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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
' D, R# r# N8 x; _) uto do-business # ?7 b# ^4 @  W% B& t' P  O! Q/ _
rt random 360
& G1 o# J( I# [ fd 1
% R. P4 f: w! D4 g: m4 g ifelse(other turtles-here != nobody)[* O1 G$ m! G; b, E
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
0 }  ]: S9 }  C' V$ T5 Q- ]   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * d* N# V3 ^0 G! Z. p) ?7 g( N
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! U- _  D/ T. G7 M3 H" T5 I
   set [trade-record-one-len] of self length [trade-record-one] of self
0 ]9 w3 _  x& B8 ~+ a5 @   set trade-record-current( list (timer) (random money-upper-limit))+ l% l4 ~9 \; J/ b5 Y$ t. T- A

9 z7 c5 }( u7 Q% \% u8 n; c问题的提示如下:5 l0 z8 w/ r0 C6 A6 V

1 g1 p+ U/ }  ]- o# Rerror while turtle 50 running OF in procedure DO-BUSINESS6 U2 k) p: ^+ M2 \3 H
  called by procedure GO4 ^0 g1 E; p! w4 d7 A
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 U$ w4 L+ d3 O2 L1 z
(halted running of go)6 G9 {8 @# ^! {: Z: J( z
& w4 j' [0 M9 `( N8 K' ?" I4 U
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~5 b# J( w" U8 k4 X. a: C
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教6 v" X' H+ N0 V4 y2 X. c, l5 I" }* T
globals[
9 A) q* G4 g0 S  ?xmax. h7 o1 {* m  r8 j$ F- L
ymax
) o7 G/ L; l7 Oglobal-reputation-list
& Z8 {4 ]8 A6 j+ G2 J# D, W, v! L! o
;;
每一个turtle的全局声誉都存在此LIST
$ Q9 e  G' x+ P) K) Gcredibility-list
7 h% N: b' o: b/ s, j;;
每一个turtle的评价可信度. g% }' [2 z. M# T$ `- z. o
honest-service
7 z9 A6 D9 E* J0 Zunhonest-service9 o$ _' `/ l( {: m
oscillation' O" E/ T) C/ X' F& L1 @
rand-dynamic
( K: z4 [8 n' T]+ I4 x* V9 c8 T' H6 f! q* x

# L: x! v% v  @turtles-own[
. n( I& _5 _$ b1 Dtrade-record-all# ~+ m8 r0 u4 z# I" [4 \# h
;;a list of lists,
trade-record-one组成
% w4 g. R" I" |+ N% f& M' Qtrade-record-one
( }; T( M- u4 c+ h. k5 Z- u# G;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
9 x3 c* y# y0 l6 N8 k: `5 y
; y6 W9 L, ]' K( v3 q9 Y;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]( O$ `) C$ @. C. p& u8 q: s+ l
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]2 `* o& T# F* K6 B% u5 @) g/ n$ x( B! k
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list* w+ b8 i* {; P
neighbor-total
; f/ |& a* U$ l: ~* \;;
记录该turtle的邻居节点的数目
" X4 t8 Y+ P$ \# o" xtrade-time
+ E( N( a0 K' n* z8 R;;
当前发生交易的turtle的交易时间
% D: O7 ]4 O- C) jappraise-give
, q- }+ v- ?5 q- C$ u, e0 y7 [5 I;;
当前发生交易时给出的评价# c$ H  V) g$ }, T( p
appraise-receive5 e/ B) \, }9 W+ S) r! w! m
;;
当前发生交易时收到的评价3 G# N8 y" v7 m
appraise-time# Q/ x' q# i# J0 D5 E, J0 e
;;
当前发生交易时的评价时间& e1 K$ L+ s; ?  R- c
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 ]. `7 V" W/ i# {% F# m# etrade-times-total
) H7 c* Q8 a: p;;
与当前turtle的交易总次数6 `" y" b5 \' a8 B5 V9 r. R
trade-money-total
" w; a* j. k/ L;;
与当前turtle的交易总金额
6 x. B5 Y  B4 d/ Z) ^7 N' ?local-reputation
. L% r5 e% a& {9 k  ^global-reputation  n. b9 u3 C3 E: e
credibility
$ `1 R- f1 T2 w& @, s;;
评价可信度,每次交易后都需要更新
- V+ O/ M4 J0 G- ocredibility-all
, }- m1 E0 y" _6 R% K3 S2 N;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据; k2 \2 U0 z# e( P7 U+ `$ h- A/ [

) b! i7 a/ e* P8 O* ^! z$ |;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5# E& K0 n# x, T) D# b& j/ w
credibility-one) P3 D# ]- H( X0 h% B
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
( m2 l. r) `0 c( Lglobal-proportion' h6 l6 r4 W8 X% i6 ~- W; C
customer5 e6 O$ ?1 ~; F4 d* {. x. C; [' x
customer-no
5 U0 r, j2 E: v( x$ otrust-ok# e, `! y; A$ ]1 q4 K. Y" {
trade-record-one-len;;trade-record-one的长度  n3 m2 W0 B) B2 y& ~
]
3 j3 h5 S& a  i2 }! a3 {: {
: y1 ?5 i) B" d, j4 {2 H( C;;setup procedure2 b+ d7 o/ Y. G4 N
! K! s6 X7 L3 o+ e. y' d
to setup" [/ w' Z* u/ z1 m2 L3 U5 W# V. Y

: ^) Y$ ?4 D2 `: @- k  C8 I$ ^- r/ Mca
9 @- E7 t. P( @3 B- x

$ J5 d% g# x9 F2 D% Finitialize-settings
! N5 z( }3 P. `% j

+ Q7 n& u' T& Wcrt people [setup-turtles]

$ L9 {, g$ k* k% {7 `  s9 l7 o. [5 h* J$ l: C5 s& q& T
reset-timer
0 {4 }! t8 B* @. }' h
( A6 a+ n! w- _
poll-class

' d' s6 q) m* X5 b5 G! p
& ^' ^* R( n0 Ksetup-plots
# f& l  }+ S4 G* F' L

6 K9 @, @: [, ~5 v9 ido-plots
! ~8 V5 S9 K; J. \9 n4 G
end
2 ?- h6 ?) A, e" l3 b: ^3 h3 V+ P% {1 l4 e1 k
to initialize-settings/ c9 c; x3 o% \! i, Y7 [0 \
, e8 q+ C; P0 ]
set global-reputation-list []

' u* }1 K  V7 I* _2 o8 L* ?' F" X6 ?
3 B/ [) c# ?6 `2 H9 W, z/ oset credibility-list n-values people [0.5]
  Q! _$ _  n- A' D: f8 U. F

& T2 m  L, X. {* Q) E" t3 J- F9 }set honest-service 0
" N) F; T$ c* r5 Z5 ~
7 b0 O/ P+ I' \2 [
set unhonest-service 0
4 V1 f" {8 t* b. L7 V1 b: z

+ W  s' j0 R" I6 Vset oscillation 0

0 v% M- T$ B+ f# ]# I$ J8 y8 z. Y; y
* i# f% q% B5 u) D$ @) Zset rand-dynamic 0
/ ^) w3 [! I5 c1 c; j! W/ \
end
( m* B  w. R3 ^* j+ r  k+ _
5 s6 P1 M; R% L( i: v, {, Ato setup-turtles
6 P& H6 |! t4 H2 {5 rset shape "person"
3 ]5 z0 I7 w3 @$ r, xsetxy random-xcor random-ycor
' c: S6 d0 \. x  T4 N1 bset trade-record-one []
' \( ~2 P0 U) E- K$ ?1 J' S5 X
' E) b# {$ F) g  a) j+ D9 b6 z
set trade-record-all n-values people [(list (? + 1) 0 0)]
% b  I- H  c* L: r7 G" K: f! O; W
+ x# G4 q0 a+ `% S, H4 ^) M
set trade-record-current []
% m# [. z( D6 Z5 z1 R: J  iset credibility-receive []6 V4 g# g) d9 N5 K) ~1 W) l4 h/ d
set local-reputation 0.5
  `! e1 j7 Y: ?. A! W! I0 d; ^set neighbor-total 0
$ Z, L& C7 d" f9 M$ Z+ Gset trade-times-total 0! r: M: }( ]4 I- [
set trade-money-total 0/ o$ P% {5 z$ Y. v, p$ J" r+ e
set customer nobody
: r' S1 @+ o& W0 F, \# U, x; T5 w& Lset credibility-all n-values people [creat-credibility]
5 n6 S/ h# x, O  F% [; \8 }( Dset credibility n-values people [-1]
# u! `  V% D# B: l# H7 Gget-color
- l7 \- u: R% u- B& D4 N
- ~" @8 p2 l  [7 w8 \
end( H' _: Z# H' ^1 n' U9 ~5 x% F

1 t7 C! X/ t" c+ r, u3 Sto-report creat-credibility
2 h( P6 Z) @( l; G3 F0 _6 Hreport n-values people [0.5]# ^$ {4 A/ d, K( V# {. t. q
end
" @% L, A! X" b: o1 c2 Y" R+ O- i; o% ~7 S" P2 V+ J2 A* Y+ R
to setup-plots
6 M7 I* Q- j7 o( z; e# W2 X2 T& f% Q: X- y" N3 y$ h4 z& L& O; P; e
set xmax 30

+ C) P: s, u$ Y* ^; B3 ?) J9 u: w
  G  a: U- N4 ]" }& yset ymax 1.0
- [% q; x4 E# A' o$ v/ N. m6 p

, {* E0 A! ]; m: Z- V2 Dclear-all-plots
$ i; K/ @! g( U6 p! l5 t  |, w
' D! J% m7 @* Q# }4 r) H
setup-plot1

+ b* Y3 n( y5 V
+ o; N5 t; f' K6 g1 Q! Rsetup-plot2
3 W: m. g' X/ T! A3 V5 ]) T9 e
: J9 E/ Z0 Y) |
setup-plot3

1 y% x0 @. r$ s3 [- Q, ?1 Xend- R$ M/ j. z; a2 Y' C& j

3 F; n# u5 d# a* P# m7 M* j0 V. i% U;;run time procedures
/ {1 W- F9 o! H4 i* e
# ]5 S2 \; ?4 |to go3 Q9 ]0 j5 y: ]. y
* [$ r/ ]9 k3 l6 |" t4 k4 b' L
ask turtles [do-business]

' G' a/ z# D7 ?: \( yend
. B+ q$ y6 p% f5 E8 `! Q/ T5 _( `9 j- s8 {
to do-business
) H5 V- M5 Y2 M4 z) |

# p8 s& }3 Z3 A, v4 p8 {5 T6 M3 u8 p" M6 F+ H5 L( A4 @
rt random 360

* ]0 c& ~" ~: U( X* v4 M* g6 c
( w" C" o. c7 S6 Dfd 1
' B+ Q9 X$ ~' n& _* L. p9 D
$ _6 Y( u5 \' s+ k) s; t% ?
ifelse(other turtles-here != nobody)[
, V* h, K' y; R9 ?
8 o6 |$ N) ?- W- ?0 ], F6 X
set customer one-of other turtles-here

) T+ U# c9 ~% \! ?( ?' k7 J- S9 `1 v1 T+ b- F: y
;; set [customer] of customer myself
2 {5 t7 ^# X; ?6 B/ M

  R. K+ r/ _+ j; S( {- Q. Gset [trade-record-one] of self item (([who] of customer) - 1)! h; ~; e5 Q# u9 o, _. `
[trade-record-all]of self
8 k7 P/ J3 ~. a9 e: e  n" g;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- I: a& ^# ?: j) y. G" k, Y" ]: d' X; M  B' q) y( }! r% ?
set [trade-record-one] of customer item (([who] of self) - 1)
4 v6 h+ u. T0 k[trade-record-all]of customer

' i& P( ?3 a5 W) j! _  ~: h! L! a8 M2 s7 G* B1 I
set [trade-record-one-len] of self length [trade-record-one] of self
* A; H6 k! [  H
/ e! q: Q0 ]. I! P' G; Y, a! s
set trade-record-current( list (timer) (random money-upper-limit))
' D+ G! d! f4 @" h3 `$ g; A; E4 I
- t1 f* t- {4 M7 {4 O4 C9 G
ask self [do-trust]
! ^. G* ~! O1 k7 h3 e; w9 g/ K8 g;;
先求ij的信任度' b. o) f4 ]  g! Y! R* s& u

; J: u" H9 H- j- B+ |# ?if ([trust-ok] of self)
& z1 H  K6 U/ f;;
根据ij的信任度来决定是否与j进行交易[: @( F! _, a) a/ A4 ?* }8 N* L
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself2 f) q2 K  `( E0 o# l# }" T4 n7 W

4 n( [  z: K2 I) w8 ^* y6 z[

/ Q( y- w: I7 `1 \* u# B# Y3 _1 `" D4 e% z
do-trade

7 O% w6 m  K7 M8 v  j2 G
! F$ I6 T/ }7 _) R$ bupdate-credibility-ijl
/ ^+ E; D* f% ?' v

: m/ P, p7 w! ]2 Q  w5 bupdate-credibility-list7 C) X, }( N) o/ J2 T
! x# x+ C1 ~* q% n$ u2 |
/ J! q& K( E% U) Q: U
update-global-reputation-list

/ L3 c$ v7 v; N: i  d* l2 C9 j+ ^
/ Z3 [, l3 m& l+ V1 Bpoll-class
$ [8 m% O" y" G9 J0 C" [7 L: x

+ {0 }  w0 r- z' [2 W% Zget-color

0 \# a3 L0 |5 B: U9 o) |; f$ e" M# N
, G: ^, ?$ P7 ~7 h' ~9 f' L]]' |7 ^0 H6 o' _* N% \( f

) b* v+ B. w) A% E;;
如果所得的信任度满足条件,则进行交易
( J  k$ ^1 }' s! z' v/ v- R# s  w. i
[
9 K# \! s& K8 p' o, k3 Q  v( b7 G

; A3 i9 b" @/ T! F0 {$ c  @# ?rt random 360

$ I: Y- f; t; o3 t  Q% N: p
2 l% F# @  M+ C; S3 A& B" ifd 1
- D9 a2 N) U" g( I, e4 q) o+ I3 `
# e, {( |6 K# y. m9 h, i- s) M; U
]
; z$ h) ]8 Y3 |& I8 z, l
* s7 |8 |) t$ p' ]# J$ k3 H  E7 z
end
+ W7 _8 ]1 I9 J" P
1 n$ H- t; @7 u9 d
to do-trust
- A& g: C  {  J$ E6 S5 Cset trust-ok False# J& Q% H5 Y. |9 L, ]7 ]! [( o4 H3 f
3 o+ p* M5 A% K4 f" u$ S: R
8 ]% R: |4 x, E
let max-trade-times 0- r1 T/ P; \" H# Q" j3 M  m; w$ B
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 [: @9 V' K* ]7 d; e# B4 K% s8 A- Olet max-trade-money 0
- g: Z" l- R1 N* t$ fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 X$ \9 S# [) H7 W' h
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& H5 M' V/ H0 j; `1 |  D
: P/ s+ Y* n. e
/ B4 i( Y7 z2 S
get-global-proportion/ D! a3 s! P" [" L8 r" ~! ?
let trust-value
( B. C) H' R$ g4 \+ g; [4 D2 \local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

3 r, d0 w; I. H- zif(trust-value > trade-trust-value)
( _# S+ g' y4 k0 E! m! H[set trust-ok true]; Y$ L& g2 l, p; e8 u% a  d& `# |
end! C8 v  k2 A+ _& `; C/ x5 p0 e

! }! w" R& C% W* [! A! n0 Eto get-global-proportion; y& {9 T1 ?( M; l2 k
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)# z- X; [8 s6 ]) m  t$ \) X
[set global-proportion 0]
5 K" w6 d4 \. W! `; c" z- x; E[let i 0! [, K3 b/ L! \% Y' Z7 T
let sum-money 0
6 F1 f! ?8 L% d8 D2 h, ^: H1 dwhile[ i < people]
- J  e- [* `/ F0 H[6 Y8 k( Z/ y% V) X- k; j: g0 h
if( length (item i" N- Y/ B) u; X' n4 ~9 u* Y
[trade-record-all] of customer) > 3 )

; Q1 J: E7 a; W( F' j9 B! u  o* v3 A[: o7 |6 W: k( b" Y3 `  ^5 f
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& e/ |. t: j' m1 \' |2 |9 X' _]
& l7 u' g. K  i. O: d]& V6 M# Z; g4 X9 R
let j 0
4 A% d3 A9 Z4 Y0 T2 S5 @3 Rlet note 0
, Y2 o2 D$ h% ]3 M/ _while[ j < people]( A. u, k9 ]5 B: I1 e4 ?5 P
[& ?* @4 Z. e( o$ M% [  V5 Z- U: `  u. O: w
if( length (item i/ L- ?4 r6 P# W6 u/ j$ h
[trade-record-all] of customer) > 3 )
9 S* X# J: s& u5 e: \9 ~( Q
[7 E: @" d) {/ g9 s
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- \3 o" S" M  S- Y" Y% W" F) t[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
/ c% J# X, q" y* `. d% ^[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 q" L$ ?; {; L5 ?6 [7 O- N/ H( D( B
]4 {9 k* H/ I1 V/ f( v
]0 U+ F% X5 G' G; z: u
set global-proportion note& U. {( G5 U2 ~+ G$ j' c. \
]  q% ~" p$ q$ x+ t* _+ [) X! ]0 d
end0 I- V0 V" f# ^

& {9 D+ k- Y2 U" C$ Cto do-trade! G% v# \# j1 M, A9 S3 t
;;
这个过程实际上是给双方作出评价的过程
' _, K* a5 F- [3 iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! @! a8 T" ~$ X6 Z2 sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价+ c2 W* ~2 Z" u+ o- Y: i
set trade-record-current lput(timer) trade-record-current0 q' Y3 I" l- Z4 Z( D
;;
评价时间( G+ b& c! b1 _  ^/ ~6 V
ask myself [( ?+ B5 K2 x# e
update-local-reputation* B* _) c6 y9 r; q; c2 Q9 f
set trade-record-current lput([local-reputation] of myself) trade-record-current8 \  @4 G  {( B0 l& ]+ X/ }( P
]# ]& [, {# ~9 Z0 C5 p
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself  J0 ?4 F$ c9 w% _6 P
;;
将此次交易的记录加入到trade-record-one5 j2 ?3 y# g3 |0 [% J
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 _9 u7 u- h) A9 X* M
let note (item 2 trade-record-current )
5 F/ t% X, `% u& x" Iset trade-record-current4 e4 B3 ]) L* B. S' y* j* t
(replace-item 2 trade-record-current (item 3 trade-record-current))
( u4 T% f/ M2 r
set trade-record-current" x6 f  i+ m' F8 A  l5 {: a2 S
(replace-item 3 trade-record-current note)1 W3 w% `. V1 J1 p6 W# }
) t- D4 k4 z, z! l4 g2 p$ \8 ^
6 n; t1 {9 P6 w! ^" V4 j, ~4 }
ask customer [! W) z# O( v- p- N0 C- _2 a- \& k
update-local-reputation6 U5 |, s4 E. g: _' f
set trade-record-current
$ t; L( o% y+ L(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 |) P$ Y- _0 r$ e
], r6 A) v6 m5 E, q) `1 o

6 d0 f$ r( Q0 y: m* z% z4 ^/ a

# m8 ]( D- I. p4 z& tset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% b. S$ ~$ O) |1 Q* {1 }6 F  H
7 n# P! J) v$ s: E& P
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( ?8 i: S) h8 A, n/ H, q;;
将此次交易的记录加入到customertrade-record-all
/ ^# f! g6 J7 k3 ?8 b2 Pend; Q7 q' K; j0 |1 f
! p' |  ]& J+ Y6 {0 z/ ]
to update-local-reputation* I2 I; n, T) H$ T. c, }/ U
set [trade-record-one-len] of myself length [trade-record-one] of myself
& Q" r* |* i" E! B' ~/ x# S5 |9 o' x$ h0 i# v; y4 [

2 Y* W& y9 J. H% {2 q8 L;;if [trade-record-one-len] of myself > 3

" j& ~: w& G1 R+ mupdate-neighbor-total0 p/ n! w, s3 B4 D: t6 \
;;
更新邻居节点的数目,在此进行+ A3 \6 w3 }1 @$ y7 `7 p
let i 3
5 X9 H- w9 n" O4 D- }- Y4 ^, t  klet sum-time 0
8 D! Z4 K$ m$ w4 \8 _6 N4 Pwhile[i < [trade-record-one-len] of myself]8 u6 o3 u& T% S/ n& \! o
[
0 c7 p# Y  e. O, Pset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
' D; h4 c/ U) qset i0 C4 X3 |" p2 R' S" P9 |, g
( i + 1)
" W- _" ?* M; e
]* a+ F- A' @, T4 @8 m- w; n" h' N
let j 3
6 n9 \7 T& c, \. T3 X# Q2 e: Z5 r0 {let sum-money 0
. @+ T1 ?- M* j; Hwhile[j < [trade-record-one-len] of myself]# P6 }/ Y2 x- w/ T) U3 _
[
. k5 G5 Z2 w, {set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
% N# m4 p9 W3 X& @set j  i& f2 f. k2 x4 S. a- E7 q
( j + 1)
- E7 J5 q# h4 N) p& l! J4 p
]4 ~* v" D# u, Z) ^, w3 Z
let k 3- s# N. g, B  w3 b
let power 0
$ x1 v* E2 S  w( M8 hlet local 0
  n. s: K) i/ m4 J: o& F6 {while [k <[trade-record-one-len] of myself]) x6 l. d2 x0 x. E& |- |+ Y
[. O9 S& @* \2 I& `2 ]0 z
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
6 W' e! P: y$ W/ Z$ |2 H) q  f2 Sset k (k + 1)
# j1 j; u8 k9 S) l* S; c$ b]3 u* [  C& y8 G% i( ]1 f. `, R
set [local-reputation] of myself (local)
2 [1 x6 t  u  B5 m( r. q8 `end
6 {6 e" m8 n7 t9 {
8 y3 {6 A% R% A, E0 M1 |! hto update-neighbor-total
6 F. a1 S4 C* X! ^, M! s
) G6 Y4 C$ E. g  A6 `! Z( p  Q; }if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 m& v- Z& J( p: k# ^3 Q

7 X+ j0 j; e6 @: o+ g1 `; l0 d/ _. N
% l! G5 G  A+ z% D' f3 Y
end
& u" }* z  S6 f4 J! P1 y3 ?; ^. N* U2 N& q! O
to update-credibility-ijl ! B* y- W6 H: t1 _! x+ w: A# z$ z

# }1 U5 `- X# K;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。: l3 p0 o. S( b5 w% L  Z2 T8 j* X) K
let l 01 l: I; Q: A1 f
while[ l < people ]$ \1 S" W, z. \4 K; {/ |! ?* Y9 G
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
+ C* P0 j% W! _+ S/ A0 S[
) i  q4 c( Y7 f; ~8 F+ Olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 q0 y, M* H. ?: \3 H# a% y3 ~7 t
if (trade-record-one-j-l-len > 3)
  ]* z0 Q$ u6 W0 f/ B[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one5 `" z: s9 [) v0 w
let i 3
0 `7 f- {: a9 C1 g& h$ {! `+ V9 b* xlet sum-time 0) Q4 k. u+ A& M/ ~( h
while[i < trade-record-one-len]
- q* e2 u/ w0 L- y3 x! N: r2 H- g[) ^' J8 e/ D: g1 A% I
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
2 B" o& \& k6 L/ T; c* zset i: x' P1 U% r  U' P4 z) Q$ D
( i + 1)
1 J+ d" Z% s! A& R2 X
]
7 L$ a6 I! y* y- Plet credibility-i-j-l 03 F; K4 K. p' u( m$ a# h1 Z- w
;;i
评价(jjl的评价)9 @  }5 _/ ?2 t4 B2 Z
let j 3
! _3 d) |3 t/ u# Wlet k 4
9 d% m! m; A6 j$ u. `0 q$ rwhile[j < trade-record-one-len]
1 C" [) N1 W2 s[
5 I% a% G3 H9 O+ fwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
% C: s/ |1 d7 l- ~8 vset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
0 [$ I. C* \" \4 H' Bset j
; g$ Y9 T" h8 `; y/ Y1 n! w( j + 1)
8 {! r# o5 p* b+ Y# l/ H# _
]
6 K6 i6 s6 W" I9 v# l4 `set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l )). b& j- I+ |6 O9 n7 S5 Z4 Y4 ^

  B- m1 b3 [0 {* f
; m* N% G- K- e4 c
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
- N8 X" g6 r/ S; \& O1 m;;
及时更新il的评价质量的评价! X* [  w- V/ Y* T2 I7 N& G) k. @1 F( c& z
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 P1 \/ m4 |. u$ Q. f6 r, h7 N5 R# aset l (l + 1)4 m* _+ ^) h$ D$ X, N7 u
]
8 W, N: l: v$ E" jend6 [0 [7 [3 q/ S

$ z) p% N! n  W0 H# A" Qto update-credibility-list) ^+ U& ~  T5 `+ Q8 x* p5 s
let i 0
6 c; _! o! E& Awhile[i < people]
& [6 C6 B1 j% |$ }: N$ ]7 N[
% l9 R; ?8 C5 l: `  O0 G( d  b' elet j 0
/ k* b- b6 G" o1 blet note 01 i- v  R; N. Q1 A1 B$ G, ?" K
let k 0
2 `# e/ _2 Z+ ^3 Z$ n( x- a;;
计作出过评价的邻居节点的数目
3 V) M2 n' D2 c7 N0 Qwhile[j < people]( b! ~% O3 @: t' C( w
[  L% T0 W: H& S0 R
if (item j( [credibility] of turtle (i + 1)) != -1)% N# x, W( I& O1 m( c9 O
;;
判断是否给本turtle的评价质量做出过评价的节点. B, o9 Y1 B& I6 N5 F9 Q
[set note (note + item j ([credibility]of turtle (i + 1)))' e; v% n9 \! d$ a6 b# T4 {3 N3 c
;;*(exp (-(people - 2)))/(people - 2))]

7 y2 `0 T' v6 Y# \* t2 i- r* |set k (k + 1)
; P- }+ V, k  [7 t5 X, D]( X7 C/ W" n* Q( W1 c# |
set j (j + 1), m! |& ?  J$ G+ t9 q
]- D9 _- U! z: q2 a4 J
set note (note *(exp (- (1 / k)))/ k)- B7 ~7 Q% E6 O* e" _7 _
set credibility-list (replace-item i credibility-list note)
# E% C6 [; s0 v( Cset i (i + 1)
. B/ r  e; y! j7 n# ~! U8 R1 j]+ @* q& B2 K/ ]( D. X( w
end
3 ?4 B0 z# p6 p2 ~4 B8 E( W% Z9 B2 n) r
to update-global-reputation-list2 h3 A' d1 w. t1 }( T$ R9 r
let j 0& {+ p4 L3 |" k2 B- C
while[j < people]
3 f3 ~" Q' K, T[
- @6 v  p8 O1 w: [% Plet new 0
/ g, g) ]" O0 O9 z7 ]! i;;
暂存新的一个全局声誉/ B1 @8 I( ^( O9 j  o& T
let i 0
, ]( h2 \- z: m8 ]let sum-money 07 Q+ m* F& @: F+ {
let credibility-money 0
, N  C. L! A0 ~& B8 D. xwhile [i < people]3 s: A* h) i& _$ U3 _* x4 t7 B9 Z7 S
[) |+ k; o. K# K5 \( T* g: m
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))8 S3 o5 H6 y: e0 d
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- l7 K0 E1 S- I( O( R: f
set i (i + 1)
! ?$ t$ V  @( ^, P5 j0 s]
% o! S: V) \2 r. Q8 X8 ?9 h8 T+ Elet k 0
7 |% K3 h" W4 [0 ^8 u. M8 Plet new1 0
# f2 W9 x  X; ?) J' D" i2 l8 @, Awhile [k < people]+ v. I: m1 G4 P
[9 k% R/ t# a5 s  z# V$ F5 p
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
2 C- K1 D1 A+ j! g4 }: i; Xset k (k + 1)3 H; X+ {/ Q' o. e! j2 C
]
$ k1 \$ z' D+ i# X. e/ Kset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ d8 f% C" z9 z  s4 O
set global-reputation-list (replace-item j global-reputation-list new)
/ G# Z( q( c9 t: H5 a& ?set j (j + 1)
' G; j* d9 t# L4 E) f) ]. o( ~]: U) P+ r+ u0 i& b2 ]2 z, X9 P# c
end9 W0 N' T) |2 H  @( J. l4 ?
5 {5 j8 r, H+ S, r* x: e0 _' L
3 J+ J; h0 s+ }0 ]! ]7 F$ @" {

: c! j, ?# c$ R  I6 t. R) g& P) hto get-color2 n& a/ p0 w' Q# x

( l: c# F6 j4 i) u7 Y/ Sset color blue
4 p1 Q" k: M6 a4 d6 A5 b  e
end9 W+ j# C. j( ?! [3 t( _# m
2 v( N- F9 R2 g: @
to poll-class
: s; z6 k* {2 a" D& B+ p% Y. R' Vend! K8 s' v1 u* e( P; S
  H# Q3 i" D2 [, L0 q
to setup-plot1
0 d( V, ?+ W- y% l/ z
2 w+ S, Z" D9 M% \' v5 ~set-current-plot "Trends-of-Local-reputation"
# J* {- ]7 g9 A- ]4 o- _

7 Y. K; |/ V. [( [( ?, v4 l0 Wset-plot-x-range 0 xmax

% k$ a* o1 d; S. Q4 e/ `
' S9 G" y, S7 k- _2 u1 q* Hset-plot-y-range 0.0 ymax

- T! v- B( \. u5 A1 U# Z/ v4 v  bend! ]  V' Z: Q* ?0 P2 d: X/ n( @

+ P( z( D8 x7 }to setup-plot2, Z+ c0 z  H% w. w; E

% L# y' y1 `- v( o3 gset-current-plot "Trends-of-global-reputation"

. ]/ W) X& b$ x* j" E6 z) N7 `2 V9 Z) V& W0 l1 Z
set-plot-x-range 0 xmax

( z( A! O2 U7 k7 b, ^
8 S! C" _+ A$ K0 yset-plot-y-range 0.0 ymax

! R0 T8 U* S+ K; _5 s5 }! send
7 W/ l8 N' F2 M; @; K. s5 F/ x/ ?1 J& A8 r& b& V6 {4 z. M
to setup-plot3
% s3 }* x; f4 s6 K# a7 k7 m  ]6 x( o$ I& V- G$ A
set-current-plot "Trends-of-credibility"
0 }  M/ L' R8 m3 D+ K
1 s  n2 }) t; E$ h4 H
set-plot-x-range 0 xmax
' P" L/ u8 n: p) W( N: m
- y4 s5 _2 n% ~, y$ m( m
set-plot-y-range 0.0 ymax
+ I# q6 w; P8 t+ O) c  p
end' o6 _: D! x7 I1 r, e

% y% q# G; R) qto do-plots. o6 ~! _' p$ p5 k7 k3 m$ I" p
set-current-plot "Trends-of-Local-reputation"
: R% C6 W9 ~) t+ G2 h& u3 Vset-current-plot-pen "Honest service"2 `& y" r) x6 k( u/ t, o
end( |* _9 J! @- e8 i5 z
; [: C& T% Z& m! d
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
9 u$ h8 p! G1 x) F  a6 c, `7 @7 P0 e4 K
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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