CN106557480A - Implementation method and device that inquiry is rewritten - Google Patents

Implementation method and device that inquiry is rewritten Download PDF

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CN106557480A
CN106557480A CN201510621932.2A CN201510621932A CN106557480A CN 106557480 A CN106557480 A CN 106557480A CN 201510621932 A CN201510621932 A CN 201510621932A CN 106557480 A CN106557480 A CN 106557480A
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expansion word
word
history
expansion
feature
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CN106557480B (en
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吴黎霞
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Alibaba Group Holding Ltd
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Alibaba Group Holding Ltd
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/24Querying
    • G06F16/245Query processing
    • G06F16/2453Query optimisation
    • G06F16/24534Query rewriting; Transformation
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/24Querying
    • G06F16/242Query formulation
    • G06F16/2433Query languages
    • G06F16/2448Query languages for particular applications; for extensibility, e.g. user defined types

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  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computational Linguistics (AREA)
  • Data Mining & Analysis (AREA)
  • Databases & Information Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)

Abstract

The disclosure provides implementation method and the device that a kind of inquiry is rewritten, and the method can include:Obtain the expansion word set corresponding with the searching keyword of user input;Determine satisfaction degree of each expansion word in the expansion word set to pre-set business target, and the expansion word in the expansion word set is ranked up according to the satisfaction degree;The expansion word of the first predetermined number of arrangement is chosen, using as the expansion word result corresponding with the searching keyword.By the technical scheme of the disclosure, expansion word result can be made to meet pre-set business target as much as possible.

Description

Implementation method and device that inquiry is rewritten
Technical field
It relates to search technique field, more particularly to the implementation method and device of inquiry rewriting.
Background technology
User under many scenes is required for using function of search.When search operation is performed, user can be with Any search keyword is input into, and corresponding Search Results is provided by search engine.
However, the search keyword of user input is often relatively more random, user can not be directly embodied Actual intention, cause Search Results meet the actual demand of user.
The content of the invention
In view of this, the disclosure provides implementation method and the device that a kind of inquiry is rewritten, and can make at expansion word Reason result meets pre-set business target as much as possible.
For achieving the above object, disclosure offer technical scheme is as follows:
According to the first aspect of the disclosure, it is proposed that the implementation method that a kind of inquiry is rewritten, including:
Obtain the expansion word set corresponding with the searching keyword of user input;
Determine satisfaction degree of each expansion word in the expansion word set to pre-set business target, and root The expansion word in the expansion word set is ranked up according to the satisfaction degree;
The expansion word of the first predetermined number of arrangement is chosen, using as corresponding with the searching keyword Expand word result.
According to the second aspect of the disclosure, it is proposed that what a kind of inquiry was rewritten realizes device, including:
Acquiring unit, obtains the expansion word set corresponding with the searching keyword of user input;
Determining unit, determines satisfaction of each expansion word in the expansion word set to pre-set business target Degree;
Sequencing unit, is ranked up to the expansion word in the expansion word set according to the satisfaction degree;
Unit is chosen, the expansion word of the first predetermined number of arrangement is chosen, to inquire about crucial as with described The corresponding expansion word result of word.
From above technical scheme, the disclosure is expired to pre-set business target by determining each expansion word Sufficient degree, and realize the sequence to expansion word accordingly and choose so that the expansion word for finally giving can be true Protect with the maximization of the pre-set business target.
Description of the drawings
Fig. 1 is the flow chart of the implementation method that a kind of inquiry that one exemplary embodiment of the disclosure is provided is rewritten;
Fig. 2 is a kind of flow chart of training pattern that one exemplary embodiment of the disclosure is provided;
Fig. 3 is the flow process of the implementation method that another kind of inquiry that one exemplary embodiment of the disclosure is provided is rewritten Figure;
Fig. 4 is the structural representation of a kind of electronic equipment that one exemplary embodiment of the disclosure is provided;
Fig. 5 is the block diagram for realizing device that a kind of inquiry that one exemplary embodiment of the disclosure is provided is rewritten.
Specific embodiment
As described by background section, due to the search keyword of user input it is more random, it is past Toward its true intention can not be embodied, so as to cause Search Results not meet the actual demand of user.For The technical problem is solved, QR (query rewrite, inquiry rewrite) is proposed in correlation technique and is processed Means, can be analyzed by the search keyword to user input, and replace with automatically and can embody The expansion word of the actual intention of user.
In the related, it is proposed that many kinds realize the technological means of QR.For example, such as:
(1) method of text similarity is directly based upon, by bag of words (BOW, bag of word) mould Search keyword and expansion word are expressed as vector space by type, and similarity is calculated in vector space.
For mode (1), this mode can embody the similarity between text well;But, This mode cannot be calculated does not have the similarity between the search keyword of co-occurrence word and expansion word (such as cannot It is determined that the similarity of " Fructus Mali pumilae " and iphone between), and when same word has various explanations, Be easy to bad (not meeting the actual demand of user) occur expansion word (as " Fructus Mali pumilae fruit basket " with " i Phone ").
(2) directly QR process is carried out using the search data in same Session (session).
For mode (2), this mode is error-prone with respect to not allowing, and is better than mode in terms of accuracy rate (1);But, as user is unwilling to be input into repeatedly search keyword, cause the overlay capacity of this mode And to push away word amount often little.
(3) using feedback data such as historical search daily records building the bigraph (bipartite graph) of search keyword-expansion word, Similarity between each search keyword is calculated using modes such as SimRank.
For mode (3), the co-occurrence of this mode usage history search Web log mining clicks on feedback coefficient According to method, can the information architecture that provides of a large amount of domestic consumers of effectively utilizes click on bigraph (bipartite graph), pass through The methods such as SimRank can obtain the similarity between Query;But, this mode cannot be captured not The similarity interosculated between the search keyword hit, the particularly especially many positions of new search key word It is limited in terms of overlay capacity, such as " Fructus Mali pumilae Mobile phone " and " apple mobile phones ", such as the two words are in point Hit and click on to transmit jointly on the whole link of bigraph (bipartite graph), then " Fructus Mali pumilae Mobile phone " and " apple Mutually extension can not be realized between mobile phone ", therefore this mode also seems not enough on word coverage rate is pushed away.
(4) using a large number of services object data (such as title, description details etc.), excavate key word with Frequent relation between key word;And set up similar between each search keyword using this frequent relation Degree.
For mode (4), this mode is often searched for because not being that direct search key word sets out Key word pushes away deficiency in terms of word coverage rate, and the search keyword of many long-tails is not covered substantially.
As can be seen here, there is the advantage of itself in above-mentioned every kind of QR modes, can obtain at corresponding aspect To extraordinary expansion word;But meanwhile, every kind of QR modes there is also the inferior position of itself, cause pushing away word Shortcomings in terms of coverage rate, accuracy, and can not often meet actual business objective.
Therefore, the disclosure is processed to expansion word based on pre-set business target, and by correlation technique In one or more QR technological means combination, make full use of every kind of QR modes expand word in terms of Advantage, to solve technical problem present in correlation technique.One of skill in the art will understand that, this Disclosed technical scheme can be scaled up to the various of the internet, applications environment related to search and occupation mode Under.
It is that the disclosure is further described, there is provided the following example:
Fig. 1 is the flow chart of the implementation method that a kind of inquiry that one exemplary embodiment of the disclosure is provided is rewritten, As shown in figure 1, the method may comprise steps of:
Step 102, obtains the expansion word set corresponding with the searching keyword of user input.
In the present embodiment, expansion word set there may be various sources, as long as corresponding to user input Searching keyword, the disclosure are not limited to this.
For example, in one embodiment, these expansion word set can be by third-party application to The searching keyword of family input is processed and is derived, or directly by the expansion word set of outside input. In one embodiment, the third-party application can be the remote application or remote entity based on the Internet, It can also be the third-party application for locally being called.In one embodiment, the outside input can be base The input that remote entity in the Internet is transmitted.
And one can with reference to or alternative embodiment in, these expansion word set can be according to predefined One or more inquiry rewriting algorithms, carries out expansion word respectively and processes and obtain to the searching keyword of user input Arrive,
In the present embodiment, the QR processing modes in correlation technique can be applied to " looking into herein Ask rewriting algorithms ", the disclosure is not limited to this;In fact, by looking into using a greater variety of Rewriting algorithms are ask, the technical scheme of the disclosure can be made to obtain the expansion word that these inquiry rewriting algorithms are obtained, So that more preferably accuracy and coverage rate are realized in expansion word set.
Step 104, determines satisfaction of each expansion word in the expansion word set to pre-set business target Degree, and the expansion word in the expansion word set is ranked up according to the satisfaction degree.
In the present embodiment, various types of business objectives can be pre-configured with, to meet practical business need Ask.For example, it is assumed that business demand is to find the expansion word for meeting user's request as far as possible, then business Target could be arranged to the displaying amount of object search, click volume etc.;It is assumed that business demand is pushed to user More meet the desired product of user, then business objective could be arranged to product by quantity ordered, the quilt of product Volumes of searches, clicked amount, sales volume etc.;Or, when needing to perform the popularization of advertising business, business is needed It can be to find to ask, then business objective could be arranged to search RPM (the Revenue Per Thousand Ad Impressions, per thousand advertising unit displayings of object Income) etc..One of skill in the art will understand that, the business demand and business objective of the disclosure can quilts Extend under the various of the internet, applications environment and occupation mode related to search.
Step 106, chooses the expansion word of the first predetermined number of arrangement, to inquire about crucial as with described The corresponding expansion word result of word.
In the present embodiment, by determining satisfaction degree of each expansion word to pre-set business target, and according to This realizes the sequence to expansion word and chooses so that the expansion word for finally giving is able to ensure that with the default industry The maximization of business target.
It is to be noted that:In the related, QR algorithms itself are only focused on for the generation of expansion word Process, search keyword of user input etc. such as so that expansion word is more fitted, and be not directed to it is right The further screening of expansion word, is more not directed to be ranked up expansion word and sieved based on pre-set business target The processing procedure of choosing.
So, in the technical scheme of the disclosure, in order to ensure satisfaction of the expansion word to pre-set business target Situation, can be accomplished by:According to pre-configured expansion word analysis model, expansion is respectively obtained Satisfaction degree of each expansion word in exhibition set of words to pre-set business target;Wherein, the expansion word is analyzed Model is to be trained to obtain according to historical search daily record.In the technical scheme, searched by obtaining history Suo Zhi, it can be realized that carry out expanding after word process to historical search key word, the history expansion word for obtaining Situation is met to the actual of pre-set business target, so as to hereby it is possible to being more accurately predicted out for current The search keyword of user input, each expansion word in corresponding expansion word set is to pre-set business target Meet situation.
Therefore, according to the order of occurrence of whole process, the disclosure can include two stages:First, train Model;2nd, inquiry is rewritten.Below for the above-mentioned two stage, it is described in detail respectively.
Stage one:Training pattern
Fig. 2 is a kind of flow chart of training pattern that one exemplary embodiment of the disclosure is provided, such as Fig. 2 institutes Show, the training process of model may comprise steps of:
1) data Layer
Step 202, obtains historical search daily record.
In the present embodiment, the historical search daily record in random time section can be obtained;When historical search day When will is more, trains the model for obtaining be better able to meet actual demand, but need data to be processed Amount is likely to bigger.In one exemplary embodiment, it is assumed that choose the historical search daily record in 58 days. In other alternative embodiments, the historical search daily record of 30 days, 90 days, 120 days or other natural law is chosen, Can apply in the technical scheme of the disclosure.
Step 204, from historical search daily record, extracts historical query key word, history expansion word and each The historic effect of dimension.
In the present embodiment, there are many historical query key words in historical search daily record, each history is looked into Ask key word and there are corresponding one or more history expansion words, be all under historic state, to pass through QR algorithms The expansion word that process is obtained.Wherein, if each historical query key word and a corresponding history are expanded As a word to (pair), then to there is corresponding historic effect, and history effect in each word to exhibition word Fruit there may be one or more dimensions, such as the amount of representing dimension, click volume dimension, clicking rate dimension, Geographical position latitude, time latitude, RPM dimensions etc..
2) characteristic layer
Step 206, according to the data extracted in step 204 and pre-configured feature platform table, it is determined that Corresponding foundation characteristic and advanced features, and form feature group.
In the present embodiment, " feature group " is by historical query keyword feature and history expansion word feature structure Into history satisfaction degree of the disclosure exactly according to each feature group to pre-set business target, training are obtained Final expansion word analysis model.
Wherein, the historical query key word phase in " historical query keyword feature " and historical search daily record Close, and " history expansion word feature " is related to the history expansion word in historical search daily record.Therefore, walk Rapid 206, exactly to data such as the historical query key word that obtains in step 204 and history expansion words, generate Above-mentioned historical query keyword feature and history expansion word feature.
And specifically determining and filtering out " historical query keyword feature " and " history expansion word feature " When, matching can be carried out according to pre-configured feature platform table from above-mentioned historical search daily record and be obtained. Wherein, in feature platform table, record has pre-configured special to historical query keyword feature and history expansion word The characterization information levied, the i.e. condition of execution Feature Selection, such as " historical query key word itself ", " keyword that historical query key word is included ", " preset attribute of historical query key word ", " go through History expansion word ", " keyword that history expansion word is included ", " preset attribute of history expansion word ", " represent amount of the history expansion word in Preset Time window ", " click volume " etc., this also corresponds to down The characteristic type that text will be included in each feature set mentioned.
Can be with reference to/alternative embodiment according to one, feature platform table is to match somebody with somebody according to different business demand in advance Put.For example, feature platform table can be the data in the historical search daily record that basis ought be for the previous period Collected and analyzed derived, a large amount of search and/or inquire about institute's general character that representative ought be interior for the previous period Characterization information.Feature platform table can be updated regularly, and augment or delete.
(1) historical query keyword feature
The corresponding historical query keyword feature of each historical query key word can include by it is following at least it The one first foundation feature set for constituting:The pass that the historical query key word, the historical query key word are included The preset attribute of key word, the historical query key word.
For example, it is assumed that historical query key word is " Fructus Mali pumilae Mobile phone ", then historical query is crucial The keyword that word is included can be the core word in " Fructus Mali pumilae Mobile phone ", such as " Fructus Mali pumilae ", " new Money ", " mobile phone " etc.;And the preset attribute of historical query key word, can be crucial for the historical query Prediction classification of word etc., such as " digital product " etc..
It can be seen that, in first foundation feature set, historical query keyword feature is all that the historical query is crucial The content directly included in the word of word, or the attribute information of historical query key word, can be direct Obtain processing without carrying out data statisticss etc., thus " foundation characteristic " referred in belonging to step 206.
(2) history expansion word feature
The corresponding history expansion word feature of each history expansion word includes second be made up of at least one of Foundation characteristic collection:Keyword that the history expansion word, the history expansion word are included, the history expansion word Preset attribute.
Second foundation characteristic collection is similar with above-mentioned first foundation feature set, refers in belonging to step 206 " foundation characteristic ".For example, it is assumed that when historical query key word is " Fructus Mali pumilae Mobile phone ", One history expansion word is " iphone6P ", then the keyword that history expansion word is included can be " iphone6P " Core word, such as " iphone ", " 6P " etc.;And the preset attribute of history expansion word, Ke Yiwei Any attribute of the history expansion word, such as in an exemplary application scene, a such as O2O (Online To Offline, on line under line) businessman commercial articles searching, then the preset attribute of history expansion word can be (i.e. corresponding commodity of history expansion word, the purchase frequency of such as commodity are higher, then temperature is got over for commodity temperature It is high), the search frequency (frequency/number of times for operating such as is scanned for using the history expansion word), place an order The frequency (the lower unifrequency/number of times after operating is scanned for using the history expansion word such as), geographic preferences (user's more preference commodity in such as a certain area), (such as user more concentrates on time preference Place an order within certain time period), user preference (such as meet the user of the features such as certain class sex, age More preference commodity), these attributes can by O2O businessmans order volume over a period to come, The identity information (comprising customer position information, sex, age etc.) of register user, user price preference Obtain etc. being analyzed.
Certainly, the technical scheme of the disclosure can also be applied to more scenes.Such as user is using arbitrarily searching Index is held up under the scene of execution information retrieval, and the preset attribute of history expansion word can be searching for active user (such as when historical query key word is " one-piece dress ", history expansion word is " red to rope historical data One-piece dress "), (such as user has recently input searching keyword for " purple connects clothing to current search data Skirt "), the global search hot word of search engine (such as many users tend to " yellow one-piece dress ") Deng, so as to be input in user again when " one-piece dress ", can be to " red one-piece dress ", " purple company Clothing skirt " and " yellow one-piece dress " are extended and show.For another example, if history expansion word is business The word of bidding (Bidword) of family's purchase, then the preset attribute of the history expansion word can be corresponding including which Buy depth, recall depth, average bid, maximum bid etc..
One of skill in the art will understand that, the preset attribute of the disclosure can be according to each of internet, applications Kind with the environment and occupation mode of search correlation and carry out corresponding customizing and/or changing.
Optionally, in addition to the second foundation characteristic collection, the corresponding history expansion word feature of history expansion word The advanced features collection being made up of at least one of can also be included:The history expansion word is in Preset Time window Mouthful in represent the click situation statistical value of situation statistical value, the history expansion word in Preset Time window. Specifically, such as history expansion word " iphone6P " is in continuous 8 days, in 5 days, in 3 days, 1 day The statistical nature of the interior amount of representing, click volume, clicking rate and other effects feedback data.It can be seen that, advanced features Collection is the feature that the statistical disposition based on feedback data is furthermore achieved that on the basis of foundation characteristic collection Set.
In sum, the feature that step 206 is obtained can include:
Foundation characteristic:Historical search key word, the core word of historical search key word, historical search are crucial Preset attribute, history expansion word, the core word of history expansion word, the history expansion words such as the prediction classification of word The preset attribute such as purchase depth.Wherein, between historical search keyword feature and history expansion word feature Simple characteristic crossover is there is likely to be, such as by the core word and history expansion word of historical search key word Core word carry out intersecting and obtain a new foundation characteristic.
Advanced features:Represent amount of the history expansion word in Preset Time window, click volume and other effects are fed back The statistical nature of data.
Accordingly, each historical search keyword feature and corresponding each history expansion word feature can be with A feature group is combined as, and pre-set business target is expired comprising each feature group in historical search daily record " historic effect " referred in sufficient situation, i.e. step 204.
3) model layer
Step 208, carries out numerical discretization to the corresponding business objective of each feature group.
In the present embodiment, whole feature architecture is constituted by above-mentioned foundation characteristic and advanced features, Such that it is able to this feature system to be expressed as the input example of model, then each input example include one it is special Levy group and this feature group and situation is met to pre-set business target.For example, it is assumed that pre-set business mesh RPM value is designated as, then each corresponding RPM value (" meeting situation ") of input example can be entered Row discretization, then the value after discretization is exactly the target of model sequence.
Certainly, pre-set business target can also include other types, this industry with the technical scheme of the disclosure Business scene is related.Such as the business scenario can include at least one of:Information retrieval scene, sale Scene, advertisement bidding scene etc., the disclosure is not limited to this.So, in information retrieval scene Under, pre-set business target can be " clicking rate ", " rate is adopted in search " or " click volume " etc.; Under sale scene, pre-set business target can be " place an order rate ", " amount of placing an order ", or " sales volume " Deng;Under advertisement bidding scene, pre-set business target can be above-mentioned RPM value etc..
Step 210, the RankSVM algorithms based on pairwise-learning (learning in pairs) are to above-mentioned Input example be trained, obtain corresponding expansion word analysis model.
In the present embodiment, can by it is all of input example carry out IDization, be then divided into training set and Two parts of test set, training set part are used for model training herein, and test set part is used for subsequently Model checking.
In the present embodiment, for inquiry q (query), multiple input examples and extension can be obtained Input example.It is when using being trained based on the RankSVM algorithms of pairwise-learning, main If optimization is with minor function:
Where it is assumed that xi、xjFor i-th and j-th input example (instance), which may include m Individual feature (m is positive integer), then the target of model training is exactly to be madeDuring w when minimum, w are all input examples All features corresponding to the characteristic vector that constituted of feature weight.C is constant value, can be according to mould The hypothesis of type carrys out value.
Additionally, P defines the scope of i and j, it is defined as follows:
P ≡ (i, j) | qi=qj, yi> yj} (2)
Wherein, qi=qjExpression requires xiExample and xjExample belongs to same inquiry query.And according to industry The difference of business scene, yiThere can be different expressions.For example, if business scenario is search environment, and The business objective of concern is that rate is adopted in the search of user, then yiRepresent that i-th instance is corresponding discrete Rate is adopted in search after change.If business scenario is shopping environment, and the business objective paid close attention to is the amount of placing an order, Then yi represents the amount of placing an order after the corresponding discretization of i-th instance.If business scenario is advertisement pushed away Ringoid border, and the business objective paid close attention to is RPM value, then yiRepresent that i-th instance is corresponding discrete RPM value after change.Therefore, yi> yjMean that and required xiBusiness objective after the discretization of example It is greater than xjExample.
In the present embodiment, by adopting RankSVM algorithms based on pairwise-learning, can be with Which is made full use of to be directed to the training characteristic of " to (pair) " feature, for other algorithms, When being trained to above-mentioned feature group, contribute to the accuracy and effectiveness of lift scheme.
Step 212, verifies to the expansion word analysis model that training is obtained.
In the present embodiment, can be according to the input example of above-mentioned " another part ", to the expansion word Analysis model verified, the NDCG of the expansion word analysis model is such as calculated by test set (Normalized Discounted Cumulative Gain) value, to assess the ordering scenario of the model. Through actual test, the NDCG values of the expansion word analysis model obtained based on disclosure training can reach More than 0.8.
Stage two:Inquiry is rewritten
Fig. 3 is the flow process of the implementation method that another kind of inquiry that one exemplary embodiment of the disclosure is provided is rewritten Figure, as shown in figure 3, the process for performing inquiry rewriting may comprise steps of:
Step 302, based on one or more QR algorithm, expands to the search keyword of user input Word process.
In the present embodiment, the arbitrary QR algorithms in correlation technique can apply to the enforcement of the disclosure In example, the disclosure is not limited to this.
Step 304, merges to the expansion word result that all QR algorithms are obtained, and be expanded set of words.
In the present embodiment, in addition to the set of words that is expanded by QR algorithms, it is also possible to by which His any-mode obtains the expansion word set;For example, such as by third-party application to user input Searching keyword is processed and is derived and obtained or directly by outside input etc..
Step 306, carries out the prescreening based on dependency to the expansion word in expansion word set.
In the present embodiment, it is less than to the degree of association of searching keyword in screening out expansion word set default related The expansion word of degree, to guarantee that expansion word has certain dependency with the search keyword of user input.Lift For example, when the search keyword of user input is " Fructus Mali pumilae Mobile phone ", if expansion word is " bar Western Semen Pini ", then as difference between the two is huge, should be screened out.As an exemplary enforcement Mode, when expansion word belongs to same classification with search keyword, it is believed that the expansion word and searching keyword Degree of association reach default degree of association, and inhomogeneity purpose expansion word is screened out.
Certainly, in addition to affiliated classification, it is clear that by other means expansion word can also be realized being based on The prescreening of dependency is processed, and the disclosure is not limited to this.For example, can such as screen out The expansion word not " paid close attention to by user " in expansion word set;Wherein, under information retrieval scene, " quilt User pays close attention to " can be understood as:Concentrated the expansion word of search in a short time always by a large number of users;In O2O Under sale scene, " being paid close attention to by user " can be understood as:In a short time always by a large number of users (example of interest Such as, put into collection list), bought, or the expansion word commented on;When search platform is needed to user When carrying out advertisement promotion, " being paid close attention to by user " herein can be understood as:It is word of bidding by businessman's purchase, Especially when pre-set business target is to lift the advertisement business revenue of search platform, by screening out non-word of bidding, The word that may insure to bid has more preferable RPM value.
Step 308, according to pre-configured expansion word analysis model, extends to each in expansion word set Word is ranked up process.
In the present embodiment, by embodiment as shown in Figure 2, training obtains expansion word analysis herein Model.Embodiment as shown in Figure 2 understands that the weighted value that the model goes out according to training in advance, prediction are worked as Meet situation of each expansion word of front input to pre-set business target, and situation is met according to this arranged Sequence process.Wherein, shown in the computational methods of the weighted value such as formula (3).
Score=WTX=ΣJ=1wj*xj (3)
It can be seen that, by the model training of the disclosure and inquiry rewriting process, so as to get expansion word be all with For the purpose of pre-set business target, as long as thus the business objective needed for being input into during model training, i.e., Can ensure that the expansion word for finally giving meets actual demand.
Step 310, according to expansion word quantity set in advance, chooses the first multiple expansion words of arrangement.
In the present embodiment, the consideration based on aspects such as system operations abilities, only needs to certain amount every time Expansion word, thus the first multiple expansion words of arrangement can be chosen, i.e. the satisfaction to pre-set business target The optimum multiple expansion words of situation;For example when expansion word quantity is 3, selection is arranged in the extension of first three Word.
Fig. 4 shows the schematic configuration diagram of the electronic equipment of the exemplary embodiment according to the disclosure.Please With reference to Fig. 4, in hardware view, the electronic equipment includes processor, internal bus, network interface, interior Deposit and nonvolatile memory, the hardware being also possible that required for other business certainly.Processor from Corresponding computer program is read in nonvolatile memory in internal memory and then is run, on logic level Form inquiry rewriting realizes device.Certainly, in addition to software realization mode, the disclosure is not precluded from Mode of other implementations, such as logical device or software and hardware combining etc., that is to say, that locate below The executive agent of reason flow process is not limited to each logical block, or hardware or logical device.
Fig. 5 is refer to, in Software Implementation, what the inquiry was rewritten realizes that device can include expanding word Unit, determining unit, sequencing unit and selection unit.Wherein:
Acquiring unit, obtains the expansion word set corresponding with the searching keyword of user input;
Determining unit, determines satisfaction of each expansion word in the expansion word set to pre-set business target Degree;
Sequencing unit, is ranked up to the expansion word in the expansion word set according to the satisfaction degree;
Unit is chosen, the expansion word of the first predetermined number of arrangement is chosen, to inquire about crucial as with described The corresponding expansion word result of word.
Optionally, the acquiring unit obtains the expansion word set by least one of following manner:
According to predefined one or more inquiry rewriting algorithms, the searching keyword of user input is carried out Expand word to process, obtain the expansion word set corresponding with the searching keyword of user input;
Reception is processed and derived expansion-word set to the searching keyword of user input by third-party application Close;And
Receive the expansion word set corresponding with the searching keyword of user input directly by outside input.
Optionally, the determining unit specifically for:
According to pre-configured expansion word analysis model, each extension in the expansion word set is respectively obtained Satisfaction degree of the word to the pre-set business target;Wherein, the expansion word analysis model is according to history Search daily record is trained and obtains.
Optionally, the expansion word analysis model is according to extracting from the historical search daily record by going through The feature group that history searching keyword feature is constituted with history expansion word feature, and each feature group is to described The history satisfaction degree of pre-set business target is trained and obtains;
Wherein, the historical query keyword feature is crucial with the historical query in the historical search daily record Word is related, and the history expansion word feature is related to the history expansion word in the historical search daily record.
Optionally, the historical query keyword feature and the history expansion word are characterized in that according to pre-configured Feature platform table match from the historical search daily record and obtain;
Wherein, in the feature platform table record have it is pre-configured to the historical query keyword feature and The characterization information of the history expansion word feature.
Optionally, the corresponding historical query keyword feature of each historical query key word include by with down to One of few first foundation feature set for constituting:
Keyword that the historical query key word, the historical query key word are included, the history are looked into Ask the preset attribute of key word.
Optionally, the corresponding history expansion word feature of each history expansion word is included by least one of structure Into the second foundation characteristic collection:
Keyword that the history expansion word, the history expansion word are included, the history expansion word it is pre- If attribute.
Optionally, the corresponding history expansion word feature of each history expansion word is also included by least one of The advanced features collection of composition:
The history expansion word represents situation statistical value, the history expansion word in Preset Time window Click situation statistical value in Preset Time window.
Optionally, the expansion word analysis model is by based on study pairwise-learning in pairs RankSVM algorithms are trained to the feature group and obtain.
Optionally, also include:
First screens out unit, the expansion word do not paid close attention to by user in screening out the expansion word set.
Optionally, also include:
Second screens out unit, screens out in the expansion word set and is less than with the degree of association of the searching keyword The expansion word of default degree of association.
Optionally, the pre-set business target is related to business scenario, the business scenario include with down to It is one of few:
Information retrieval scene, sale scene, advertisement bidding scene.
Optionally, when the business scenario is information retrieval scene, the pre-set business target is following At least one:Rate, click volume are adopted in clicking rate, search;When the business scenario is to sell scene, The pre-set business target is at least one of:Place an order rate, the amount of placing an order, sales volume;When the business Scene be advertisement bidding scene when, the pre-set business target for advertising unit displaying number of times reach it is default Revenue during number of times.
One it is typical configure, computing device include one or more processors (CPU), input/ Output interface, network interface and internal memory.
Internal memory potentially includes the volatile memory in computer-readable medium, random access memory And/or the form, such as read only memory (ROM) or flash memory (flash such as Nonvolatile memory (RAM) RAM).Internal memory is the example of computer-readable medium.
Computer-readable medium includes that permanent and non-permanent, removable and non-removable media can be by Any method or technique is realizing information Store.Information can be computer-readable instruction, data structure, The module of program or other data.The example of the storage medium of computer includes, but are not limited to phase transition internal memory (PRAM), static RAM (SRAM), dynamic random access memory (DRAM), Other kinds of random access memory (RAM), read only memory (ROM), electrically erasable Read only memory (EEPROM), fast flash memory bank or other memory techniques, read-only optical disc read only memory (CD-ROM), digital versatile disc (DVD) or other optical storages, magnetic cassette tape, tape magnetic Disk storage or other magnetic storage apparatus or any other non-transmission medium, can be used for storage can be counted The information that calculation equipment is accessed.Define according to herein, computer-readable medium does not include that temporary computer can Read media (transitory media), the such as data signal and carrier wave of modulation.
Also, it should be noted that term " including ", "comprising" or its any other variant be intended to it is non- Exclusiveness is included, so that a series of process, method, commodity or equipment including key elements is not only Including those key elements, but also including other key elements being not expressly set out, or also include for this The intrinsic key element of process, method, commodity or equipment.In the absence of more restrictions, by language The key element that sentence "including a ..." is limited, it is not excluded that in the process including the key element, method, business Also there is other identical element in product or equipment.
The preferred embodiment of the disclosure is the foregoing is only, it is not to limit the disclosure, all at this Within disclosed spirit and principle, any modification, equivalent substitution and improvements done etc. should be included in Within the scope of disclosure protection.

Claims (26)

1. the implementation method that a kind of inquiry is rewritten, it is characterised in that include:
Obtain the expansion word set corresponding with the searching keyword of user input;
Determine satisfaction degree of each expansion word in the expansion word set to pre-set business target, and root The expansion word in the expansion word set is ranked up according to the satisfaction degree;
The expansion word of the first predetermined number of arrangement is chosen, using as corresponding with the searching keyword Expand word result.
2. method according to claim 1, it is characterised in that the acquisition is looked into user input Ask key word and mutually obtain corresponding expansion word set, including at least one of:
According to predefined one or more inquiry rewriting algorithms, the searching keyword of user input is carried out Expand word to process, obtain the expansion word set corresponding with the searching keyword of user input;
Reception is processed and derived expansion-word set to the searching keyword of user input by third-party application Close;And
Receive the expansion word set corresponding with the searching keyword of user input directly by outside input.
3. method according to claim 1, it is characterised in that the determination expansion word set In satisfaction degree of each expansion word to pre-set business target, including:
According to pre-configured expansion word analysis model, each extension in the expansion word set is respectively obtained Satisfaction degree of the word to the pre-set business target;Wherein, the expansion word analysis model is according to history Search daily record is trained and obtains.
4. method according to claim 3, it is characterised in that the expansion word analysis model is root According to extracting from the historical search daily record by historical query keyword feature and history expansion word feature structure Into feature group, and each feature group is trained to the history satisfaction degree of the pre-set business target Obtain;
Wherein, the historical query keyword feature is crucial with the historical query in the historical search daily record Word is related, and the history expansion word feature is related to the history expansion word in the historical search daily record.
5. method according to claim 4, it is characterised in that the historical query keyword feature It is characterized in that according to pre-configured feature platform table from the historical search daily record with the history expansion word With obtaining;
Wherein, in the feature platform table record have it is pre-configured to the historical query keyword feature and The characterization information of the history expansion word feature.
6. method according to claim 4, it is characterised in that each historical query key word correspondence Historical query keyword feature include the first foundation feature set being made up of at least one of:
Keyword that the historical query key word, the historical query key word are included, the history are looked into Ask the preset attribute of key word.
7. method according to claim 4, it is characterised in that history expansion word is corresponding goes through for each History expansion word feature includes the second foundation characteristic collection being made up of at least one of:
Keyword that the history expansion word, the history expansion word are included, the history expansion word it is pre- If attribute.
8. method according to claim 7, it is characterised in that history expansion word is corresponding goes through for each History expansion word feature also includes the advanced features collection being made up of at least one of:
The history expansion word represents situation statistical value, the history expansion word in Preset Time window Click situation statistical value in Preset Time window.
9. method according to claim 3, it is characterised in that the expansion word analysis model is logical Cross and the feature group is trained based on the RankSVM algorithms of study pairwise-learning in pairs Arrive.
10. method according to claim 1, it is characterised in that also include:
The expansion word do not paid close attention to by user in screening out the expansion word set.
11. methods according to claim 1, it is characterised in that also include:
The expansion of default degree of association is less than in screening out the expansion word set with the degree of association of the searching keyword Exhibition word.
12. methods according to claim 1, it is characterised in that the pre-set business target and industry Business scene is related, and the business scenario includes at least one of:
Information retrieval scene, sale scene, advertisement bidding scene.
13. methods according to claim 12, it is characterised in that
When the business scenario is information retrieval scene, the pre-set business target is at least one of: Rate, click volume are adopted in clicking rate, search;
When the business scenario is to sell scene, the pre-set business target is at least one of:Under Single rate, the amount of placing an order, sales volume;
When the business scenario is advertisement bidding scene, exhibition of the pre-set business target for advertising unit Revenue when showing that number of times reaches preset times.
What a kind of 14. inquiries were rewritten realizes device, it is characterised in that include:
Acquiring unit, obtains the expansion word set corresponding with the searching keyword of user input;
Determining unit, determines satisfaction of each expansion word in the expansion word set to pre-set business target Degree;
Sequencing unit, is ranked up to the expansion word in the expansion word set according to the satisfaction degree;
Unit is chosen, the expansion word of the first predetermined number of arrangement is chosen, to inquire about crucial as with described The corresponding expansion word result of word.
15. devices according to claim 14, it is characterised in that the acquiring unit is by following At least one of mode, obtains the expansion word set:
According to predefined one or more inquiry rewriting algorithms, the searching keyword of user input is carried out Expand word to process, obtain the expansion word set corresponding with the searching keyword of user input;
Reception is processed and derived expansion-word set to the searching keyword of user input by third-party application Close;And
Receive the expansion word set corresponding with the searching keyword of user input directly by outside input.
16. devices according to claim 14, it is characterised in that the determining unit specifically for:
According to pre-configured expansion word analysis model, each extension in the expansion word set is respectively obtained Satisfaction degree of the word to the pre-set business target;Wherein, the expansion word analysis model is according to history Search daily record is trained and obtains.
17. devices according to claim 16, it is characterised in that the expansion word analysis model is According to extracting from the historical search daily record by historical query keyword feature and history expansion word feature The feature group of composition, and each feature group instructed to the history satisfaction degree of the pre-set business target Get;
Wherein, the historical query keyword feature is crucial with the historical query in the historical search daily record Word is related, and the history expansion word feature is related to the history expansion word in the historical search daily record.
18. devices according to claim 17, it is characterised in that the historical query key word is special The history expansion word of seeking peace is characterized in that according to pre-configured feature platform table from the historical search daily record Matching is obtained;
Wherein, in the feature platform table record have it is pre-configured to the historical query keyword feature and The characterization information of the history expansion word feature.
19. devices according to claim 17, it is characterised in that each historical query key word pair The historical query keyword feature answered includes the first foundation feature set being made up of at least one of:
Keyword that the historical query key word, the historical query key word are included, the history are looked into Ask the preset attribute of key word.
20. devices according to claim 17, it is characterised in that each history expansion word is corresponding History expansion word feature includes the second foundation characteristic collection being made up of at least one of:
Keyword that the history expansion word, the history expansion word are included, the history expansion word it is pre- If attribute.
21. devices according to claim 20, it is characterised in that each history expansion word is corresponding History expansion word feature also includes the advanced features collection being made up of at least one of:
The history expansion word represents situation statistical value, the history expansion word in Preset Time window Click situation statistical value in Preset Time window.
22. devices according to claim 16, it is characterised in that the expansion word analysis model is By being trained to the feature group based on the RankSVM algorithms of study pairwise-learning in pairs Obtain.
23. devices according to claim 14, it is characterised in that also include:
First screens out unit, the expansion word do not paid close attention to by user in screening out the expansion word set.
24. devices according to claim 14, it is characterised in that also include:
Second screens out unit, screens out in the expansion word set and is less than with the degree of association of the searching keyword The expansion word of default degree of association.
25. devices according to claim 14, it is characterised in that the pre-set business target and industry Business scene is related, and the business scenario includes at least one of:
Information retrieval scene, sale scene, advertisement bidding scene.
26. devices according to claim 25, it is characterised in that
When the business scenario is information retrieval scene, the pre-set business target is at least one of: Rate, click volume are adopted in clicking rate, search;
When the business scenario is to sell scene, the pre-set business target is at least one of:Under Single rate, the amount of placing an order, sales volume;
When the business scenario is advertisement bidding scene, exhibition of the pre-set business target for advertising unit Revenue when showing that number of times reaches preset times.
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108021641A (en) * 2017-11-29 2018-05-11 有米科技股份有限公司 The method and apparatus that the association keyword of application is expanded
CN109003146A (en) * 2018-08-31 2018-12-14 百度在线网络技术(北京)有限公司 Business datum promotion method, device, terminal and computer readable storage medium
CN109117475A (en) * 2018-07-02 2019-01-01 武汉斗鱼网络科技有限公司 A kind of method and relevant device of text rewriting
CN109657145A (en) * 2018-12-20 2019-04-19 拉扎斯网络科技(上海)有限公司 Trade company's searching method and device, electronic equipment and computer readable storage medium
CN109857845A (en) * 2019-01-03 2019-06-07 北京奇艺世纪科技有限公司 Model training and data retrieval method, device, terminal and computer readable storage medium
CN110110207A (en) * 2018-01-18 2019-08-09 北京搜狗科技发展有限公司 A kind of information recommendation method, device and electronic equipment
CN110909217A (en) * 2018-09-12 2020-03-24 北京奇虎科技有限公司 Method and device for realizing search, electronic equipment and storage medium
CN110968759A (en) * 2018-09-30 2020-04-07 北京奇虎科技有限公司 Method and device for training rewriting model
CN111428119A (en) * 2020-02-18 2020-07-17 北京三快在线科技有限公司 Query rewriting method and device and electronic equipment
CN112052303A (en) * 2019-06-06 2020-12-08 阿里巴巴集团控股有限公司 Keyword weight determination method and device and computing equipment
CN112256953A (en) * 2019-07-22 2021-01-22 腾讯科技(深圳)有限公司 Query rewriting method and device, computer equipment and storage medium
WO2021136009A1 (en) * 2019-12-31 2021-07-08 阿里巴巴集团控股有限公司 Search information processing method and apparatus, and electronic device

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020095405A1 (en) * 2001-01-18 2002-07-18 Hitachi America, Ltd. View definition with mask for cell-level data access control
CN1954321A (en) * 2004-03-31 2007-04-25 Google公司 Query rewriting with entity detection
US20080059439A1 (en) * 2006-08-30 2008-03-06 Lucent Technologies Inc. Query Translation from XPath to SQL in the Presence of Recursive DTDs
CN102682001A (en) * 2011-03-09 2012-09-19 阿里巴巴集团控股有限公司 Method and device for determining suggest word
CN103136224A (en) * 2011-11-24 2013-06-05 百度时代网络技术(北京)有限公司 Recommendation method and device for keywords
CN103365904A (en) * 2012-04-05 2013-10-23 阿里巴巴集团控股有限公司 Advertising information searching method and system
CN104252456A (en) * 2013-06-25 2014-12-31 阿里巴巴集团控股有限公司 Method, device and system for weight estimation
CN104636334A (en) * 2013-11-06 2015-05-20 阿里巴巴集团控股有限公司 Keyword recommending method and device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020095405A1 (en) * 2001-01-18 2002-07-18 Hitachi America, Ltd. View definition with mask for cell-level data access control
CN1954321A (en) * 2004-03-31 2007-04-25 Google公司 Query rewriting with entity detection
US20080059439A1 (en) * 2006-08-30 2008-03-06 Lucent Technologies Inc. Query Translation from XPath to SQL in the Presence of Recursive DTDs
CN102682001A (en) * 2011-03-09 2012-09-19 阿里巴巴集团控股有限公司 Method and device for determining suggest word
CN103136224A (en) * 2011-11-24 2013-06-05 百度时代网络技术(北京)有限公司 Recommendation method and device for keywords
CN103365904A (en) * 2012-04-05 2013-10-23 阿里巴巴集团控股有限公司 Advertising information searching method and system
CN104252456A (en) * 2013-06-25 2014-12-31 阿里巴巴集团控股有限公司 Method, device and system for weight estimation
CN104636334A (en) * 2013-11-06 2015-05-20 阿里巴巴集团控股有限公司 Keyword recommending method and device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王秉卿等: ""机器学习的查询扩展在博客检索中的应用"", 《中文信息学报》 *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108021641A (en) * 2017-11-29 2018-05-11 有米科技股份有限公司 The method and apparatus that the association keyword of application is expanded
CN108021641B (en) * 2017-11-29 2019-07-19 有米科技股份有限公司 The method and apparatus that the association keyword of application is expanded
CN110110207A (en) * 2018-01-18 2019-08-09 北京搜狗科技发展有限公司 A kind of information recommendation method, device and electronic equipment
CN110110207B (en) * 2018-01-18 2023-11-03 北京搜狗科技发展有限公司 Information recommendation method and device and electronic equipment
CN109117475B (en) * 2018-07-02 2022-08-16 武汉斗鱼网络科技有限公司 Text rewriting method and related equipment
CN109117475A (en) * 2018-07-02 2019-01-01 武汉斗鱼网络科技有限公司 A kind of method and relevant device of text rewriting
CN109003146A (en) * 2018-08-31 2018-12-14 百度在线网络技术(北京)有限公司 Business datum promotion method, device, terminal and computer readable storage medium
CN110909217A (en) * 2018-09-12 2020-03-24 北京奇虎科技有限公司 Method and device for realizing search, electronic equipment and storage medium
CN110968759A (en) * 2018-09-30 2020-04-07 北京奇虎科技有限公司 Method and device for training rewriting model
CN109657145A (en) * 2018-12-20 2019-04-19 拉扎斯网络科技(上海)有限公司 Trade company's searching method and device, electronic equipment and computer readable storage medium
CN109857845A (en) * 2019-01-03 2019-06-07 北京奇艺世纪科技有限公司 Model training and data retrieval method, device, terminal and computer readable storage medium
CN109857845B (en) * 2019-01-03 2021-06-22 北京奇艺世纪科技有限公司 Model training and data retrieval method, device, terminal and computer-readable storage medium
CN112052303A (en) * 2019-06-06 2020-12-08 阿里巴巴集团控股有限公司 Keyword weight determination method and device and computing equipment
CN112256953A (en) * 2019-07-22 2021-01-22 腾讯科技(深圳)有限公司 Query rewriting method and device, computer equipment and storage medium
CN112256953B (en) * 2019-07-22 2023-11-14 腾讯科技(深圳)有限公司 Query rewrite method, query rewrite apparatus, computer device, and storage medium
WO2021136009A1 (en) * 2019-12-31 2021-07-08 阿里巴巴集团控股有限公司 Search information processing method and apparatus, and electronic device
CN111428119A (en) * 2020-02-18 2020-07-17 北京三快在线科技有限公司 Query rewriting method and device and electronic equipment

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