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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:8 k( C! Y# c) G2 W' j$ k& @
to do-business . O& Q5 K' A5 c; E% g4 b
rt random 3602 t& {; j; F. ?& _) u8 b
fd 1
& @* k- f9 ^4 j3 l) z& }- e ifelse(other turtles-here != nobody)[
7 v: Z9 Y3 l) a: T   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.
: i1 X- T; d6 S  M   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
3 l5 p0 n& \. ]% P- [   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; m8 N+ p3 w1 }, X: `   set [trade-record-one-len] of self length [trade-record-one] of self
, f. \, Z. E( J  H, k( B   set trade-record-current( list (timer) (random money-upper-limit))
* w  @. N) x4 K$ |. {6 |
/ B# X0 H1 q/ N/ H8 {9 j9 d% {问题的提示如下:& j2 _4 c- c+ h; W4 [# s3 E0 ]$ u
5 H. e4 m* h4 w- i
error while turtle 50 running OF in procedure DO-BUSINESS
! _; b5 @0 ?) m# G' X! Y0 K  called by procedure GO  i  A, d. C2 N- U1 n  `
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 {, m( {7 W* v
(halted running of go)
: y8 ], w7 G: [5 v: P( b; E* X& P# U5 c; M
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 }2 b: [  Z, M% _" G5 U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0 T2 M$ ^8 f( I
globals[# ~  [! F  B$ ?/ g
xmax
6 a5 H8 }) t% ~1 l- Z* uymax
* _: m1 P/ \( L8 c" C( ?0 qglobal-reputation-list9 ~( A) Z# @* ~# n3 y
) W. D$ {# \: b3 ^3 m+ r: E$ ~
;;
每一个turtle的全局声誉都存在此LIST
6 c. `; o1 ~: F  I) }" `3 lcredibility-list
& q$ t# `& [$ X1 X; I6 T0 `* ]9 S+ f;;
每一个turtle的评价可信度
4 f+ v0 m5 [; t% }  f: w2 Rhonest-service
% y+ b" l( @# \) W1 y: ]unhonest-service& ^# z; O+ x4 {- G6 n7 Q
oscillation, j% [% ]" a8 `* E# O' L2 p
rand-dynamic. R. t9 q7 E- n8 c: ?
]
, _6 S# u! r9 G+ R3 w" e  o
! r. Z' S( f( n# R8 e/ Uturtles-own[* h) Y2 B2 L7 `1 w5 W
trade-record-all
+ G9 Q6 ^3 _$ A& m- a; Q;;a list of lists,
trade-record-one组成8 f6 r/ |4 a. d( b7 {$ o6 H
trade-record-one4 ?7 Z5 c, @: l
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 `" O9 V) Z" L8 F' o6 }# X! f! }
;;[
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]]7 t* l1 \$ n. J; @  U; {/ n
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], t) ?) \" c9 J! `
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
/ `, M3 ~: y/ g3 Q. Q- o0 cneighbor-total
/ @6 s8 M7 p2 L;;
记录该turtle的邻居节点的数目
* ^' l9 N+ B8 z( Ftrade-time
3 x9 H- f1 H8 J' ^  P( y;;
当前发生交易的turtle的交易时间) \4 r/ |/ j# R; K: k
appraise-give
9 [9 U( @0 o2 L;;
当前发生交易时给出的评价  V% J" f9 ~, x* {$ i% g; o' i; q; e; Z
appraise-receive
) S; Q# N- q  o1 f7 |! J% n;;
当前发生交易时收到的评价. [# R6 D- l; W) i& E" `' V9 n
appraise-time7 _5 L5 R  m& L  S8 c
;;
当前发生交易时的评价时间$ B8 f- k# `1 K. B" w
local-reputation-now;;此次交易后相对于对方turtle的局部声誉: b- ~5 ]8 X: D" m. s
trade-times-total
( t6 k+ V: A. ]* d( F) I& i+ _8 y/ h;;
与当前turtle的交易总次数
1 J+ q( E, h" ?4 I, k1 ztrade-money-total5 K3 f: W! @/ B/ C8 N
;;
与当前turtle的交易总金额
$ Y5 W* n6 Q+ f- Rlocal-reputation7 x! _1 y$ `1 k5 Q6 u8 T! }5 w
global-reputation; T! w9 I2 h! O" W; T7 W$ k
credibility1 s8 ?, t' f6 N) C
;;
评价可信度,每次交易后都需要更新
# K& ]/ @0 L- ?$ n7 I7 ^; ^credibility-all- S9 S& @! V) x- L5 r. X  q
;;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7 A3 D6 {6 }8 `) V" X. B
2 k  `! T% ~$ p' M9 V' u2 f
;;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
6 v% ]+ C: @% u8 z! T; a) v5 @credibility-one
* {. N0 T" B( P) B( H;;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$ C% M+ e8 {1 Y) s5 H5 J
global-proportion
; y+ R4 D; M( G& Vcustomer1 F4 A$ F* {% W( w" f
customer-no
' I( e6 E# ~: ?, H  Y: t% Dtrust-ok
1 h! x' M, c' k, Z# r' V! i  ztrade-record-one-len;;trade-record-one的长度8 [% r% T# `1 ?7 {5 O8 M
]
5 V* u  A* C1 E9 b2 c8 ~8 B! x, o" z7 o% @
;;setup procedure
/ r% [; F# u6 z4 n" h2 V0 |( |" r# G5 d% v* @& Y+ G/ ~9 k
to setup: G$ J9 h/ l- V- k2 s3 u7 E5 \6 l

9 y" ~5 U0 o$ nca

2 d% n7 q" z. b
3 B7 Q" ^7 Z: {7 {" R  G9 O$ I5 sinitialize-settings

+ X9 R) B1 \/ c/ R2 C* g' |+ G3 }4 @! M
crt people [setup-turtles]

9 t. H  R5 k* [0 ~, f7 k: k# ?. m8 @1 F0 o
reset-timer

& y% }% p+ Q3 c- f4 q
( L5 w2 n; J- r# u+ zpoll-class
$ b, L3 e( P3 f0 T

! b/ s) w3 B- Lsetup-plots
/ j& X, w, q! B! b
+ t/ q! A, G. C1 C
do-plots

& G. X: Z5 @" F3 I+ Q% o( |end
) x$ T" U# w( f' f+ D9 j- W6 V  t% K) v* u. l' z
to initialize-settings
2 f. U6 J- }* }3 D4 `; M3 k/ W
* A8 |7 O! P0 O- Y1 f; N8 S# }/ vset global-reputation-list []

7 \  U+ H, Z) T6 @: Q: R8 e
3 E5 ]8 q8 i. a1 bset credibility-list n-values people [0.5]
. z- s, r, h' P

9 [  x! T, b& dset honest-service 0
9 {% ^' u' ~# }6 e3 Q% j6 `

/ t- k$ A! v3 U5 A4 x- @" O0 w! Nset unhonest-service 0

6 B, C$ X2 X, S% X2 c  D; P7 A& i& Q3 \" i9 d% G) k3 B8 i) a
set oscillation 0

/ ^9 u9 o/ z+ a
, y/ r) T) g8 o% E- Bset rand-dynamic 0

$ t2 N3 u: d$ ~end
' f; p$ k0 F0 z1 U. S* S; u! `: f8 u0 A3 w3 a" G( ]9 Y% [
to setup-turtles 7 r% N6 A( V& F
set shape "person"
1 N6 `# V1 E# W( }7 m) i4 }setxy random-xcor random-ycor
. f8 Q* k9 V& {& z4 o( N& Qset trade-record-one []
" |) X7 z. T3 |5 r( A
. w- y+ I5 _7 `+ H9 P/ ]
set trade-record-all n-values people [(list (? + 1) 0 0)] ) W  \5 E/ \0 ?6 Q. v- n

' A( n! R. V0 q) w) J& i. ]set trade-record-current []: k; W4 P% S: K" @
set credibility-receive []2 o4 ^; i& z: L1 h: t7 b! z
set local-reputation 0.5
+ b" G2 E; F& S3 A8 qset neighbor-total 0
- r8 ~- H" e: u; l; C/ V% k5 v' e6 yset trade-times-total 0
; v: D% J0 y7 Q2 x" r  |* w# q6 s; Tset trade-money-total 0, m, [, K- q  m
set customer nobody6 K  I! l5 T$ X6 I
set credibility-all n-values people [creat-credibility]# ~4 Q2 @) x, Y
set credibility n-values people [-1]
5 ^( R/ }( C8 ?6 @6 vget-color5 T: p' J5 Q& @4 {

5 c. r- U3 A* B' l0 n7 L/ Pend
* t  q5 i! v% B2 U
) l. L: B0 f" Zto-report creat-credibility
8 A! e+ m" {# X, r+ ?/ p  treport n-values people [0.5]" v% I. I0 ?  P" J/ b0 W
end
! `2 }* t* K, j  d" W7 t! s) ~
, O) y6 u, H! V( I) mto setup-plots
% g0 Q* Z6 W# R
& y. v5 \3 o' |1 Wset xmax 30

- v+ z6 K( a: _. }' c
# Y' f9 B" [, ]; |# w, l! |set ymax 1.0
4 S# w3 o5 K$ Q
$ R8 _( V! q4 k. t
clear-all-plots

( W3 d4 ~( K! c% i7 h1 x- u- \$ v( a# H" w6 n
setup-plot1

( G9 f/ F/ b4 {4 ]6 q9 w
( ?) A5 o3 B& L  J* P# Usetup-plot2

! c& ]4 c$ U( q5 ~8 ~
3 t, z; z; T5 e% _8 p% `setup-plot3

6 h0 e% ^% C0 P* a( \6 gend' y: @! z, _0 K: d! E
- f; b3 w* v3 p6 z$ G, y1 g
;;run time procedures
4 S# M8 c# ]& @9 c: i
, e- S& x% |5 y4 b, lto go+ g# Y% ^2 n' K# p% S7 v' `
/ T. G* F4 X& U) r% d3 p
ask turtles [do-business]

5 _5 [4 C& V2 z$ B8 M8 `end
* j' O1 _7 T8 k) _0 I( H: m, `; c$ w0 l! C0 c/ B& Q, c
to do-business
2 g" C" w0 ?; Q/ ^* o% `3 }! w8 V
6 W4 |1 D& w9 @/ y

- h1 E* l3 v5 z* Mrt random 360

: B) {( m% l9 x8 u2 K5 g  C- c5 c0 |. Q1 I% S6 @& B$ |& s
fd 1
1 t" i  L( w. N0 K
6 O7 G. B$ T4 C) U1 H
ifelse(other turtles-here != nobody)[

5 d- m) Z: {, l, Z' x0 ~* q7 ]5 ?/ |- S
set customer one-of other turtles-here

- Y9 k' q4 S+ N: m/ {) y5 P: E
/ W# `* b; ~" n! W5 ]( o1 `0 F;; set [customer] of customer myself

$ r( `2 k! y8 {  u/ s6 E7 F6 u9 |* e
set [trade-record-one] of self item (([who] of customer) - 1); K- |' x6 i" M
[trade-record-all]of self
( t* Y+ F2 Y  ?0 x0 r! |/ ?: R;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

# X% q- d) o# x7 I; _# K8 z6 o. s# N6 n! N6 F% ~
set [trade-record-one] of customer item (([who] of self) - 1)9 O& W" c% P" H8 S+ X
[trade-record-all]of customer

& g/ R6 l6 {3 F* r1 H# G- G4 I1 Y' Z# v) m7 L
set [trade-record-one-len] of self length [trade-record-one] of self

8 N' k/ Z. w4 i* V
& F0 s4 ^. Y1 g) Oset trade-record-current( list (timer) (random money-upper-limit))

  [- J/ Z& t9 f
/ i) H6 X$ l) A& |  qask self [do-trust]
$ q; `+ i" k. j# T5 g) M;;
先求ij的信任度3 I9 V0 q: q! j& _& o, w: p, p
; b, `! y* `1 L# T" J
if ([trust-ok] of self)
4 E) g* P( E8 s;;
根据ij的信任度来决定是否与j进行交易[% ~  @/ i+ Y1 [9 A- b7 j
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# L: `: ]2 }* Z7 O8 u2 u5 r5 i$ C2 b. q( A! l# ]( T
[

! N7 A. M* A5 L+ k2 I
# r5 w& f5 p1 P7 w8 A1 u5 `do-trade
4 M2 x. m" q/ ^. R7 I) u
, b2 |+ A; |# D
update-credibility-ijl
; Y1 j3 G0 R# o4 I! z
4 [, G" E  m9 D! D' X6 f; |
update-credibility-list6 x# [1 ]+ p7 q5 u. X

* K* g9 ]. _2 m  K( w. O- {9 ?+ S: G$ w! E* v: w
update-global-reputation-list
# N/ I9 n, \; H, j

9 j7 [' b" ]/ I+ A) r- apoll-class

: k5 V5 r: L# l' m9 ]: D6 S! f- m; h& E: H6 }
get-color

5 N" q. V4 D6 r$ I! J8 K% V
$ n  W  Q1 E4 O+ f/ t]]
2 R) e6 P: Z/ u8 S/ W7 w1 {
0 S: r+ q; |3 v0 n* _6 P+ Y;;
如果所得的信任度满足条件,则进行交易) J) H# s6 a' D$ f# L1 a
% W5 K8 S9 f6 S3 V9 p) q% k
[

2 {* N( C7 S: Q1 V1 N9 [* K! C0 h# E% N& m( q- b
rt random 360

/ `5 b0 n2 [, w: U- j
! T1 P) O" a, {) M( O1 c( c- ]fd 1
7 {, r7 D) ~- r# s7 L
$ T& a! H, V' ]
]
3 k! {4 ?; q, i. l- O- F" f

( D, {- u9 o2 u' S4 Vend

7 Y, a$ q- O/ P* J) [# G4 a0 i( q, V* D* {' H+ s0 z* i7 D7 X
to do-trust - C. s! e6 B0 _5 K& p" ~
set trust-ok False7 B$ E, k% J- S- v7 i
8 Q* I& N4 a6 {- J
# A( V( A, x9 `1 O$ o
let max-trade-times 0
1 v: G3 s+ ^: |  l8 t" r7 R- @foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 u  d* ?3 M9 d
let max-trade-money 0! n: S: I# b8 H. `" O8 \
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 T9 N9 l- o8 t9 j
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
; R/ ]* z. p! [* m7 t  m! V
3 S8 M9 J. E& {6 n7 k

$ |' K" L5 _6 d0 gget-global-proportion
& B4 i7 n! d6 d0 ?3 s3 r: Tlet trust-value
. s9 a$ U$ ?' X, ]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)

, t0 K2 ]5 \! `if(trust-value > trade-trust-value)4 ?1 C6 B, w+ I/ w' p* |$ y
[set trust-ok true]
8 t3 U) m2 a; [7 K8 x- R$ S/ }! iend
, e( Y' T+ y0 q* |8 ^
( J% z' A4 R+ a0 `to get-global-proportion
: a) e- o1 i& T# Yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( P7 p2 ~9 _" \* r[set global-proportion 0]$ r) S# J3 X' r  V* r
[let i 0+ b  g! _8 r* d3 w, I7 |/ I; v
let sum-money 0
+ l. u3 J9 `/ h) r8 o) R5 `! vwhile[ i < people]
7 U; f5 G$ w' ^+ i[. g4 q& _( j3 h. s: Y* f! X
if( length (item i
" @: i/ K# ]1 R: _; J. g[trade-record-all] of customer) > 3 )
$ v, P9 \* f  S( D* U  |4 F
[' W4 @% A% I$ E
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  l# ^& A+ y9 J( X* N]- \# i8 j! W5 }0 L! k  T
]
2 W1 l9 n8 H7 i' P3 h9 _1 |! vlet j 0
7 b: L) c3 ]3 J! C: }let note 0- F% |+ Y& o" p  C9 M( p
while[ j < people]
1 q5 f0 R$ y5 g  u! m' E[
: F6 h1 A$ V; B$ _* K% K6 {+ fif( length (item i
7 x/ }% U+ m+ t* E& X8 O7 r[trade-record-all] of customer) > 3 )

  k' G& P  L1 f5 W! D[
7 ^  C0 T7 D* u: H8 u: I+ L1 W- ^ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' \- p. k6 l" }6 Y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 v! I4 x# L" \9 E
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ ]; |  i) }. e]
5 V+ G, X+ E; q( i1 O) @1 A]
! f6 g9 z4 C/ oset global-proportion note
+ m1 V! e, N7 J5 b- b]! U& g7 P% h: q! T, S
end
  @, r9 I8 J# o, E* L4 }
; F8 j( x  d! G. x& v) r% Y0 A( ?to do-trade) H, Q+ w& P( @5 v. v& N" i
;;
这个过程实际上是给双方作出评价的过程" o4 j- o2 Q6 C" X' W  U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( x! Y/ n2 }. x2 Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
( C+ ~" J! b2 x) u/ d1 n$ Eset trade-record-current lput(timer) trade-record-current- j% C! o, `# P! d
;;
评价时间& F% r& N: o" ~
ask myself [
( M$ s) `: p* f0 c3 r& supdate-local-reputation9 d& S; _, k# h7 e& \5 w# \( \' @
set trade-record-current lput([local-reputation] of myself) trade-record-current
! i& N/ ]' d3 z6 ?  k3 Q! A]# t. z9 j: y" R" s, }0 ^
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 H3 w  e$ `3 o! @# r) n
;;
将此次交易的记录加入到trade-record-one( q$ l0 Q4 b( J0 Z
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 F* T9 H4 f8 M! X
let note (item 2 trade-record-current )
* ~' p% ]" p! [3 a0 |# F( y2 ]set trade-record-current
! h' v6 s8 q0 x! P' X  P(replace-item 2 trade-record-current (item 3 trade-record-current))

0 I7 F- y9 K5 _' m' |3 ]" Bset trade-record-current
* c$ U( I8 T: a3 P, w- n(replace-item 3 trade-record-current note)
- k8 O9 @$ i5 C4 d1 t# u
$ T" F' [  V, z' Z+ K0 h

* V- ^# A% A0 [! Pask customer [  w0 s/ V* K" Z- a/ k& X% v6 m8 A1 y+ I
update-local-reputation
4 q2 O; d" q: {. kset trade-record-current
9 E  ]$ ~! d0 Y5 P; m% G(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 K  l4 O* o# A( w2 _4 Z  D# _
]& X8 N$ z& L  W. t# z) W) R

' X5 J: p, j. z3 H' m8 I5 h
2 A+ b# I8 \5 P2 v+ w* ^
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* j% m, V& z7 P) o0 `- w

. [# r, |! D7 l- N1 M3 Fset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- T$ q8 Z) \8 b3 [- o6 y* s: I;;
将此次交易的记录加入到customertrade-record-all
, @( y) d4 c" h) aend. l/ ^4 |5 _: V/ }' F: s; _
2 }6 U6 y6 v1 b7 K
to update-local-reputation+ U4 T* X* c# ^/ K5 y; `) U# E" S
set [trade-record-one-len] of myself length [trade-record-one] of myself
% V- O; y5 U1 k! ~* i# h$ |/ C7 w7 Q1 {0 t

4 g1 N3 k+ x# M3 I/ p;;if [trade-record-one-len] of myself > 3
; t! g" J! C: c- I* k9 @
update-neighbor-total
$ A2 P* v4 y8 c;;
更新邻居节点的数目,在此进行. c6 {, |  u- \* a: K
let i 3
9 ?8 w" Y7 W' L, F1 xlet sum-time 0
5 u6 z  n1 M* S! V0 i! Vwhile[i < [trade-record-one-len] of myself]+ ^+ Y* }. L* j9 A, x0 G/ e7 k
[9 p0 V& h1 [+ }' c' ]! z
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 @# x0 T6 x: s- _set i! h1 ^8 B  [1 |& e& o- g$ R, x
( i + 1)
: U' ?3 h; a& R  d
]; w! `2 [" o3 t: A
let j 3
7 j' H7 F; D, X7 D" E/ Nlet sum-money 0( S2 o/ h0 L3 a4 g9 U) |
while[j < [trade-record-one-len] of myself]3 I7 j' M" Y8 I* z9 n  u
[
9 e( _! t: f- ?1 c7 @+ xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time); v  U. t; x3 Z  j. E' S
set j
# I* ~8 e: `5 O9 G( j + 1)
! H5 X. R% j7 s& A
]
+ S% x6 a; R) t# O- K( f' glet k 3
# d! c1 U- ]1 u" tlet power 0
1 p( D9 n" v' o2 Wlet local 0
( V0 Z/ q. l* V  {while [k <[trade-record-one-len] of myself]
1 a/ N0 A( P4 [+ n0 p, z% Z[9 R  H& P4 K3 d5 a
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) $ x, k3 Q7 z6 V! _+ N/ ~$ g3 B+ e
set k (k + 1)
: p6 E- G4 I& A/ ~* X' e]
* w/ z4 j# Y1 F5 ~- O" r! ~set [local-reputation] of myself (local)
- b! f2 c* Q, aend' C$ V' r) y# a0 h/ b

4 Z# o% T; d; z" u. M# Q0 Dto update-neighbor-total
+ F+ w, c- {' ]) D/ I
, w5 _" l& z; f, ^' Z3 ~/ dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 ]* g5 B  ~" d" W5 l  c- |) `8 |9 }. m0 U2 }) O' I
8 A4 ?" c" [" G5 D( j  w  ]
end
* O9 O7 j% @; v3 @5 V+ B3 H  Z0 |! E1 J8 X% n
to update-credibility-ijl # }: b' j0 ~& D8 n

4 j7 `+ D$ Z9 f6 n;;
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。
) Z8 T& }* }5 i1 }let l 0
9 |9 k) |8 P, X$ |, y' Ewhile[ l < people ]
+ r3 Q+ i3 o1 U6 ?# Q;;
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. F6 K7 t, T. M9 k% U2 r- p6 ^
[7 F: O- Z; I! g7 e+ Z" M& h
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)& T" W8 r& Q8 L/ n. @; W2 d
if (trade-record-one-j-l-len > 3)! G: P$ s  ?& m' `, c; z
[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-one
/ q; m3 {( {$ y* C4 O1 c+ i- Blet i 3# V% J, q, @0 v
let sum-time 0+ r5 I. N% i7 C4 m
while[i < trade-record-one-len]
- k& r4 K0 R7 F, R, s[& i1 o7 R% S* S% x: u
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
2 t6 }' k! M* n7 Kset i2 K, D4 A, I" Z; Z, s
( i + 1)

8 U/ R! u3 h6 i]
3 K9 N1 N- s4 _% W* ~* E: Elet credibility-i-j-l 0
0 X, n/ x! ^+ D;;i
评价(jjl的评价)
4 y9 k9 t* H* i2 p, G" Vlet j 3
# Q8 B& A! S1 W! @' elet k 45 D2 U2 v/ P  ^" k
while[j < trade-record-one-len]3 I+ t4 ]' G: ~" i- N) S
[( [# V/ A; k4 I; _6 {
while [((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5 ?4 p9 g8 \7 S: L5 `2 o
set 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)) m' ]4 g. m. ]
set j8 I) Z& F! T3 ?* R2 e# m
( j + 1)

  T. Q; g. ?% t+ b]* M: Z8 Q3 c3 M) c- N3 o* q
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 )). A: T5 a% Z& B' a& X$ x; r
  w* K5 C/ X# n) a

7 M! {& k- m% T; elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 N% V' q6 E. {+ ]9 \" i;;
及时更新il的评价质量的评价( T$ G/ L. e4 v* f" W2 e
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% o9 n9 _% C' K/ r8 D+ E  oset l (l + 1)
  `4 ^7 ~( T) ]7 v$ |" w]
- l* `8 _, x. |6 c2 v* jend3 S( ?2 ?; U( p. i8 j' S8 q
& d" X. T4 E1 x& ?9 _/ y3 i
to update-credibility-list
; x! U$ R9 V9 x+ z+ [let i 0: F2 \# q: w9 w& C1 {9 G3 Q
while[i < people]. u" Y2 w* c/ A$ S2 p
[
. T9 m4 W  S$ Y9 d; @% ?let j 0" D9 O- Y( |7 p1 L: e$ ~- ]1 ^
let note 0, F1 M5 k8 N9 b7 d9 Q& g
let k 0
( C  j+ ~, ], s- Z2 H3 f- G;;
计作出过评价的邻居节点的数目' x- ~' k! C+ e+ ~- c0 E! W4 s
while[j < people]
, `! p9 P6 Y) }8 a) `5 Y, k[7 C# ?5 ]/ N# r3 V' q  u9 A' ~
if (item j( [credibility] of turtle (i + 1)) != -1)
/ v9 L' t7 N: g/ p$ g( y% j0 ^;;
判断是否给本turtle的评价质量做出过评价的节点: a9 N, X% m& E+ b1 J9 d
[set note (note + item j ([credibility]of turtle (i + 1)))( z# g3 b0 {& P+ i
;;*(exp (-(people - 2)))/(people - 2))]
1 Y( z$ M% n6 H2 L
set k (k + 1)( Y3 I( x; X- s' x  Y
]7 O; W0 {. |# [3 E; R4 j# j
set j (j + 1)
! G  x4 B* x" _3 K]# e6 h' M/ |$ F, U4 ^% Z4 G" T
set note (note *(exp (- (1 / k)))/ k)
$ B+ J9 W/ r4 e8 {set credibility-list (replace-item i credibility-list note)
; o5 e; t  x4 y* D8 J% ~set i (i + 1)
. T0 H7 }; K; K# ~]6 g2 U( I: K' Q( z# _+ F, y+ g) {
end
0 j( M/ x  ]2 P' A" L
+ h* O. o; R  z. zto update-global-reputation-list; @  g5 L; b" U+ Q( n! G( m. @+ `
let j 0; p5 f& F( n+ U% B) ?
while[j < people]5 Y7 C  T" Q0 I& y) i1 q" O
[" a) u1 m" O8 |  x9 \9 ]/ Y
let new 0
" g$ q8 h7 T- P0 H;;
暂存新的一个全局声誉: ^9 {. D- }1 J
let i 0
6 O' j' V) P! R7 Z3 T' a/ b1 R9 Rlet sum-money 0* z! i: H# Y- j# p! g0 s/ |
let credibility-money 0
. v$ ^, `3 [0 o* s8 q/ p/ `while [i < people]
# j) v4 P+ N2 n: d[3 p7 x( V# i) P# n+ j+ W7 e
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 \8 W& r7 L7 r  N$ ^- s1 dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. c' g9 K* l& w4 ^/ h% e+ L+ dset i (i + 1)
" A* C3 N( S9 f" R2 X9 q% N]
  @  H" z- Y8 s9 ]4 Ilet k 0
; S! g* F/ T  t" Flet new1 0/ H7 V, N8 j$ \1 W) d2 e
while [k < people]
: Z% J& f6 Y" F: a! g[
$ m5 ~5 ?- C/ @) Rset 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)  E9 Z2 b0 |4 f
set k (k + 1)7 s) `" v' z4 N6 i' w
]
' }: X1 g# G7 m6 g! {set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # F" H3 e. r$ M3 Z
set global-reputation-list (replace-item j global-reputation-list new)
+ }' n, Y4 y; O- S/ V/ kset j (j + 1)
" C% L' A3 R# i7 d1 H- y]
* M. b, R1 C" k( C! xend
% j8 [# F9 u5 D# _
4 R) E( D5 P/ @0 B% I1 L# G3 i( y" R, p; K: W5 H
$ ~' S5 l( q% M$ O2 J9 B1 _! c
to get-color4 k0 k+ f1 U1 s/ O3 |- C0 o

. N9 o! I5 A9 r. U2 B  t! wset color blue

% g$ A, ]& I- K6 ~end
% E0 L- i" i3 H( v5 s" Y$ d# H
* ?* D5 i& ^; x; x' d. ]$ eto poll-class
% A0 I: [) r; w( Send5 ~5 ?) g' m5 y& f
, H) V* C) k# I/ E
to setup-plot15 J; n# H6 @+ i* t# Q
1 ~7 f' v0 A  f+ y. K
set-current-plot "Trends-of-Local-reputation"

- |! f" j8 P; a* o8 k
; _6 I' }- O) `set-plot-x-range 0 xmax

) C, k: x+ i" u& V" ]9 n
$ t. y! S7 L. ]( qset-plot-y-range 0.0 ymax
" b5 T0 ?- y! c8 ]& p
end
* j, f2 d0 J: _/ |  g2 Y% ~* j+ _2 d; y
to setup-plot2# i6 l) q( K% w0 e: }  s- B8 U5 `
; j+ D' D& a8 Z- a
set-current-plot "Trends-of-global-reputation"
( v6 z3 _: P9 {: c" A
' {" y6 i* ?( F8 K# m# O" T
set-plot-x-range 0 xmax
: Q7 L. J7 a( h' v' F
' \+ J1 t) n* V. P6 [' P- ~! I( H
set-plot-y-range 0.0 ymax

, u( ?! r* t) b$ r7 Oend
* L! }. `/ K" n4 s, J+ Q2 d  x* j+ C  X. X# e% W8 w% }7 J0 f
to setup-plot3
* J. m  p" i* j: Y7 n
% j# F& p0 f0 I/ U" Uset-current-plot "Trends-of-credibility"
& ?% W% L# V' p9 n& }. \, m

" d' i' G5 R. r# e- Gset-plot-x-range 0 xmax
' T/ U4 M* m1 U9 W7 u, Q/ i$ O
/ ?" J$ }+ G- m
set-plot-y-range 0.0 ymax
% z$ J8 Q' d1 `4 c, M
end
7 F" }  C! n5 G: J' A! s, P( ~8 n) N+ }. P, E  X' b
to do-plots
* {' l, L5 k: i- ^( p% c7 Xset-current-plot "Trends-of-Local-reputation"  ~3 V- e! H. N- d7 ?3 D5 t
set-current-plot-pen "Honest service"" P  [: l* C0 B7 O4 j
end' O* F8 J. ]/ L2 C3 d

$ G: N4 L+ {+ W1 @& u; j, J[ 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.; R/ m( ~1 }3 V+ {4 O" M

9 z1 Q$ r/ r) }% {& \$ |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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