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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:+ |! J( Z0 U( G0 r2 N) u/ f
to do-business
9 W1 G2 I' ?* U( c) I" e rt random 360% h7 z8 g( d6 _2 Q( O0 m$ R
fd 1+ h# D1 s/ V' l5 S3 p- J
ifelse(other turtles-here != nobody)[
3 T* E1 T; ^) q+ @5 ~% @   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.
! K" Q+ D7 P# u' K0 I& A* m% l4 B   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    - q' p+ ~9 X/ f' A! p
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& i/ s3 r' ^8 v$ B8 `! K
   set [trade-record-one-len] of self length [trade-record-one] of self
5 Y, b/ n$ B+ ?1 s' e2 u1 D* D. L   set trade-record-current( list (timer) (random money-upper-limit))
! ^1 v, k( c8 ^/ v
+ ]2 Y3 p) K/ P0 R问题的提示如下:3 H+ g  a4 ?0 r  R

4 D5 Y& H: m% P0 p* merror while turtle 50 running OF in procedure DO-BUSINESS. F' l# ^0 S8 q& E. B9 g
  called by procedure GO
& w& X, k8 o3 a4 ]6 EOF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 t8 v6 i, z+ l: o7 H8 |( S. ]
(halted running of go)
  p) m( Z+ K, A, P/ Z6 K2 ~; L. b0 P
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~~6 V% d7 n3 b0 C7 r" [' ^
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* a  g+ C& f# \+ h9 m
globals[7 n% X+ ^7 t8 e$ S  k
xmax) W: G& W! W/ m" w
ymax& y, _1 {3 s' k- ?& O0 g2 k/ {
global-reputation-list. B# ^( e+ _1 o" V$ J1 f
5 G( A1 _) p! O# [# T: p: k- ^1 Y# d
;;
每一个turtle的全局声誉都存在此LIST; Y7 I1 z$ W; s
credibility-list
. v8 F3 q) Q% A! B$ N;;
每一个turtle的评价可信度. S- Q4 l& c  j
honest-service
% E# g3 v- W" @; o8 |" L) e; Cunhonest-service
6 _: y1 I6 [- c3 }" s6 t2 Joscillation
2 ~% e2 g4 @  _3 jrand-dynamic
4 k9 T4 _; X9 A1 L0 N]
( |! J' a7 C- S5 o5 o% C" X; v
, u/ Z& A; Y/ gturtles-own[
* P- G; _3 X/ W% Ltrade-record-all# U' {2 i- T7 s- U
;;a list of lists,
trade-record-one组成1 L& ?. Q& i* L! D4 }
trade-record-one
( L" x5 {$ ?; p8 Q;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录* S4 m, Q5 a' W; A+ o2 J& Y

8 _$ [, |, h0 `# E* D# d  h. ^  U;;[
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]]+ ?: A; ?0 r* M0 m) H) @; i: z
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]
& M: _' C+ [4 `* A( @% qcredibility-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
# Z% k4 ], }9 P9 Hneighbor-total2 G1 N0 R5 ^& O: z& h' `
;;
记录该turtle的邻居节点的数目
& p2 i1 k4 `- wtrade-time
# d. I: r. e0 t& ~;;
当前发生交易的turtle的交易时间
3 v9 m: i. }% M/ N. q8 R) e. Fappraise-give
1 |- Z) P" K# f6 s4 g. C;;
当前发生交易时给出的评价
; H0 U9 j8 y9 D1 a1 Pappraise-receive
8 n0 C0 S: a8 U$ S3 A;;
当前发生交易时收到的评价' K5 B7 i6 w% M8 n4 A
appraise-time7 M) |9 `7 s. H/ g4 U
;;
当前发生交易时的评价时间
7 d' X% J# M/ C7 o' s. @/ O3 h% t8 olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 A- |/ Z. ?$ q, C0 }trade-times-total7 Q! O& V* a% p4 q+ w0 f$ G; k
;;
与当前turtle的交易总次数
! ^2 l) ^2 w, g& G1 U$ itrade-money-total" t- c- q- u" J4 ]* R* ]7 B
;;
与当前turtle的交易总金额
0 b( r, g& P* |6 }! y" nlocal-reputation" y7 d0 ?" a4 u1 h$ A1 X# d/ `
global-reputation
! F& w/ m) K8 Z" Ucredibility
% {% n' h1 C  O$ M6 u; _) C6 a;;
评价可信度,每次交易后都需要更新( ~7 Y8 w( A! q. `- {0 I9 ~6 H" t) I
credibility-all. Y, C/ @5 R9 @1 Q8 d; @
;;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
9 k% L. C8 ~3 P& s& c$ o
* L, Q# ]$ J! v" E;;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  Y. M) }0 e  J1 x
credibility-one
, K5 K! Q0 B, f;;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people0 t# e4 M( O& B" ^* u
global-proportion7 P& E( {3 U; Q
customer
4 d% ]6 @0 ?0 T: {; |0 dcustomer-no
! P0 R% j' Q" {! a' rtrust-ok, E' ]% l: ?& d; z, B) r% s2 G
trade-record-one-len;;trade-record-one的长度
3 c8 ~* A/ N, s. K! W]
1 a+ R$ t0 n9 X/ j8 v' I& A3 d1 t
;;setup procedure( D# S+ u+ p, j5 _
  R4 e& r1 N9 W0 Y3 z- F" _
to setup# e/ Y6 G! F  W+ `% t9 s6 z
& y6 k3 p( [; l- I3 I; I
ca
0 e7 f5 u$ i" |: d2 \& j
" \: T0 m  V0 |$ \& C
initialize-settings
8 X9 t! J: \7 z( {! e

- \# a; V7 n8 Q/ G- ?crt people [setup-turtles]
0 U  _% E+ B0 ]* z1 u+ U

; M: E/ n/ C. g  }reset-timer

) ^- P4 w, E5 c# s9 U; T
7 E( l3 \& `+ rpoll-class

( w* A: V4 z$ [* s) j
8 u+ S- S. u2 psetup-plots

; y4 w& i/ O0 l* U. U) w/ {  {' q4 d  |! b0 P  P4 D
do-plots

) k& f" c# I6 ?$ R8 k1 Tend
* s0 Z1 W0 e1 U7 u! g
3 n' v: E# v, B5 |to initialize-settings. X; J3 ~+ _! m1 F! K) r6 _
$ j9 _; a" K2 |- v: E/ R
set global-reputation-list []
! ~- u, ^+ U; o6 u! I

$ C+ p+ Q( E( d- c, Hset credibility-list n-values people [0.5]

0 s1 f" u! b4 Q5 ^5 U' p0 \# R% a* R$ H$ p- c: g- }! a
set honest-service 0
" c& L/ [$ Q' n$ y- w, m, v
3 Y* f1 v4 G' W# S
set unhonest-service 0

% G/ R5 j4 m) @  k0 t1 f
6 J' G& d3 V8 U6 V( Cset oscillation 0
' K0 i3 Z2 E# H* s0 ]6 x
) E* J5 M! h! e; H" D9 V/ p' B
set rand-dynamic 0
. l9 K& G# q4 h# ^& |8 C
end1 Q4 i. _& A% x7 J* ^) C3 ?. ?6 ?5 d

6 C# T. e, ~+ E: Wto setup-turtles
. I: [- q& D( Z  n2 f# ?' Y3 j2 oset shape "person"
5 |6 U1 U: |" U7 U* e0 bsetxy random-xcor random-ycor* J+ K6 u, k2 `4 Z2 u
set trade-record-one []
) w; T7 W) H; Z: o! P

' c8 p% g* j2 C; zset trade-record-all n-values people [(list (? + 1) 0 0)]
4 J% N( _2 ?4 F; s# m9 a1 V; Y
1 n# s* `) c6 G* s
set trade-record-current []' K" x) f8 A! w/ ?' C- i
set credibility-receive []
8 E8 M0 H" r8 z# @set local-reputation 0.5% M. l1 t3 O, _5 P% S+ r3 C, ^
set neighbor-total 0
5 Y, U; Q% [/ X. L0 ]" Q0 Zset trade-times-total 0
: R2 \, u1 r  }. b; G3 g; yset trade-money-total 0
1 I, ]( c$ K) w# T" j! b* `set customer nobody
7 k% Y: m7 {! W3 o/ cset credibility-all n-values people [creat-credibility]# p) _' w& i9 a# c' n" |
set credibility n-values people [-1]% B. M1 |6 F, Y& R
get-color# }' }* L* R- Q' v

& T2 T8 d/ Z; O0 C: i2 f9 Zend
1 {  }, ?# ^0 q# S6 j2 W- \5 u
to-report creat-credibility1 z2 a6 R8 m/ z$ K% X
report n-values people [0.5]2 j' M: [# l' U+ x* @# ?! Y
end+ V0 u! t0 H( L5 w( ]- ^
# _1 F% X% H  @( V2 |
to setup-plots5 [9 O' M+ H  \+ V& J1 F& @
- x# u- [9 b9 _( j; B0 n( C
set xmax 30

0 D% w6 i$ T! q
. v& a5 J( n4 W+ F% Dset ymax 1.0
/ N* P% v5 I5 V" R

5 ]! L1 L- b! O. {+ ]clear-all-plots

  U9 r6 U5 e% c8 m1 P/ x+ b( a- @2 }- q1 t+ A- O* T
setup-plot1
5 u. b! V6 o* v2 B
6 ?: f: d/ h) e/ {
setup-plot2

; d6 r) C7 p0 o* R9 A, h: e
* c9 }' `  h5 ^) k( I! Dsetup-plot3
% z4 ^. n) N" K" o1 _  ], ~
end
" q! T+ u; E% h. m/ u! A! x
2 k1 N( J1 ~6 ~+ l4 \9 m5 }8 ~9 f;;run time procedures1 G6 q  m2 e$ v7 i/ l
+ K/ h1 M' ~, R: E! @& z+ G
to go
3 ], H* }9 B) ~$ l; v& o( R6 F) R" l$ l3 h" m1 N
ask turtles [do-business]
7 M$ ?- |8 `! b' q: a4 M* b
end4 Q3 J% a. g4 k% U  r9 W

/ P  m+ w) S( \6 P! yto do-business % b3 R* q; H7 s/ @

7 ^, O" ]% q' d* o. h# L1 l
9 {6 Q! p. P) X+ _$ [& zrt random 360
4 X5 p0 R' V7 b- u( r) q+ ^

: V) o+ T3 @: x2 F* x0 Y" T1 c% Sfd 1

9 ?! I' U1 `3 a  R
! m  B8 |- C5 h. X) `9 ^) P, Uifelse(other turtles-here != nobody)[

* t3 ]4 x" W' _' S; T+ L8 B, _6 c. F0 E9 s
set customer one-of other turtles-here
9 Y+ t4 v+ }- t" J5 P3 B+ `1 j

& p5 z! G2 d  z1 T% e: E4 W  M/ I;; set [customer] of customer myself

0 u* l8 [, j" B3 X5 w6 h
) {3 F9 |* ~. U( V% ~+ e$ Sset [trade-record-one] of self item (([who] of customer) - 1)
0 [# R8 N" p; B$ ~4 U4 u0 R[trade-record-all]of self7 |; u) [" @4 U" c0 z3 q
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" B. S+ e* s: P, p' s2 N; |. \

1 x" J9 E. B; \5 Aset [trade-record-one] of customer item (([who] of self) - 1)
& I: h& d0 I# y8 r) {' }[trade-record-all]of customer

. P" y+ L7 G; O6 f! T- r: @- X$ D. U  {
set [trade-record-one-len] of self length [trade-record-one] of self
* Q9 Q: ]; j' A2 }2 q/ J. W

, Z) U1 i% n6 U# o  h7 I1 j) ^! Qset trade-record-current( list (timer) (random money-upper-limit))

8 F; _1 m  y# t+ P" r; t8 ?! e% E1 [; k
ask self [do-trust]
2 u0 [9 `% ^2 C3 K2 h0 q+ j;;
先求ij的信任度2 y4 u( C" ^: ?! D; A8 B! V
' Y5 H, a0 ^7 s) a/ ~& h: d
if ([trust-ok] of self)" Q+ R% H* w. J% `9 d6 ]
;;
根据ij的信任度来决定是否与j进行交易[' `( ^2 \/ M% Z5 Z
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& L, u0 t4 {! [% [; z- c/ U

6 `5 \# O+ i7 e1 y) k3 ?3 P! q2 o[

+ f- B+ l/ d/ N2 }9 [
# a! B! ~2 {( x; |" ^  M% O- {do-trade
8 Z( M/ [- i; R6 f: I+ D/ O

& _: H2 p9 @# H' bupdate-credibility-ijl

' t" }  M1 x7 R
+ l+ S; E* V2 T- w3 [update-credibility-list
; @5 o/ m# f8 W% N+ {

4 H% e. }1 c+ j8 R" y; X8 h0 l- V5 t9 X& A* ], W5 M5 j* F
update-global-reputation-list
& }3 V; j" D+ [( D
2 ~/ N1 F0 G- v2 T1 e" J1 l$ m
poll-class

" g9 x+ ^: e; o6 @
( C! B' g; c  m- I8 I" xget-color

/ Z! W# u7 _  T# f2 x  e+ z' c0 u# P7 ]/ f" L& D  p9 c
]]/ S0 _( A1 l- g( R' ]
) s* H, f, }5 S2 n0 a+ }5 F7 j* F
;;
如果所得的信任度满足条件,则进行交易
: }8 C$ A8 j; U6 z6 ?5 ~/ w0 d7 z5 e7 y
[
8 @, y6 B+ w* ~; [. _  O4 X

( j! i4 i( P* m- d& I! R0 i2 a- brt random 360
3 I! Y1 {2 E6 _; Z

! k  F2 q8 N' f+ l  X/ V. h( P9 Pfd 1
- A# k, o& Y# ?( j
) S1 |4 d. v, ?3 }, m
]

6 g0 M: g( [" W4 t
- h7 ?9 U7 l, s) \3 z2 l) l3 wend

$ i9 |" `& a7 O7 W% W1 V5 u
6 W% H" p0 e: q6 [0 m5 ]( [' Xto do-trust
: _7 `# v2 W" H! M% d; w- pset trust-ok False
1 S% o, `+ b& d0 D; a& s) [' S# P# u6 W* D( m9 l, c

1 n, }5 P5 a9 c  j7 x. ulet max-trade-times 08 R4 t2 C6 m, v- T% G4 `. @; \
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- U0 h/ N# f- e% f0 {7 J& olet max-trade-money 0
2 {. m* s: d" T1 gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* _0 v2 F5 V7 _
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 s5 e% i' \' s* p& }

3 l- [0 y9 X4 f' H7 H  z

! V+ K; ?) n# J8 Uget-global-proportion* ?4 [5 j2 l" v4 y( }, h
let trust-value4 W8 r; F2 }+ n
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)
  |) }, S) [5 l  x* z% l
if(trust-value > trade-trust-value)( S7 ^1 o# ~6 n9 ]6 l; b6 u! i! N
[set trust-ok true]  ~% A% f6 [  b% `' D4 v- ]
end
& e  }) S, j" K8 f# I: u( A0 ?$ |, k3 E( w2 M+ A7 ?
to get-global-proportion
; g* b, H: j" u, [' Cifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ \2 }! t# W8 @2 K: e. c[set global-proportion 0]! G4 C% v: R. g/ d3 C8 H8 w
[let i 0* N& t( D; M" g" N
let sum-money 0
8 N0 `! l$ B+ p3 @4 a% J$ z  L, jwhile[ i < people]
  p1 A7 |0 G# s4 k/ S2 z[. h# V# e' r1 ]( T% G" a1 o
if( length (item i
: p, y% E# M$ u, K* @# }% @[trade-record-all] of customer) > 3 )
- c: I+ _; u' Z8 M
[" z4 @* ^3 j/ O2 w' A6 G2 v
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
. K+ X" d: @5 M; z]
% K4 {7 {' c1 v3 J4 ]]
& ?$ h0 b1 O6 Q& r8 H. i! wlet j 03 @' \  ]( a4 {1 l$ K
let note 0
" L: Y' E& T. bwhile[ j < people]+ C& V5 v2 l! V! n% Q- {
[
% T  G  }& P: c! b1 Vif( length (item i) o6 ~  t2 a6 U/ E- w: P) p" g
[trade-record-all] of customer) > 3 )
, y" A2 K; S8 d" p! X
[3 R4 W/ q! f) D5 Y5 y5 g2 Y7 H
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)( L8 q1 G& a4 S5 c
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 z: ^, I" j' W/ G1 I
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ w- T7 p" O+ j- E2 N9 @& ~
]
5 M( J+ P2 ^  {4 u; V$ `) R* p% K- f]0 D1 |' N; J1 Z: ~# ?- W* Z
set global-proportion note
- q% b/ |9 |5 @]) I8 D5 B2 J) r
end. D% A& {4 v) G
+ t- d5 X# G1 W8 V( c
to do-trade
' F) t$ H2 [% h' M2 r;;
这个过程实际上是给双方作出评价的过程
0 \5 ~: l. [1 z2 J. rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) ?9 }) K, z5 y9 y8 [  H  n6 n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
" ?' m3 I" {! z$ ^: F3 C, ]set trade-record-current lput(timer) trade-record-current6 u8 K- I' O, {  Q8 @- p4 b6 l0 Z
;;
评价时间6 z0 W4 A) ]& o7 T
ask myself [
: g* U# j9 g3 w5 dupdate-local-reputation
' ~1 b1 K. B, V' e! \! T9 _2 Nset trade-record-current lput([local-reputation] of myself) trade-record-current
! J8 P  U- S% _8 c0 t8 R]
7 v7 Z8 Z$ y% T7 l9 iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself1 i6 T3 X* h6 g5 F
;;
将此次交易的记录加入到trade-record-one
8 a% V4 W$ Z, H. T8 ?: n" x2 dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 a* a2 R- A  O  xlet note (item 2 trade-record-current )
+ q; c1 @, {4 Z9 Mset trade-record-current
& [. O  _  E% h4 c0 W) t7 T1 @(replace-item 2 trade-record-current (item 3 trade-record-current))

! v5 b. q! c) W6 j* Wset trade-record-current
/ n) V" W/ |$ }& y5 \( r, G(replace-item 3 trade-record-current note)
5 |* g9 ?, O7 I# {4 P2 d
6 J& Z' D' g/ J# d$ x

$ |& [* J" {# N/ Iask customer [
& ~  M1 I6 D: d; _$ kupdate-local-reputation- ^# o$ B) N' G
set trade-record-current
7 W' L7 G2 s, ~(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& z* z6 I; P0 C
]
# V5 L. T& B4 X; u
5 Z% l; s4 u/ k$ x+ F* a2 v

! Q% T: X9 c) `; s6 m" `set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& N) \" j  q5 P8 l7 f/ F* E
! T- f1 S3 q+ x! r& g6 L) t' m5 Y8 r* B
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 }; I$ j) C' i/ K;;
将此次交易的记录加入到customertrade-record-all( U9 J2 P; _: x' _
end
) R* n! o# m) D% n, _( B2 }# |$ R/ X
to update-local-reputation. s: g  g9 x0 s* h$ {
set [trade-record-one-len] of myself length [trade-record-one] of myself) |" @) J- I# I0 k9 ~

8 k% J2 w5 Z9 w- W$ t! g' [) A
3 X9 ^" A7 T! z( a" Y! @;;if [trade-record-one-len] of myself > 3

5 i6 h  T. ?" @1 {" yupdate-neighbor-total
& c0 X& w8 }4 w9 ^( T# v;;
更新邻居节点的数目,在此进行2 R  a% s4 @8 |9 x- l: M
let i 3/ w3 g" Y) R1 Z" G  h: [
let sum-time 0; l% x& M7 R1 B( b
while[i < [trade-record-one-len] of myself]
$ V3 K! P. C: w6 @2 J2 F[
% _4 R: ^9 s7 Dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
9 o9 O1 ]4 s) ?- P! U: l# |set i, {* f2 j, ]. ]( D9 U# ?, K% f5 a
( i + 1)
/ j# U2 h2 M6 p$ a( `* h
]
  |: {! B. h* H4 }( b5 Jlet j 3! W5 o8 R' i, D9 v$ Q! V  u
let sum-money 0
9 D, Y" _6 s. H" zwhile[j < [trade-record-one-len] of myself]
5 C( h, r, J) [4 i1 D# X[, h4 Y" D2 T, @! N$ Z1 }
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)8 ?+ w# \3 Z7 @' U) H
set j5 Z1 `+ X0 Y7 q1 b  ^! i
( j + 1)
; C7 l1 Z0 X; R/ W  k
]
; i+ B2 v& O8 d- E' Wlet k 30 q  m# v3 i% w3 I2 ]; z
let power 0
( u0 Y& L1 V( c$ F. s- A/ U, Qlet local 0
" y% h/ q9 D( N4 ~. u: U; ^4 j: lwhile [k <[trade-record-one-len] of myself]- h7 ]) E8 S7 W4 V1 i3 a6 V, H
[6 o/ u& \* c$ n' F( x) X& U4 w
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)
8 _9 `) i2 C) J' L- z  v0 i, tset k (k + 1)
0 o' ?$ v3 l3 d]+ r* w( R# x& V6 T/ }
set [local-reputation] of myself (local)+ y' V0 ^, d. F4 `
end7 X; P" Z4 h3 g* ~" a* P

- d# ^9 ]7 G% x) ?7 Y+ Wto update-neighbor-total
* W0 Q& A0 p) ?* t0 L9 j5 `8 ^5 h8 A3 x$ [; H: x
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
8 Z' p6 I  E- k$ H  D# \% y+ E/ O- N* L2 B5 x! _; b+ q

$ ^% c0 C$ }* M5 J: _2 {# ^end
! f4 v0 }. S7 z4 Q$ }5 `
& F2 X( Q& `3 \* s7 a4 y( M9 a) qto update-credibility-ijl
" R5 H) D* I, e9 e7 I4 U) D: b; [" T$ w$ |( \
;;
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。! ]  _. j1 i* l4 i2 r; Y
let l 0
  i8 A9 M- g9 E9 dwhile[ l < people ]* H! U( y( r3 h) Z( e7 F2 }
;;
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
0 l/ N3 \5 V$ W  C( Y9 `[( D. a- U+ v' Y- d7 X/ Z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
  d' P5 e, z1 Y1 \) O' }if (trade-record-one-j-l-len > 3)
- U: a. b) q( _2 V, N[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
, O, v% }  m$ u% e$ D) Clet i 3: U& g. b( l6 z7 G7 M
let sum-time 0
' _8 }: e. n# x$ s9 e6 v5 Rwhile[i < trade-record-one-len], [& {: F8 x$ _( a1 Z
[
' x" t3 r0 F# z- ^% r1 ~+ Mset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
9 y- I, L4 m" B2 f! ?* G. oset i
. B, F  ~; ~/ A5 ~% ?2 k( i + 1)
, H/ ]- }$ d. g! B+ W2 |7 `0 I- q
]" u9 p. u5 e, C' d  @. X
let credibility-i-j-l 0& J, t* S; E3 e4 l1 a- V
;;i
评价(jjl的评价)' M! G; h2 y2 r* P
let j 3" I8 S  b3 ~8 K0 x% x9 g1 N
let k 4
) |9 E% D: d: i: d9 b" Iwhile[j < trade-record-one-len]
5 @2 i. x( B7 u[
1 }9 f/ t! \. C4 n' ywhile [((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$ H  P: n9 h+ Y+ ?+ H
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)& S7 o6 r7 k+ {
set j
$ X9 a# @1 m8 `5 I( j + 1)

+ e) x4 U0 P+ u/ y# Z( `: I; J1 n]
" U7 Q' g6 U! N- G: fset [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 ))5 |5 f1 G+ B1 K9 @6 T

3 J4 }4 U- ~  @3 ?& Z. U/ R
0 T2 z' `7 x" M
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 Z) ^) Q& i# p  N, H;;
及时更新il的评价质量的评价
6 c/ z5 ~" b5 E3 jset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]; W1 f7 X! s, h3 w
set l (l + 1)! N. F/ E1 |4 r( z' [/ a
]
; F4 o6 J) ^* G1 Wend' f7 P. z8 E1 d7 C/ Q( h
' F) i* w/ Q' ~' b5 V; W: A
to update-credibility-list
$ G1 m9 D9 H% v/ _6 W0 r) alet i 0
  S& |4 x" H/ z, t7 iwhile[i < people]% h& v6 e6 p3 K% M, _
[% P% P4 U' a2 A
let j 0/ D5 d: ?3 x  Z0 S9 Q
let note 0( |) D0 _, D" w9 ^
let k 04 Q' ~, u( j, U- K
;;
计作出过评价的邻居节点的数目
; s6 ^! X: N, p* Lwhile[j < people]
! v) O  _4 f2 ~[9 T; D" A7 l) G( ?. V3 L$ ~
if (item j( [credibility] of turtle (i + 1)) != -1)5 O2 M! y$ V7 ~/ m
;;
判断是否给本turtle的评价质量做出过评价的节点
7 n; v7 J$ b$ U) S: \1 @3 e; `[set note (note + item j ([credibility]of turtle (i + 1)))' O2 g# E! C; m. m! Y
;;*(exp (-(people - 2)))/(people - 2))]

; V) |$ k& b; M+ m3 W# b' f( Dset k (k + 1)
, a, m$ r4 ^& R. c0 ?6 ?]
( u( R8 M; d6 V6 F6 b5 _) Lset j (j + 1)
  a4 q# H6 c) Y( Z+ ?$ w  Z7 B]
" w. `, W# c* O3 r) Uset note (note *(exp (- (1 / k)))/ k)0 Q. r" s3 V% H1 H
set credibility-list (replace-item i credibility-list note)
1 }2 P& N; A8 D5 ~set i (i + 1)* y7 ^  f( G' d+ p# `2 C1 g: v
]
* L+ s- u. z4 V  g4 e8 J6 c% @end4 G  D% F/ p- b$ c( J! W; z
5 N; I& F4 ?: N+ F& p8 U
to update-global-reputation-list
1 F% f5 J5 F3 A* g2 C. Ulet j 0
# s3 a+ }# i- a& dwhile[j < people]6 l5 m' ^9 p& A4 u8 s( l" U
[/ N! P1 G: J+ _) r. E
let new 0+ T; v6 g) {& {$ ^
;;
暂存新的一个全局声誉4 T; D; I3 c  ~: q! X
let i 0
6 v1 A! E6 I9 J, T# Qlet sum-money 0/ D6 ]8 y1 m5 J2 r
let credibility-money 0, g0 X" n( T) B; K2 q9 R* e: M4 T9 I
while [i < people]
1 A$ v8 u+ @# A. a# J7 h2 S[
4 q' \) |1 w0 f( A3 f( l6 Xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 Z& C1 a/ M6 X4 H' V
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* ?3 M( P. @# }4 S5 e/ W. Zset i (i + 1)  B9 u7 E# F) ^) B8 e
]- d4 v* j+ I& }: A
let k 0
2 s) \) E# _3 y2 Zlet new1 0
3 y4 j( N6 c, K2 {1 [. R/ D; J8 owhile [k < people]
) ?6 m4 P( V$ U, n7 p1 M  q[8 ?; z9 I+ o: N; u+ E; C
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)  n" c" s- H& R* r4 f
set k (k + 1)
  K( |$ P$ P( s9 \* r5 J- m$ t]
* z3 Q7 W2 q. n1 a7 e& Zset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. Z5 J- Q  d: A- {0 M* p' Z5 Vset global-reputation-list (replace-item j global-reputation-list new)
' l0 l6 H; q9 u/ t2 ]5 d/ f: cset j (j + 1)/ @2 n. Q0 q- ]' ?; \
]
# g- [5 v; G0 d5 [% b9 G6 ~end( M6 o# a9 W2 j/ s: O
' D/ X# _9 w7 d- g+ [; [: V

, F1 c( h: r7 {0 F( I) h$ a6 W4 k0 n# Z  `9 p5 n, X! U
to get-color3 r7 ?' I* V3 b# H# _5 R  [7 w2 N

' U9 k7 S* X/ O8 Kset color blue
. b$ u2 r% G0 L1 j  a8 C1 r
end
9 x& E4 b) z) W7 W% h4 X' r2 ^$ o: q& C) Y" o) ]- d( T& g4 l* [
to poll-class. C3 L2 I! h6 m6 |+ O. x
end; U; X- I& G; c8 l0 T
% d6 I6 h8 ~3 K$ k7 B. q" j
to setup-plot1
! e* m, t# I  b* l. v- b& ^( z# Y2 L7 |0 S1 N8 F
set-current-plot "Trends-of-Local-reputation"
; G% [- r2 u, j* _- R, P

0 m$ `- T' j$ O" e% B( B, Aset-plot-x-range 0 xmax
5 \' m3 Q: p+ f

1 t& N; a9 |; b0 U8 ~7 B- iset-plot-y-range 0.0 ymax

8 K# N9 b: G0 k% r+ iend( A; F+ Z1 J) [7 v& N+ E& J
- ]7 V, }$ Z) p; n8 w% ?" h
to setup-plot2
8 l- H( K3 t* ~- ^$ N% P5 f; @, b1 O) Q
set-current-plot "Trends-of-global-reputation"

# j! m( u5 ?  h4 m9 W1 M
0 h0 z' }2 `3 Rset-plot-x-range 0 xmax
3 S& U2 H9 @. ~& R0 j1 t

$ f. ]6 R8 x+ t4 h8 {! Y0 eset-plot-y-range 0.0 ymax

1 B. V9 m9 K: ?. Zend
# X/ A" U1 u$ W2 P6 O$ y' j0 p$ `# N7 m3 N6 n
to setup-plot3
# M: [5 m! `$ P. L6 Y; f1 y: e+ E" ]
set-current-plot "Trends-of-credibility"
6 _% N1 _% p, V

1 _& D( i. ~$ V+ E6 ]set-plot-x-range 0 xmax
' M0 d" y  c9 F" Z1 E3 c
' p# `) I9 u% T* N1 \' f
set-plot-y-range 0.0 ymax
; g+ l" [+ B: [' U- r
end) D5 Y- v: a8 R- X
) R" }9 L0 O# p, d. \/ \/ c
to do-plots
7 a' d* D( O+ `$ N( Y# jset-current-plot "Trends-of-Local-reputation"+ N; p, t! F5 }+ K2 K
set-current-plot-pen "Honest service"$ j$ y" K2 E+ p- r+ {; M% J
end
2 {( ]" v1 M, W+ m, |' _( `% A1 a0 Y6 c9 _9 l9 E
[ 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.5 m6 O' s+ ~9 P! q$ _8 [( {! u
; @8 p- H' V- i1 _: h
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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