts issued by public institutions. In response to this need, we present GovAIEasy, a web application based on Artificial Intelligence, designed to simplify the understanding of institutional texts by applying GPT-4o and Zero-Shot learning. This application transforms complex texts into accessible and easy-to-understand versions for the user. In addition, the GPT-4o model is used to generate a definition, an example, and a use case of the detected complex word, facilitating understanding for users with a low literacy level, cognitive dificulties, or disabilities, helping them better understand the instructions and procedures required in public ofices.</p>
      </abstract>
    </article-meta>
  </front>
  <body>
    <sec id="sec-1">
      <title>1. Introduction</title>
      <sec id="sec-1-1">
        <title>The presence of infrequent words in a text significantly afects the reader’s comprehension, as it can</title>
        <p>
          lead to misinterpretations, disinterest, or even abandonment of reading [
          <xref ref-type="bibr" rid="ref1">1</xref>
          ]. Similarly, complex words
pose a considerable challenge, given that their meaning is closely tied to context and dificult to infer in
isolation [
          <xref ref-type="bibr" rid="ref2">2</xref>
          ]. In this regard, sentence simplification, which involves restructuring the content to make
it clearer and more accessible, emerges as a promising technique to support individuals with various
reading dificulties [
          <xref ref-type="bibr" rid="ref3">3</xref>
          ].
        </p>
        <p>
          Many people face significant reading comprehension barriers when dealing with public administration
text [
          <xref ref-type="bibr" rid="ref4">4</xref>
          ]. Often, the contents of texts addressed to citizens contain a dificult to understand vocabulary,
which complicates the interpretation and the initiation of activities and administrative procedures by
users [
          <xref ref-type="bibr" rid="ref5">5</xref>
          ]. These barriers may include dificulty interpreting long sentences, technical or specialized
words, unusual terms, or complex linguistic structures. These dificulties directly afect people with
intellectual disabilities or with a low level of literacy. Even those with a high level of education, such
as university students with specialized knowledge in various areas of study, can be found within the
groups afected by reading dificulties [
        </p>
      </sec>
      <sec id="sec-1-2">
        <title>6]. Predicting which words are dificult to understand for a</title>
        <p>
          given target population is commonly known as complex word identification (CWI) [
          <xref ref-type="bibr" rid="ref7">7</xref>
          ]. This task is a
vital step in many applications related to natural language, such as text simplification. Complex word
identification is the task of detecting words in the content of documents that are dificult or complex to
understand by people belonging to certain groups [
          <xref ref-type="bibr" rid="ref8">8</xref>
          ].
(A. Montejo-Ráez)
(A. Montejo-Ráez)
        </p>
        <p>CEUR
Workshop</p>
        <p>ISSN1613-0073</p>
      </sec>
      <sec id="sec-1-3">
        <title>Advances in artificial intelligence (AI) have attracted great attention from researchers and profes</title>
        <p>
          sionals and have opened a wide range of beneficial opportunities for its application in the public sector
[
          <xref ref-type="bibr" rid="ref9">9</xref>
          ]. Emerging technologies and in particular AI have a high potential for public administrations in the
digital era, improving process management through timely delivery of service responses to citizens and
the internal eficiency of processes [
          <xref ref-type="bibr" rid="ref10">10</xref>
          ].
        </p>
        <p>The relevance of GovAIEasy1 lies in its valuable contribution to the assessment of lexical complexity
in texts. Its main objective is to promote digital modernization, supporting the creation of more agile,
open, and innovative governments. This tool ofers various applications relevant to research in the field
of natural language processing and language simplification in government documents:
• Automatic Complex Word Identification . Automates the process of identifying complex words
in a text, facilitating the analysis and review of large volumes of content, which is especially
useful in government documents.
• Complexity Level Assignment. The system assigns a dificulty score to each complex word in
the range of 0 to 1, classifying them into three levels: moderately dificult, dificult, and very
dificult. This classification is essential to assess the impact of words on text comprehension.
• Summary Generation. In addition, the model generates simple summaries of the Spanish text,
facilitating a quick and accessible understanding of the content without having to read the full
text.
• Continuous improvement through data logging. Data on complex words and their
classiifcation are stored in a database, allowing continuous monitoring of model performance and
improving the accuracy of word identification and classification over time.</p>
      </sec>
    </sec>
    <sec id="sec-2">
      <title>2. Related work</title>
      <p>
        In recent times, the use of Artificial Intelligence (AI) has increased to address the governance challenges
facing cities. Due to its advanced capabilities, AI is expected to become a critical resource for local
governments in their pursuit of smart and sustainable development [
        <xref ref-type="bibr" rid="ref11">11</xref>
        ]. Although the potential of
Artificial Intelligence has been widely explored in the private sector, its usefulness in the public sphere
is increasingly recognized by governments themselves, which are adopting AI to strengthen their
performance in various areas [
        <xref ref-type="bibr" rid="ref12">12</xref>
        ].
      </p>
      <p>
        The application of chatbots in the public sector is not new [
        <xref ref-type="bibr" rid="ref13">13</xref>
        ]. This work proposed an innovative
approach by designing an advanced implementation of Artificial Intelligence technologies, such as
chatbots, in the public sector addressing a major challenge: improving communication between the
government and citizens, an aspect that has been problematic for a long time. A more recent work
proposed the implementation of an artificial intelligence chatbot to improve the help desk system in
the Loreto regional government through the WhatsApp instant messaging platform [14]. The main
objective of the project was to optimize the management of requests and events, which will result in
more eficient user service, process automation, and an overall increase in service efectiveness. After
this implementation, a significant improvement in user satisfaction was observed.
      </p>
    </sec>
    <sec id="sec-3">
      <title>3. GovAIEasy</title>
      <p>GovAIEasy (Artificial Intelligence Makes It Easy) is an innovative AI-powered lexical simplification
system employing the powerful GPT-4 human language generation model. Its main function is to
convert complex texts into more accessible and easy-to-understand versions for users. This system is
based on Lexical Simplification, with the aim of providing automatic summaries that improve users’
understanding of the text. Its approach aims to especially benefit people with low levels of literacy,
cognitive problems, or disabilities that make it dificult to understand procedures in public ofices. By
1The GovAIEasy application is available at https://www.govaieasy.com/
transforming the complexity of language into a more understandable format, GovAIEasy contributes
significantly to making state information more accessible and equitable for all. Figure 1 shows the
graphic symbol that represents the GovAIEasy platform.</p>
      <sec id="sec-3-1">
        <title>GovAIEasy automates the identification of complex words in the texts consulted by the user. To</title>
        <p>improve your understanding, the system automatically provides definitions, examples, and use cases
for complex words, allowing us to illustrate the inner chain of thought (CoT) strategy followed by the
model. This approach further facilitates the process of understanding the content for the user, providing
them with the necessary tools to address specific dificulties that may arise when interacting with state
documents, and providing a pedagogical way to improve reading abilities.</p>
        <sec id="sec-3-1-1">
          <title>3.1. Proposed system</title>
          <p>Our strategy focuses on applying zero-shot techniques to the GPT-4o model to generate accurate text
sequences. Using the OpenAI API, the model is optimized to efectively meet the needs of GovAIEasy
users, a solution that combines artificial intelligence to improve government documents and facilitate
access to information in government. GovAIEasy ofers tools to analyze, clean and simplify texts,
reducing complexity and improving comprehension (see Figure 2). It also uses GPT-4o for automated
content analysis and summarization. Details of the features of the model are provided in Table 1.
3.1.1. Process Flow Description
The stages considered in this study are fundamental to understanding the process of assessing lexical
complexity in texts. Through a systematic approach, various phases are addressed that allow not only
the identification of complex words but also their level of dificulty, generate accessible summaries, and
store the results for later analysis. This comprehensive approach allows for a more precise assessment
of the impact of complex words on text comprehension, which is essential for simplifying language in</p>
          <p>3 presents the main stages involved in this process, described
1. Input data: The user provides a text.
2. Generate prompts: Two prompts are generated to send to the language model:
• Prompt for complex words: The model identifies complex words and assigns a dificulty
value.</p>
          <p>• Prompt for summary: The model generates a concise summary of the text.
3. Processing by the model: The model processes both prompts and returns the results: identified
complex words and summary.</p>
        </sec>
      </sec>
      <sec id="sec-3-2">
        <title>4. Post-processing: Complex words are assigned a dificulty level.</title>
      </sec>
      <sec id="sec-3-3">
        <title>5. Storage and Response: The results (complex words, their dificulty, and summary) are stored in</title>
        <p>a database and returned as a response to assess and study their lexical complexity, which will be
used in future research. This storage enables not only to analyze the presence and distribution of
dificult terms in the processed texts, but also to monitor the model’s performance in identifying
and classifying these words.</p>
        <sec id="sec-3-3-1">
          <title>3.2. GPT-4 with Prompt Generation</title>
          <p>Prompt design optimizes the way the model interacts with. The main advantage of this technique is
that it does not require additional resources, as the performance of the existing model can be improved
simply by adjusting the input presented to it [15]. Furthermore, it has been shown that proper prompt
design in a general model, such as GPT-4, can outperform a model trained for a specific task [ 16] [17].
Since not all prompts generate the desired behavior in language models, it is essential to develop a
prompting strategy that fits the task at hand. Although prompts often need customization for specific
tasks, they can often be generalized within an appropriate prompt framework [ 18].</p>
          <p>We define two main prompts that are sent to the language model to process the text:
1. Prompt for complex words. The first prompt aims to identify the most complex words in the
text. The language model must extract a list of dificult words, assign them a dificulty value
within the range of 0 to 1, and mark whether these words are acronyms. This process is carried
out on the basis of instructions that establish diferent levels of dificulty (moderately dificult,
dificult, and very dificult) according to the calculated complexity value.</p>
        </sec>
      </sec>
      <sec id="sec-3-4">
        <title>2. Prompt for summary. The second prompt asks the model to generate a concise summary of</title>
        <p>the text in Spanish. This step allows obtaining a simplified version of the content that facilitates
comprehension.</p>
      </sec>
      <sec id="sec-3-5">
        <title>The prompt applied in the model is in Table 1.</title>
        <sec id="sec-3-5-1">
          <title>3.3. Exploring Process of GPT-4o</title>
          <p>Our methodology generates a simplified version of the original text, transforming complex content into
a more accessible version, as shown in Table 2. Our approach adapts to the most common vocabulary
of users of ecuadorian public institutions, ensuring that the simplification preserves the naturalness
of administrative language. From a linguistic perspective, the resulting text preserves the meaning of
the original, ensuring the retention of key terms, such as proper nouns, within the legal framework.
An example of this is the reference to “Impuesto a la renta” a specific tax with defined regulations,
whose name is retained. Furthermore, the model optimizes the writing by avoiding redundant and
irrelevant content, without requiring prior linguistic knowledge from the user. Table 3 presents a
comparison between the original text and the simplified version, highlighting the preservation of
key terms, linguistic clarity, and the elimination of irrelevant information, while Table 4 presents a
comparison between the original text and the simplified version, highlighting structural modifications
and readability improvements.
Source Text
¿Quién debe pagar? La declaración de Impuesto a la
Renta es obligatoria para todas las personas naturales,
las sucesiones indivisas y las sociedades, nacionales
o extranjeras, domiciliadas o no en el país, conforme
los resultados de su actividad económica; aún cuando
la totalidad de sus rentas estén constituidas por
ingresos exentos, a excepción de: Los contribuyentes
domiciliados en el exterior, que no tengan
representante en el país y que exclusivamente tengan ingresos
sujetos a retención en la fuente. Las personas
naturales cuyos ingresos brutos durante el ejercicio fiscal
no excedieren de la fracción básica no gravada. La
normativa tributaria define a estos contribuyentes
como “sujetos pasivos”.</p>
          <p>Simplified Text
La declaración de Impuesto a la Renta es obligatoria
para personas naturales, sucesiones indivisas y
sociedades, tanto nacionales como extranjeras, según
su actividad económica, excepto para contribuyentes
en el exterior sin representante y con ingresos sujetos
a retención, y personas naturales con ingresos brutos
que no superen la fracción básica no gravada.</p>
          <p>Although CoT is considered the primary tool for reasoning in large-scale language models (LLMs),
complex reasoning remains a major challenge for these models [19] [20]. Recent research has shown
that explanations generated using CoT can be influenced by content biases, negatively afecting both
their robustness and fidelity [ 21]. In Figure 4, our experiments demonstrated that the definitions,
Original Sentence</p>
          <p>Simplified Sentence</p>
          <p>Lexical Change
conforme los resultados de
su actividad económica
según
económica
su</p>
          <p>actividad
Los contribuyentes
domiciliados en el exterior, que no
tengan representante en el
país y que exclusivamente
tengan ingresos sujetos a
retención en la fuente.</p>
          <p>Las personas naturales
cuyos ingresos brutos
durante el ejercicio fiscal
no excedieren de la fracción
básica no gravada.</p>
          <p>contribuyentes en el exterior
sin representante y con
ingresos sujetos a retención
personas naturales con
ingresos brutos que no
superen la fracción básica no
gravada.</p>
          <p>“conforme los resultados de” → “según”
(more concise)
“domiciliados en el exterior” → “en el
exterior”,
“que no tengan representante en el país”
→ “sin representante”,
“exclusivamente tengan ingresos sujetos a
retención en la fuente” → “con ingresos
sujetos a retención”
“cuyos ingresos brutos durante el ejercicio
fiscal no excedieren de” → “con ingresos
brutos que no superen”
Original Sentence
¿Quién debe pagar?
(Interrogative sentence)
La declaración de Impuesto a la
Renta es obligatoria para todas
las personas na-turales, las
sucesiones indivisas y las sociedades,
nacionales o extranjeras, domiciliadas
o no en el país.
aún cuando la totalidad de sus
rentas estén constituidas por
ingresos exentos, a excepción de:
Los contribuyentes domiciliados en
el exterior... + Las personas
naturales cuyos ingresos brutos... (two
separate sentences).</p>
          <p>La normativa tributaria define a
estos contribuyentes como “sujetos
pasivos”</p>
          <p>Simplified Sentence</p>
          <p>(deleted)
La declaración de Impuesto a la
Renta es obligatoria para personas
naturales, sucesiones indivisas y
sociedades, tanto nacionales como
extranjeras.</p>
          <p>(deleted)
excepto para contribuyentes en el
exterior sin representante y con
ingresos sujetos a retención, y
personas naturales con ingresos brutos
que no superen la fracción básica
no gravada.</p>
          <p>(deleted)</p>
          <p>Structural Change
The initial question was
removed, as the
simplification begins directly with the
statement.
“todas” and “domiciliadas
o no en el país” were
removed to make the sentence
more concise.</p>
          <p>This section was removed
because it did not provide
essential information for
defining who is required to file a
tax return.</p>
          <p>Both exceptions were
merged into a single
sentence, making the structure
more fluid.</p>
          <p>The definition of “sujetos
pasivos” was removed, as
it is not essential to
understanding the tax obligation.
examples, use cases, and the complexity level of words identified as complex generated by GPT-4o
through its CoT approach, provide accurate and consistent reasoning in the context of state texts.
This CoT demonstrates the model’s relevance, as it processes and understands the input text through
multiple levels of abstraction to produce a coherent and contextually relevant output. We highlight its
efectiveness when evaluated on texts of varying complexity, achieving state-of-the-art performance
and demonstrating consistent improvements in robustness.</p>
        </sec>
        <sec id="sec-3-5-2">
          <title>3.4. Scalability and Maintenance</title>
          <p>The GovAIEasy application is designed to expand its application in the future to various types of text
beyond public administration content. The system has a modular architecture that makes it easy to
add or update features as needed. Periodic maintenance tasks are carried out on the collected data, as
well as version updates to improve both the interface and the inclusion of new processes that enrich
the analysis of the data in addition to performing regular error analysis to ensure performance and
reliability precision of the automated system.</p>
        </sec>
      </sec>
    </sec>
    <sec id="sec-4">
      <title>4. Conclusions and Recommendations</title>
      <sec id="sec-4-1">
        <title>AI represents a field of research and technological application demonstrating a significant impact on</title>
        <p>the improvement of public services specifically about attention and assistance to users. Governments
can also use AI to improve communication with citizens, as well as to increase the eficiency and quality
of public services [22]. This article relies on state-of-the-art systems, based on the premise that recent
advances in artificial intelligence, particularly through the application of the Generative Pre-trained
Transformer (GPT-4o) model, ofer a promising opportunity to transform government administration
and enhance public services for the direct benefit of citizens.</p>
        <p>It is important to highlight that storing complex words and their dificulty levels in a database not only
allows for a detailed analysis of lexical complexity in texts, but also provides a key tool for evaluating
model performance and improving its accuracy in future implementations. This information is essential
for developing strategies that promote language accessibility and comprehension, especially in oficial
and public interest documents. Thus, research in this field contributes to the creation of more efective
strategies for text simplification, facilitating communication and ensuring that information is more
understandable to a wider audience.</p>
      </sec>
    </sec>
    <sec id="sec-5">
      <title>Acknowledgements</title>
      <p>This work is funded by the Ministerio para la Transformación Digital y de la Función Pública and
Plan de Recuperación, Transformación y Resiliencia - Funded by EU – NextGenerationEU within
the framework of the project Desarrollo Modelos ALIA. This work has also been partially supported
by Project CONSENSO (PID2021-122263OB-C21), Project MODERATES (TED2021-130145B-I00) and
Project SocialTox (PDC2022-133146-C21) funded by MCIN/AEI/10.13039/501100011033 and by the
European Union NextGenerationEU/PRTR and Project ROMANET (CERV-2024-CHAR-LITI-101215052),
funded by the European Union NextGenerationEU/PRTR.</p>
    </sec>
    <sec id="sec-6">
      <title>Declaration on Generative AI</title>
      <p>During the preparation of this work, the authors used ChatGPT (OpenAI) to improve the writing in
terms of clarity, coherence, and comprehensibility, and the free version of Grammarly—integrated with
the online LaTeX editor Overleaf—for grammar and spelling correction. After using these tools, the
authors manually reviewed and refined the content as needed and take full responsibility for the final
version of the manuscript.
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