The survey told you what the field asks. A supervised query tells you which parts of the field have asked your question, which have asked something next to it, and — just as useful — what none of them has measured.
Section 1From a field to a question
A literature review is organized around a question, not a topic. Two researchers with the same corpus and different questions should write different reviews, citing different works at the centre.
The query sorts the corpus into three groups:
- Core works ask a question like yours. These are the arguments your review must engage one by one.
- Periphery works address your question only in part or indirectly: they supply a mechanism, a context, a method, or a case. They are cited in support but not argued with.
- Everything else. Most of the corpus. For this question, it is background.
The line between core and periphery is a judgment, and the AI must be made to show where it drew it. The point of drawing it is the analysis that follows: once the two groups exist, you can compare how each asks the question, what each argues, and what each stands on.
Section 2The research question
The worked example uses one question from the lab's research on the organization of power:
How do socialist and post-socialist centres in China, Vietnam, Eastern Europe and the USSR, and North Korea direct attention and resources to particular enterprises and localities — through the level of ownership, credit and budget support, campaigns, and leaders' on-site visits? And why do some enterprises and localities receive more of this attention than others?
The question is chosen to meet a dataset. The lab's companion tutorial, Generating Data I: Extracting Datasets from a Large Media Corpus, builds a dataset from 946 KCNA and Rodong Sinmun reports on North Korean enterprises (기업소), 2012–2025. Each report is coded for sector, event type, province, and leader_visit: whether the leader visited. In that dataset a visit (현지지도, on-the-spot guidance) is the observable measure of central attention.
A literature review for that dataset has two jobs. It must say what the literature already argues about why the centre attends to some places and not others, and it must say what a dataset of visits could add. This chapter does the first; Chapter 4 does the second.
A question about visits alone would find almost nothing: fifteen works in 434 discuss leaders' visits substantively, and only one counts them. Asking about attention, with visits as one channel, brings in the comparative literature on ownership, credit, and bargaining that explains why some units are favoured — the arguments a visits dataset would test.
Section 3The prompt
You are running a literature analysis for one research question. Accuracy matters more than polish: every article you name and every quote must come from the files. Never invent works or quotes.
Files (read-only): 3 PDFs/citation_index.csv (434 works) and 3 PDFs/text/<item_key>.txt (full text for 309). Use Python to search the texts.
Research question: [your question here]
Identify CORE articles (primary research question similar to this one) and PERIPHERY articles (address it only in part or indirectly). Screen all 434 by title and abstract, with keyword search over the texts for each channel the question names, then read the candidates' full text (introduction, conclusion, key sections). Aim for roughly 10–20 core and 15–30 periphery.
Summarise each in 2–4 sentences. Then, for CORE and PERIPHERY separately, analyse: (1) variations of the research question; (2) main arguments; (3) data; (4) methods.
[Optional] List every work that discusses [your observable measure] substantively, separately from works that only mention it.
Quote one short passage (40 words or fewer) for each CORE article, with the text file as the source. Mark abstract-only summaries.
Write rq_analysis.md, and process_notes.md: your steps, how screening narrowed 434 to core and periphery (counts at each step), borderline core/periphery calls with keys, errors you caught yourself, and what a human must verify.
The prompt asks for counts at each screening step because the funnel is where errors hide. A work that never reached the reading stage cannot be core, however relevant it is, and the only way to see what was dropped is to see where.
In a web chat, run the screening on the citation index alone, then upload the full texts of the 30–50 best candidates in a second step. Expect the chat to read fewer of them closely, and require the abstract-only flag.
Section 4Screening: 434 to 47
| Step | Works |
|---|---|
| Works in the citation index | 434 |
| Text files that are not empty | 300 |
| Title or abstract hits, by channel: ownership · credit · campaigns · visits and monitoring | 107 · 114 · 6 · 45 |
| Full text above a threshold for at least one channel | 117 |
| Union of all hits, ranked by density and channel coverage | 187 |
| Full text contains a narrow visit term (on-the-spot guidance, inspection tour, 현지지도…) | 27 |
| Read in targeted full text | about 60 |
| Core / periphery | 17 / 30 |
The first finding came before any summary was written. The question has four channels, and the corpus is very uneven across them: more than a hundred works on ownership and credit, six on campaigns. A question that leans on its thinnest channel will have a thin core.
Section 5The core and the periphery
| Work | Key | Case | In one line |
|---|---|---|---|
| B.-Y. Kim 2017 | 8ZMIZQX5 | N. Korea | The leader's discretionary fund and on-site visits move inputs to favoured sites but do not raise performance. |
| S.C. Kim 2003 | 2F5XEVET | N. Korea | County-run local industry was left to self-reliance while central industry kept priority. |
| Park Jeong-jin 2024 | NA9GVKDJ | N. Korea | The 20×10 policy is a party-led campaign that concentrates labour and materials on selected counties. |
| Y. Park 2025 | EVWW4VZE | N. Korea | Under sanctions, nighttime lights rise in elite areas: the regime protects its coalition. |
| Walder 1995 | 58DQPRJD | China | Lower-level owners monitor more closely and impose harder budgets. |
| Oi 1999 | F6BEJZK4 | China | Local governments favour revenue-generating firms; model status brings higher-level favours. |
| Shirk 1993 | 99TJ9RQZ | China | Enterprises and provinces bargain for particularistic deals; projects move when a leader visits. |
| Heilmann 2008 | KVDEVJXM | China | Local experimenters find patrons on inspection tours; the centre scales up the winners. |
| Naughton 2007 | 7GWNNIN3 | China | “Grasp the large, let the small go”: attention and finance concentrated on the largest firms. |
| Brandt & Li 2003 | CFYVNK5D | China | Banks favour township firms over private ones, mediated by bank managers' incentives. |
| Edin 2003 | 5GZSK8W2 | China | Higher levels control strategically important townships more closely. |
| Solinger 1986 | 4UKLFG4H | China | In early reform Wuhan, lobbying up the hierarchy for investment was “the only game in town”. |
| Painter 2003 | XFQ7MA6D | Vietnam | General corporations were protected; closures and mergers fell on local SOEs. |
| Malesky 2009 | 6Q64VQIN | Vietnam | New provinces were created to win a Central Committee majority, and transfers followed them. |
| Kornai, Maskin & Roland 2003 | KG6HZIZ2 | General | Funders rescue firms and regions they cannot commit to abandon. |
| Ericson 1991 | 8KP4EK5M | USSR | Overlapping hierarchies and party bodies carry central priorities down to enterprises. |
| Kornai 1986 | 8CW8B79U | Hungary | A polycentric bureaucracy grants favours to some firms and burdens to others. |
Each core summary came with a quote. Two show how a quote anchors a summary — and how two works from different countries can describe the same moment:
The 30 periphery works fall into a few groups:
- North Korean visits and sanctions (13). Works that report visit counts or use visits in passing — Kong 2014 on visits to military camps [7ZMILDVP], Noland 2019 on the 2018 shift to economic sites [QSL3BVBS], Kim, Kim, Park & Sun 2023 on the costs of sanctions [MIS3S8V6] — and works on reform politics and rents.
- Chinese fiscal and administrative relations (13). Revenue sharing and fiscal dependence (Wong 1991, Oi 1992, Wedeman 1999), federalism (Montinola, Qian & Weingast 1995), collusion against inspection teams (Zhou 2010), and the promotion of officials (Chen, Li & Zhou 2005; Shih et al. 2012).
- Other cases and theory (4). Russian governors (Reuter 2012), the breakdown of Soviet and Chinese hierarchies (Solnick 1996), Vietnamese state enterprises (Beresford 2008), and soft budgets in banking (Berglof & Roland 1998).
Two periphery works were summarized from the abstract alone, because the corpus has no usable text for them: Qian & Xu 1993 on China's M-form hierarchy [DMF9WT23] and Yang Moon-soo 2006 on North Korean enterprise governance [6MGMDZMF]. Neither can be core until someone reads it.
The hardest call was Kim, Kim, Park & Sun 2023 [MIS3S8V6]. It uses Kim Jong-un's county visits, 2017–2019, but only as a check on its main estimates of the cost of sanctions. For this question it is periphery; for a question about sanctions it would be core. The agent listed every borderline call like this one, with its reasons, in its notes.
Sections 6 to 9 are the analysis. Each takes one of the prompt's four comparisons and sets the core beside the periphery.
Section 6Analysis 1: variations of the question
The core does not ask one question. It asks six, and they differ in where they look for the answer:
Core (17)
Asks why particular units are favoured: which firm, which locality, which province. The unit of analysis is the enterprise or the place.
Periphery (30)
Asks about the relationship between levels — fiscal flows, promotion of officials, sanctions exposure — or reports where visits went without asking why. The unit is the official, the budget, or the year.
Only two core works ask about the leader's own instruments, and both are on North Korea. The comparative core asks the question through ownership, credit, and bargaining; the North Korean core asks it through the leader. That split shapes the rest of the analysis.
Section 7Analysis 2: main arguments
Grouped by what they say decides who gets attention, the core arguments fall into four clusters. Chapter 3 turns them into a typology; here they are in brief.
- 1The level of ownership structures attention.Lower-level owners monitor more closely (Walder). The centre grasps the large and lets the small go (Naughton). Restructuring falls on local SOEs (Painter). North Korea's county industry is left to fend for itself (S.C. Kim).
- 2Particularism from below.Enterprises and provinces bargain for deals (Shirk, Solinger, Kornai 1986). Rescue motives keep budgets soft (Kornai, Maskin & Roland). Model status brings favours, and experimenters seek patrons (Oi, Heilmann).
- 3The regime targets its coalition.Resources shift to elite areas when sanctions bite (Y. Park). Provinces are created to win votes (Malesky). Strategic townships are watched more closely (Edin).
- 4The leader chooses.Visits and the discretionary fund move inputs to favoured sites without improving performance (B.-Y. Kim). A party-led campaign mobilises labour for selected counties (Park Jeong-jin).
Core (17)
Four rival accounts of who decides: the structure of the state, the units themselves, the regime's coalition, or the leader. No core work argues directly against a core work in another cluster.
Periphery (30)
Arguments about context: sanctions reduced output; decentralization left localities dependent on central subsidies; promotion rewards growth, or connections. On North Korea, visit patterns are read as signals of priorities — military first, then the economy after 2018.
The periphery holds the corpus's only direct argument about what officials are rewarded for: Chen, Li & Zhou 2005 find that provincial leaders' turnover depends on relative growth, and Shih et al. 2012 find no evidence that growth was rewarded. Chapter 3 lists it among the disagreements.
Section 8Analysis 3: data
| Kind of data | Core works |
|---|---|
| Official statistics and documents | Walder; Naughton; Painter; Kornai 1986; S.C. Kim |
| Fieldwork and interviews (China) | Oi; Shirk; Heilmann; Edin (12 counties, 1996–99); Solinger |
| Surveys | Brandt & Li (matched bank-firm survey; 118 bank managers) |
| Province-level panel | Malesky |
| Satellite: nighttime lights | Y. Park |
| North Korean state media | B.-Y. Kim (visit counts compiled by KINU); Park Jeong-jin (Rodong Sinmun, Dec 2023–Jul 2024) |
| Theory and literature surveys | Kornai, Maskin & Roland; Ericson |
Core (17)
Rich on China, from fieldwork. Thin on North Korea, where the data are official texts, satellite images, and visit counts taken from secondary sources.
Periphery (30)
More systematic: provincial panels, budget data, Russian appointment data, refugee surveys, archives, firm-level sanctions exposure. Its North Korean visit counts are reported in passing, mostly from secondary sources, and cover short periods.
Section 9Analysis 4: methods
Core (17)
Qualitative, mostly. Institutional and organizational analysis (6); field-based comparison (4); one single-city case study.
Quantitative, rarely. Regression in three works (Brandt & Li, Malesky, Y. Park); descriptive counts of visits in one (B.-Y. Kim).
Other. Content analysis of party media (Park Jeong-jin); formal review (Kornai, Maskin & Roland).
Periphery (30)
Panel and Bayesian regression on promotion and appointments (four works); spatial and structural models (two).
Qualitative political economy for most of the rest, and one methodological review of how to study data-poor economies (Haggard, Kim & Lee 2026).
Put Sections 8 and 9 together and the pattern is clear. The core makes arguments about why particular units are favoured, and tests them with fieldwork in China; the periphery has more systematic data but asks other questions. For North Korea, no work in either group has data at the level of the enterprise or the province. That is the opening a visits dataset could fill, and Chapter 4 tests it.
Section 10What the corpus says about on-site visits
Because the question names one observable channel, the prompt asked for every work that discusses it, separately from the core/periphery split.
| Case | Works | What they do with visits |
|---|---|---|
| North Korea | 10 | Count visits by sector, 1994–2009 (B.-Y. Kim); use county visits as a check (Kim et al. 2023); report counts for short periods (Kong; Sauk-Hee Park; Noland); describe visits as staged signals (Smith); trace work methods and movements to a particular visit (Frank; Yang); note visits as a way to keep managers in line (Haggard & Noland 2011); code inspection visits by officials other than the leader (Park Jeong-jin). |
| China | 5 | Leaders' visits confer model status (Oi); move stalled projects (Shirk); connect experimenters with patrons (Heilmann); search for experiments (Brandt & Rawski); and inspection teams provoke local collusion (Zhou). |
Only one work in the corpus counts visits systematically and relates them to an outcome. B.-Y. Kim 2017 tabulates 1,447 Kim Jong-il visits by sector, 1994–2009, and finds no correlation between the share of visits to the economy and economic performance. Its series ends in 2009.
The visit counts in B.-Y. Kim 2017 (1,447 in total; economy 544, military 448, education and culture 272) were read from a table that was garbled in the extracted text. Check them against the book before citing them. The book itself warns that a visit to several sites may be counted more than once.
For the dataset this is the most useful finding in the chapter. No work codes the province or the enterprise visited. None codes what follows a visit. None covers 2012–2025. The variable leader_visit in Generating Data I: Extracting Datasets from a Large Media Corpus is not a replication of anything in this corpus; it measures something the literature discusses and has not measured.
Section 11Checking the analysis
The process notes for this run are as useful as the analysis. Three parts of them should be read before anything else.
Errors the agent caught
- Vocabulary. The first visit search missed “Spot Guidance” (B.-Y. Kim's term) and “onsite” (Noland's). A second pass with spelling variants fixed it. Every field has its own words for the same thing.
- A second language. The English searches missed the one Korean-language core work. A separate pass on Korean terms — 현지지도, 현지료해, 기업소, 지방공업, 속도전 — found it.
- False positives. “Inspection” matched nuclear inspections; “visit” matched diplomatic visits to Beijing. Reading the passages around each match separated them.
- Invented detail. Four small details in draft summaries — a citation, a phrase, an appendix label, a source attribution — were not in the texts. They were removed because every claim was checked.
The first two are why a human who knows the field must supply the vocabulary. The last is the error to watch for in any AI analysis of literature: a model knows a great deal about famous works and will write what it knows rather than what the text says, unless the prompt forces it back to the text.
What a human must verify
- The visit counts in B.-Y. Kim 2017, against the book.
- A robustness table in Y. Park 2025 that was jumbled in extraction, before relying on its result.
- The translation of the Park Jeong-jin 2024 quote, by a Korean reader.
- Periphery summaries that rest on the opening and closing pages only.
- The 125 works with no text and 17 with empty or near-empty text: a visit study among them would have been missed.
Your spot-check
Pick five core works. For each, open the PDF, find the quote, and read a page either side. Then ask: is the one-line summary what the work argues, or what it is known for? Start with the works whose summaries rest on numbers read from tables.
Section 12AI: opportunities and challenges
Opportunities
Full-corpus screening. All 434 records and 300 texts were searched on four channels in seconds. Nothing was excluded because no one had time to look.
A second language. Once the Korean terms were supplied, the Korean works were screened as thoroughly as the English ones.
Mechanical verification. Every quote was checked against its source by a script.
Comparison across the set. The finding that no work has enterprise- or province-level data on visits came from comparing 47 works at once.
Challenges
The boundary is a judgment. Core versus periphery is the decision that shapes the review, and it is the one the AI is least able to make for you.
Recall depends on vocabulary. The search finds the words you give it. A field's own terms — and its other languages — come from you.
Garbled tables. Numbers read from extracted tables are unreliable, and the most important number in this chapter came from one.
Memory over text. Models know famous works and drift toward what they know. Quotes are the defence.
Chapter 3 takes the seventeen core works and turns their arguments into a ledger and a typology.
Terminology introduced in this chapter
- supervised query
- Running one research question against the corpus to sort it into core, periphery, and background.
- core
- Works whose primary research question resembles yours. Engaged one by one in the review.
- periphery
- Works that address the question in part or indirectly, by supplying a mechanism, context, case, or method.
- screening funnel
- The sequence of steps, with counts, by which the corpus is narrowed to candidates and then to core and periphery.
- observable measure
- Something a researcher can record that stands for a concept the literature discusses — here, a reported on-site visit for central attention.
- abstract-only
- A summary produced without the full text. Always flagged; never the basis for a core placement.