Thread: Systems, Information, Knowledge

(Links at bottom)

(Links at bottom)

Separation of Concerns

From a knowledge perspective, systems usually distinguish between business concerns (what it’s about), software engineering (what is required), and operations (how to use it).

Knowledge: business, functionality, engineering.

Old-fashioned knowledge taxonomy: Business (what it’s about), Operations (how to use it), Engineering (what is required).

That functional view of information can be further detailed along enterprise architecture layers:

  • Enterprise: information pertaining to the business value of resources, processes, projects, and operations.
  • Systems: information pertaining to organization, systems functionalities, and services operations.
  • Platforms: information pertaining to technical resources, quality of service, applications maintenance, and processes deployment and operations.
Enterprise concerns and architecture layers.

Enterprise concerns and architecture layers.

Yet,  that taxonomy may fall through when enterprise systems are entwined in physical and social environments wholly digitized. Beyond marketing pitches, the reality of what Stanford University has labelled “Symbolic Systems” may be unfolding at the nexus between information systems and knowledge management.

Knowledge Architecture

In  their pivotal article Davis, Shrobe, and Szolovits have firmly planted the five pillars of the bridge between knowledge representation and information systems:

  1. Surrogate: KR provides a symbolic counterpart of actual objects, events and relationships.
  2. Ontological commitments: a KR is a set of statements about the categories of things that may exist in the domain under consideration.
  3. Fragmentary theory of intelligent reasoning: a KR is a model of what the things can do or can be done with.
  4. Medium for efficient computation: making knowledge understandable by computers is a necessary step for any learning curve.
  5. Medium for human expression: one the KR prerequisite is to improve the communication between specific domain experts on one hand, generic knowledge managers on the other hand.
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Information Systems Prehistory: Surrogates without Ontological Commitment

That puts information systems as a special case of knowledge ones as they fulfill the same principles:

Yet, two functional qualifications are to be considered:

  • The first is about the role of data processing: contrary to KM systems, information systems are not meant to process data into information.
  • The second is about role of events processing: contrary to KM systems, information systems have to manage the actual coupling between context and symbolic surrogates.

The rapid melting of both distinctions points to the convergence of information and knowledge systems.

Data, Information, Knowledge

Facts are not given but have to be be captured as data before being processed into useful information. Depending of systems purpose, that can be achieved with one of two basic schemes:

  • With data mining the aim is to improve decisions by making business sense of actual observations. Information is meant to be predictive, concrete and directly derived from data; it is a resource whose value and shelf-life are set by transient business circumstances.
  • With systems analysis the aim is to build software applications supporting business processes. Information is meant to be descriptive or prescriptive, symbolic, and defined with regard to business objectives and users’ practice; it is an asset whose value and shelf-life are contingent on the persistency of technical architecture and the continuity of business operations.
Data analysis (left) and systems requirements (right)

Data mining (left) vs systems analysis (right)

Whatever the purpose and scheme, information has to be organized around identified objects or processes, with defined structures and semantics. When the process is fed by internal data from operational systems, information structures and semantics are already defined and data can be directly translated into knowledge (a).

From Data to Knowledge

From Data to Knowledge

Otherwise (b), the meanings and relevancy of external data has to be related to enterprise business model and technical architecture. That may be done directly by mapping data semantics to known descriptions of objects and processes; alternatively, rough data may be used to consolidate or extend the symbolic representation of contexts and concerns, and consequently the associated knowledge.

The next step is to compare this knowledge perspective to enterprise architectures and governance layers.

Enterprise Governance & Knowledge

From an architecture perspective, enterprises are made of human agents, devices, and symbolic (aka information) systems. From a business perspective, processes combine three categories of tasks: decision-making, monitoring, and execution. With regard to governance the primary objective is therefore to associate those categories to enterprise architecture components:

  • Decision-making can only be performed by human agents entitled to commitments in the name of the enterprise, individually or collectively. That is meant to be based on knowledge.
  • Executing physical or symbolic processes can be done by human agents, individually or collectively, or by devices and software systems subject to compatibility qualifications. That can be done with information (symbolic flows) or data (non symbolic flows).
  • Monitoring and controlling the actual effects of processes execution call for symbolic processing capabilities and can be achieved by human or software agents. That is supposed to be based on information (symbolic flows).
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Tasks Categories and Information Processing

On that basis, the business value of systems will depend on two primary achievements:

  1. Mapping business models to changing environments by sorting through facts, capturing the relevant data, and processing the whole into meaningful and up-to-date information.
  2. Putting that information into effective use through their business processes and supporting systems.

As long as business circumstances are stable, external and internal data can be set along commensurate time-spans and be processed in parallel. Along that scheme information is either “mined” from external data or directly derived (aka interpreted) from operational (aka internal) data by “knowledgeable” agents, human or otherwise.

But that dual scheme may become less effective under the pressure of volatile business opportunities, and obsolete given technological advances; bringing together data mining and production systems may therefore become both a business necessity and a technical possibility. More generally that would call for the merging of knowledge management and information systems, for symbolic representations as well as for their actual coupling with changes in environments.

Business Driven Perspective

As already noted, functional categories defined with regard to use (e.g business processes, software engineering, or operations) fall short when business processes and software applications are entwined one with the other, within the enterprise as well as without (cf IoT). In that case governance and knowledge management are better supported by an integrated processing of information organized with regard to the scope and time-span of decision-making:

  • Assets: shared decisions whose outcome bears upon multiple business domains and cycles. Those decisions may affect all architecture layers: enterprise (e.g organization), systems (e.g services), or platforms (e.g purchased software packages).
  • Business value: streamlined decisions governed by well identified business units driven by changing business opportunities. Those decisions provide for straight dependencies from enterprise (business domains and processes), to systems (applications) and platforms (e.g quality of service).
  • Non functional: shared decisions about scale and performances driven by changing technical circumstances. Those decisions affect locations (users, systems, or devices), deployed resources, or configurations.

Whereas these categories of governance don’t necessarily coincide with functional ones, they are to be preferred if supporting systems are to be seamlessly fed by internal and external data flows. In any case functional considerations are better dealt with by decision-makers in their specific organizational and business contexts.

Events & Decision Making

Weaving together information processing and knowledge management also requires actual coupling between changes in environments and the corresponding state of symbolic representations.

That requirement is especially critical when enterprise success depends on its ability to track, understand, and take advantage of changes in business environment; hence the importance of an integrated processing of internal and external events:

  • To begin with, the business time-frame (red) is set by facts (t1) registered through the capture of events and associated data (t2).
  • Then, a symbolic intermezzo (blue) is introduced during which data is analyzed, information updated (t3), knowledge extracted, and decisions taken (t4);
  • Finally, symbolic and business time-frames are to be synchronized through decision enactment and corresponding change in facts (t5).

DecMak_Timing

As it happens, and not by chance, the alignment of contents (with regard to assets, business value, and operations) can be directly used to synchronize business changes and symbolic surrogates.

Somewhat schematically, the focus can be put on the interval between change in prospective states (t3) and decision (t4): once all information regarding prospective states is available, how long to wait before committing to a decision ?

Assuming that decisions are to be taken at the “last responsible moment”, i.e until not taking side could affect the options, that interval will depend on the nature of decisions:

  • Operational decisions can be put to effect immediately. Since external changes can also be taken into account immediately, the timing is to be set by events occurring within the interval of production life-cycles.
  • Business value decisions are best enacted at the start of production cycles using inputs consolidated at completion. When analysis can be done in no time (t3=t4) and decisions enacted immediately (t4=t5), commitments can be taken from one cycle to the next. Otherwise some lag will have to be introduced. The last responsible moment for committing a decision will therefore be defined by the beginning of the next production cycle minus the time needed for enactment.
  • With regard to assets decisions are supposed to be enacted according to predefined plans. The timing of commitments should therefore combine planning (when a decision is meant to be taken) and events (when relevant and reliable information is at hand).

That taxonomy broadly coincides with the traditional distinction between operational, tactical, and strategic decisions.

Emerging Architectures

Melting the informational and behavioral schemes of knowledge management into operational systems creates a new breed of symbolic systems whose evolution can no longer be reduced to planned designs but may also include some autonomous capability. That possibility is bolstered by the integration of enterprise organization and systems with their business environment; at some point it may be argued that enterprise architectures emerge from a mix of cultural sediments, economic factors, technology constraints, and planned designs.

As enterprises grow and extend, architectures become more complex and have to be supported by symbolic representations of whatever is needed for their management: assets, roles, activities, mechanisms, etc. Hence the benefits of distinguishing between two kinds of models:

  • Models of business contexts and processes describe actual or planned objects, assets, and activities.
  • Models of symbolic artifacts describe the associated system representations used to store, process, or exchange information.
Entropy_muove

What moves first: actual contexts and processes or enterprise abstractions.

This apparent symmetry between models can be misleading as the former are meant to reflect a reality but the latter are used to produce one. In practice there is no guarantee that their alignment can be comprehensively and continuously maintained.

Assuming that enterprise architecture entails some kind of documentation, changes in actual contexts will induce new representations of objects and processes. At this point, the corresponding changes in models directly reflect actual changes, but the reverse isn’t true. For that to happen, i.e for business objects and processes being drawn from models, the bonds between actual and symbolic descriptions have to be loosened, giving some latitude for the latter to be modified independently of their actual counterpart. As noted above, specialization will do that for local features, but for changes to architecture units being carried on from models, abstractions are a prerequisite.

Interestingly, genetics can be used as a metaphor to illustrate the relationships between environments, enterprise architectures (organisms), and code (DNA).

According to classical genetics (left), phenotypes (actual forms and capabilities of organisms) inherit through the copy of genotypes (as coded by DNA), and changes between generations can only be carried out through changes in genotypes. Applied to systems, it would entail that changes can only happen after being programmed into the applications supporting enterprise organization and business processes.

Systems Genetics & Epigenetics

Systems evolution viewed through standard genetics (left) and epigenetics (right).

The Extended Evolutionary Synthesis (right) considers the impact of non coded (aka epigenetic) factors on the transmission of the genotype between generations. Applying the same principles to systems would introduce new mechanisms:

  • Enterprise organization and its usage of systems could be adjusted to changes in environments independently of changes in coded applications.
  • Enterprise architects could assess those changes and practical adjustments, plan systems evolution, and use abstractions to consolidate their new designs with legacy applications.
  • Models and applications would be transformed accordingly.

That epigenetic understanding of systems would put the onus of their evolutionary fitness on the plasticity and versatility of applications.

EA: Entropy Antidote

The genetics metaphor comes with a teleological perspective as it assumes that nothing happens without a reason. Cybernetics goes the other way and assumes that disorder and confusion will ensue from changing environments and tentative adjustments.

Originally defined by thermodynamic as a measure of heat dissipation, the concept of entropy has been taken over by cybernetics as a measure of the (supposedly negative) variation in the value of information supporting organisms sustainability. Applied to enterprise governance, entropy will be the result of untimely and inaccurate information about the actual state of assets capabilities, and challenges.

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Governance depends on timely and accurate information about the actual state of assets, capabilities, and challenges.

One way to assess those factors is to classify changes with regard to their source and modality.

With regard to source:

  • Changes within the enterprise are directly meaningful (data>information), purpose-driven (information>knowledge), and supposedly manageable.
  • Changes in environment are not under control, they may need interpretation (data<?>information), and their consequences or use are to be explored (information<?>knowledge).

With regard to modality:

  • Data associated with planned changes are directly meaningful (data>information) whatever their source (internal or external); internal changes can also be directly associated with purpose (information>knowledge);
  • Data associated with unplanned internal changes can be directly interpreted (data>information) but their consequences have to be analyzed (information<?>knowledge); data associated with unplanned external changes must be interpreted (data<?>information).

Entropy_changes

Assuming with Stafford Beer that viable systems must continuously adapt their capabilities to their environment, this taxonomy has direct consequences for enterprise governance:

  • Changes occurring within planned configurations are meant to be dealt with, directly (when stemming from within enterprise), or through enterprise adjustments (when set in its environment).
  • That assumption cannot be made for changes occurring outside planned configurations because the associated data will have to be interpreted and consequences identified prior to any decision.

Enterprise governance will therefore depend on the way those changes are taken into account, and in particular on the capability of enterprise architectures to process the flows of associated data into information, and to use it to deal with variety. On that account the key challenge is to manage the relevancy and timely interpretation and use of the data, in particular when new data cannot be mapped into predefined  semantic frame, as may happen with unplanned changes in contexts. How that can be achieved will depend on the processing of data and its consolidation into information as carried on at enterprise level or by business and technical units.

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Data must processed into information and knowledge with regard to scope.

Within that working assumption, the focus is to be put on enterprise architecture capability to “read” environments (from data to information), as well as to “update” itself (putting information to use as knowledge).

Enterprise Environment: Internet & Semantic Web

Nowadays and for all practicality, it may be assumed that enterprises have to rely on the internet for “reading” their physical or symbolic environment. Yet, as suggested by the labels Internet of Things (IoT) and Semantic Web, two levels must be considered:

  • Identities of physical or social entities are meant to be uniquely defined across the internet.
  • Meanings are defined by users depending on contexts and concerns; by definition they necessarily overlap or even contradict.
Contrary to identities, meanings usually overlap when things float free from systems' governance.

Contrary to identities, meanings usually overlap when things float free from systems’ governance.

Depending on purpose and context, meanings can be:

  • Inclusive: can be applied across the whole of environments.
  • Domain specific: can only be applied to circumscribed domains of knowledge. That’s the aim of the semantic web initiative and the Web Ontology Language (OWL).
  • Institutional: can only be applied within specific organizational or enterprise contexts. Those meanings could be available to all or through services with restricted access and use.

That can be illustrated by a search about Amedeo Modigliani:

  • A inclusive search for “Modigliani” will use heuristics to identify the artist (a). An organizational search for an homonym (e.g a bank customer) would be dealt with at enterprise level, possibly through an intranet (c).
  • A search for “Modigliani’s friends” may look for the artist’s Facebook friends if kept at the inclusive level (a1), or switch to a semantic context better suited to the artist (a2). The same outcome would have been obtained with a semantic search (b).
  • Searches about auction prices may be redirected or initiated directly, possibly subject to authorization (c).
Meanings can be inclusive, domain specific, or institutional

Meanings can be inclusive, domain specific, or institutional

Given the interconnection with their material and social environments, enterprises have to align their information systems on internet semantic levels. But knowledge not being a matter for boundaries, there are clear hazards for enterprises to expose their newborn knowledgeable systems to the influence of anonymous and questionable external sources.

Porous Borders and Unfathomable Environments

Since knowledge cannot be neatly tied up in airtight packages, enterprise systems have to exchange more than data with their environment. Dedicated knowledge management systems, by filtering the meanings of incoming information, insulate core enterprise systems from stray or hazardous interpretations. But intertwining KM and production systems makes the fences more porous, and the risks are compounded by the spread of intelligent but inscrutable systems across the net. As a consequence securing accesses to information is not enough and systems must also secure their meanings (inclusive, specific, or institutional), and their origin.

For that purpose a distinction has to be made between two categories of “intelligent” sources:

  • Fellow KM systems relying on symbolic representations that allow for explicit reasoning: data is “interpreted” into information which is then put to use as the knowledge governing behaviors.
  • Intelligent devices relying on neuronal networks carrying out implicit information processing: data is “compiled” into neuronal connections whose weights (representing knowledge ) are tuned iteratively based on behavioral feedback.

On that basis systems capability and responsibility can be generalized from enterprise to network level:

Unsupervised (a), embedded (b), and distributed (c) decision making.

Unsupervised (a), embedded (b), and distributed (c) decision making.

  • Embedded knowledge from identified and dedicated devices can directly feed process control whenever no responsibility is engaged (a).
  • Feeding explicit knowledge management with external implicit (aka embedded) knowledge is more problematic due to the hazards of mixed and potentially inconsistent semantics (b).
  • Symbolic knowledge can be used (c) to distribute information, or support decision making and process control.

As a concluding remark, it appears that the convergence of information and knowledge management systems is better apprehended in the broader perspective of a intertwined network of symbolic systems characterized by their status (inclusive, specific, organizational), and modus operandi (explicit or implicit).

Further Readings

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