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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:
/ y0 q3 z) f* r9 x: D/ A8 u* nto do-business
; ]. R( L; s& c- Q rt random 360, `: \8 B7 _7 o1 Z0 c4 \  w5 r4 F
fd 17 D5 }" }" S/ G& A
ifelse(other turtles-here != nobody)[
% i2 R) E& c' [; S* \0 ~( ]   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.6 o4 z+ V& M# f
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, E7 l* S0 J) E- V/ T9 H2 @2 m, s   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer* B! O# f- @& B" A% d
   set [trade-record-one-len] of self length [trade-record-one] of self
/ ?- A' l9 T" n- J& A0 t2 w   set trade-record-current( list (timer) (random money-upper-limit))7 u" o' O/ P' h3 X) N! h
9 g/ a5 e' a2 ^- f% n8 T5 a
问题的提示如下:8 {- ]3 ^; y( ~9 R, c4 O, R5 h
# ]+ z. ^, J3 c
error while turtle 50 running OF in procedure DO-BUSINESS
, w6 X# y+ O1 X; w; i; h: T  called by procedure GO! J* K. x, p0 k8 x
OF expected input to be a turtle agentset or turtle but got NOBODY instead.% `$ ~- H& N+ r4 m# k
(halted running of go)
6 \. E* k* G/ b. T1 [/ j3 c" G* K
; O3 p) }6 L: f! ]5 {3 Q9 Q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~~$ T+ Z: U* F* P+ P% |- g' |, p8 o$ E; ]
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
$ o8 P: G: e; J  `! `* \/ [: gglobals[
' U+ g6 ~* G) ~* J+ V/ H/ U* y9 _xmax8 x  u4 Q. P9 v2 q& H* D$ v# V- e
ymax
" V8 S  T9 n- p6 S) ?/ b& Y& _global-reputation-list6 t: U1 d2 C# e; e

6 p0 }0 f2 \2 h) a% j% a  v;;
每一个turtle的全局声誉都存在此LIST
: I8 t) Z5 C1 Z! G1 D/ }credibility-list
9 U. N& Y" _0 ]3 c! ~) w- L' U& E;;
每一个turtle的评价可信度
0 o, d# L. ]5 i5 D8 qhonest-service9 i2 s3 [0 O0 {' u: L
unhonest-service
0 p8 m8 d) {  t: Soscillation  x, i3 ^3 s% ~, f5 q
rand-dynamic
! v) F: S# _! U]
( y5 e& y$ ^% \0 P/ a8 D# g. g
# N# D9 ^$ w4 ?0 S# ]turtles-own[
* l8 ~2 w; S, u6 w$ y1 C; H( N# Dtrade-record-all
. I" m) ?, F2 J+ \7 r1 `0 r5 K# V;;a list of lists,
trade-record-one组成
- ?$ F' ~+ n# a8 t' Xtrade-record-one
: S6 p% a+ G% E) ?! K;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) `; U5 {+ {0 t: F
& r3 B0 A/ v& ^" l( \( p5 P" }! y: v;;[
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]]
# D* D, n1 C$ R) Z2 q( B% S% @  Gtrade-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]" f" d0 ~* B; A) K7 o! r* r9 O
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
. D* ?* G4 V( vneighbor-total
4 @- q' m' i" d  Z4 {7 n4 D, B;;
记录该turtle的邻居节点的数目5 w3 y( H8 Q% P# N: u
trade-time- U, b% h2 k+ `. J9 H
;;
当前发生交易的turtle的交易时间
; H  @0 ]$ i8 cappraise-give4 d3 z; E$ M' w* q. G/ u
;;
当前发生交易时给出的评价
1 Q+ S, X# d  X( d9 Tappraise-receive
" Y" H- o' u" Y" C& T- b2 C& l;;
当前发生交易时收到的评价
& R$ R% A& s" h1 K2 t4 Rappraise-time
- y$ ]! Z4 q4 p  Y7 I3 H' |7 m;;
当前发生交易时的评价时间
; ~5 Z$ a: `1 p8 n; |local-reputation-now;;此次交易后相对于对方turtle的局部声誉0 y" V8 m3 f: O
trade-times-total
: u& h' @. n' |8 g" X/ c7 a: a2 n  x;;
与当前turtle的交易总次数+ A7 Q& D, o7 |9 a2 v; F! B
trade-money-total6 w) H+ k$ ^* P0 `! O; \1 L6 V% D
;;
与当前turtle的交易总金额
7 i( P0 H# D' M9 M9 K; alocal-reputation
2 N* e6 |8 N4 c, t% q/ v- vglobal-reputation% l- L4 [: k1 G/ Y
credibility
1 [# v1 P- B! p;;
评价可信度,每次交易后都需要更新
% N3 O, [/ u# k0 I8 \credibility-all
# R3 ?7 d1 S! H, Q6 O9 U4 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
, }0 z6 r* _3 L6 R
- N& d& b6 X9 e/ \7 c4 x' A;;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
. u; D  j( Z+ n( \- Scredibility-one1 c& L0 J% M  r' p
;;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
& N& h3 \$ B+ Q# n6 ?global-proportion3 Y2 L$ `, {7 L. j7 l- t7 I: x3 t% h9 k
customer5 a1 g- `. `% \. D
customer-no5 p* p/ r" M* Z! e! c& \; S) F
trust-ok
" j: e2 Y0 D! f# W2 ^trade-record-one-len;;trade-record-one的长度
  b6 I5 z1 v! ?% o) t]0 m! X0 [" V0 k$ @8 N1 r& p, p; z
4 G4 Z: h1 {) a* m
;;setup procedure
0 ^' z: ?; G  h: T# g9 ]' ^$ A% R* g+ C  b
to setup& s4 @& ^/ Y9 O
7 I( ^6 ?" `3 z6 e
ca
# \$ s0 s/ r8 I. ^

5 F% B' }# E. {3 T9 r5 J1 kinitialize-settings
1 S1 B2 u5 p9 G  Z+ ?

+ Q$ F7 |- j/ t& S% ?8 c6 Rcrt people [setup-turtles]

8 f/ c/ K- y$ k$ w! q, g  y0 ^- \* I5 M2 m7 \
reset-timer

; `  I, o' ]$ [8 V2 B5 N, V2 @+ \. Z& F3 W! x
poll-class

% j" O! E; Y( O" ?/ {. @+ I
6 B. O" T& k6 W, K; P) Y& M# j, d" xsetup-plots

6 _) T& o* ]  i5 Y' v% q" o# z
* o+ l+ a1 z* ^7 K+ M" k  ado-plots
% ]4 P0 \0 T, s& h, h/ H) D
end
" p/ M" F* W0 L: \
$ F8 A( g+ n8 n" j! {7 K, rto initialize-settings
3 ?% E9 o5 ?0 k$ j2 }7 R7 X9 l( L- j, p  T+ H% e6 X
set global-reputation-list []
- |( `0 D) R" T' M, m9 }
2 R6 m6 Q( Q  V/ W  W; b/ P" ^
set credibility-list n-values people [0.5]

) Q2 j0 c+ S2 A1 r* W1 v; K; k0 X# N8 C. W0 g5 \$ O
set honest-service 0

; g+ z9 X/ b3 _
6 b0 ^- X, f2 Tset unhonest-service 0

1 e/ ^( y$ y4 w4 o' w# P1 m5 s2 j
set oscillation 0

8 ?4 l3 B' X% p2 _) l+ c" e8 V8 x1 G$ c
set rand-dynamic 0

/ h  ?0 G) O3 T+ V  {; ?7 Send
: a2 u; u' q% R, c3 s
6 K$ |" o$ \, y8 K6 D  Jto setup-turtles : k5 a$ i& O2 S$ N4 @
set shape "person"
! s' g3 y7 ?3 b$ tsetxy random-xcor random-ycor
- o+ V/ a7 }8 s: t1 rset trade-record-one []8 U' N8 C5 j& }
" z6 S% ]- s/ W& D' M1 O
set trade-record-all n-values people [(list (? + 1) 0 0)] # F& C' z9 g8 {, t) S8 e/ H9 y
: O, O8 j/ ^( }& I3 F9 w# k& ]8 u& R
set trade-record-current []8 X4 k2 d4 v* q
set credibility-receive []  z% f5 c/ e- e" g% W' u5 S/ ^
set local-reputation 0.50 k9 G- H. H8 R; G( H% X; V# x1 y
set neighbor-total 0( V  @3 s# A! ~5 X9 b5 m5 b" n
set trade-times-total 0
4 r  E0 D. i  f6 W# }set trade-money-total 0
% @+ v& j* B+ m2 uset customer nobody
0 S8 R: y! L9 ]set credibility-all n-values people [creat-credibility]
! L# n% H  A2 y8 _+ kset credibility n-values people [-1]
5 z& q$ \5 C3 Z8 u4 @2 W, n* Rget-color+ s9 r8 i+ i+ r4 r6 Q- o: q

8 M* }( [  g# Bend3 h' N+ i# P6 ]4 F* C  W/ u/ G4 v) _4 y
5 u4 T; i' }  {# M
to-report creat-credibility
- E- L" h  N' I, s6 |# ^# V0 creport n-values people [0.5]
2 {1 z. `0 X3 Z, yend
- T1 Q; ~8 m2 c; y% Q
1 y/ ^) Y* f( I1 O$ o1 A0 k' R- ~- y$ rto setup-plots
+ M+ d, \! G) q, D& j* R
/ u2 o* U% [. b. d" jset xmax 30

9 v0 M4 @6 B5 D4 b( ]2 }8 D/ p
: j3 H$ K' W/ Eset ymax 1.0

0 X1 x& D" p# F5 J
% Q/ L: i8 C% O6 g# h/ Vclear-all-plots

% _3 k$ A2 d2 j/ x) [' E( m5 U. B, Z6 _: n& K
setup-plot1

" ?) ?! V/ Q, Z( m5 R
, w$ `& r- F  W4 W- g. bsetup-plot2

# s4 T! S6 M! R6 H) `" s
0 V( E$ S$ G1 C0 psetup-plot3
# C% W' n5 j6 q. U5 y2 \
end
1 Z' H. Q. n- Y& _8 p
0 ^7 g& T" M& h' c9 z, p% F  r6 A# ?;;run time procedures+ c# ?1 W, n9 `1 c: [; [# u) {5 V4 @8 v

, `9 o9 _  D3 m  @! L. H' Nto go
' w6 n0 V5 J( L+ q4 [2 B
0 S# j: P; n& n* Jask turtles [do-business]

7 R/ Y* F3 C9 Z. ]! ]- H7 c7 Mend
' i# a7 c+ a( E+ v% P# `3 @1 Y3 w& O# \
to do-business
8 D* O" X5 v1 C

) q+ J- S6 S" @/ M* ^- R$ ~: {/ Y5 \1 U. }* \- u
rt random 360
) T/ G' ^/ n( K2 A
& E, x& j& z# ^8 T; q5 E
fd 1

% a8 G3 B5 [. L" z3 V" O: k0 i
* [, @3 d* g& ~! z$ q8 m, s# Wifelse(other turtles-here != nobody)[

+ G$ S' p( r# e8 o9 B' v$ M0 p8 ^. }$ H1 t8 Q+ H: Z9 {
set customer one-of other turtles-here

3 Y- m0 r& F, s2 f# l5 G; S/ J9 ?4 z0 A/ e0 `( V
;; set [customer] of customer myself

! ?2 q/ x  m  d/ `: V
7 Y) j& w5 t4 c- p7 @# Y, gset [trade-record-one] of self item (([who] of customer) - 1)8 ]/ g7 r4 `! }* r6 s. R7 K6 T
[trade-record-all]of self
' j# `& {" G3 };;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 t7 n& [3 y5 V5 @0 O& X
/ S8 Y, A+ |7 Aset [trade-record-one] of customer item (([who] of self) - 1)
# `3 d) F$ Z$ y& }9 C[trade-record-all]of customer

+ _  ]9 q- B( P/ p$ C8 y! y0 f* T# R, f5 U5 m
set [trade-record-one-len] of self length [trade-record-one] of self
8 y/ W- r8 Q& }  n
- V) D" a/ J: E6 t; n% q& q" v
set trade-record-current( list (timer) (random money-upper-limit))

9 `5 V! D" [6 v4 o% L; \4 X
3 T8 P# y" F9 y& Iask self [do-trust], ]6 ?2 A9 k- v( d: B
;;
先求ij的信任度* L0 i# @4 g& F* `# d

$ @& }) V1 z8 J$ @/ g5 f! U9 E8 uif ([trust-ok] of self)
6 `' T& t; R6 p" t+ w* l, H2 z' I( S;;
根据ij的信任度来决定是否与j进行交易[
" n  P  v5 O, Kask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself* ~6 R- @. Y( j7 E& r$ V

! }% y, w, G! h: [' e1 V[
9 {1 r9 ]! C) ]3 s
9 w& Q5 J! D5 {! M
do-trade
4 F& N0 v; M/ R: n  m$ y
9 ^6 n4 k! x2 L. m2 g/ ~
update-credibility-ijl
0 ]! h' p+ f9 P4 B# q& Q! \

' R( o2 ~, c9 [; h8 V0 z3 pupdate-credibility-list& v, K% G7 I+ G$ x+ T
8 }+ K  S5 r+ F9 X3 t9 N, u

% i3 W9 ?9 A# ]0 wupdate-global-reputation-list

. \( _% v9 K# t8 n4 A. V6 n; `5 Q4 |4 s: `; o$ Q; @
poll-class

  ]+ L" M  ~. [7 \( y! u, e- z) [. A. S9 ?
get-color

" q! D( n) O0 I' x. Y, Q( ?3 {2 p0 o4 r9 N  _
]]
. q* j- H* u2 f4 X+ q* P3 b* M* ]/ I3 s9 V8 s* g
;;
如果所得的信任度满足条件,则进行交易) i# h/ \0 C% N0 s: [) j! t+ y
* [8 t8 \7 @1 Q: i% k
[

- U9 h$ X' Y0 O9 Y  r8 L: ?* ?
* d& c+ I# X' h$ e# L; |/ mrt random 360
6 P0 f3 [0 ?$ v: G$ o( ^
# R/ H0 g$ T4 m' u- G  X
fd 1

6 P# d; ?9 ]: Q; L+ K
4 H# }1 p# @& O# l  h]

4 R4 W- D, j) B* ~, J! l, g3 b4 o, s8 b" {0 D
end
" n; J$ K9 V& Y$ A/ n3 G

% F/ C! m5 X+ D. b" ito do-trust
9 r' D. b+ Q! w6 N7 K2 [  i$ vset trust-ok False+ t- P1 `1 E/ x' n

3 {8 P- A! [* O1 S7 t
5 ?" C' X& W- g( ~  a! s, m$ f
let max-trade-times 0: ^4 \4 q$ C  `8 Y1 b- s/ t1 }
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
. f" [' b* J. W( Q. B2 |3 E* `9 R: nlet max-trade-money 0& J# c3 O$ H0 p2 n$ U5 T0 @) i) w
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* O5 D! S( _; Z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))8 t4 ^7 u" Y) m  j, t- ]

7 {- F) i3 G1 F
1 H: e3 A+ i( f9 D
get-global-proportion3 J8 ]. j! A! ]% W4 y/ z
let trust-value3 h2 I. J& a( |7 X" ]7 K$ U5 e/ x% v
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)

+ `; W4 Y) D2 ~% p3 Y0 k7 ^if(trust-value > trade-trust-value)
& @: o; Q4 W4 n/ D, d5 _. }[set trust-ok true]
% h" g7 ]) ]0 p& `+ f" b: o3 ?# ^end3 K2 E$ n7 |& M
. i2 K- \  w4 q% ]4 z
to get-global-proportion
; X) e! a6 J1 g% @: z/ V; Hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)$ Y) ^- {8 ?8 [* C
[set global-proportion 0]1 H: h7 X# {2 b; ]# @6 o
[let i 0
8 |. H* a( y/ a' Jlet sum-money 0
# `' V7 l1 _. L" {while[ i < people]- t$ E6 J/ s* K: N6 F2 `
[" Q/ p$ q4 ?6 B+ w% j
if( length (item i
; m! o9 `# }9 k1 e+ W[trade-record-all] of customer) > 3 )

9 q) O# l- e5 c/ z, t6 x0 |[+ B6 B& ?+ F, S
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)). q4 @/ j  l* ~8 Q' m
]
6 n8 ?5 j. t, k]
2 o" S  z/ W: c6 v! r' nlet j 0
- H) j1 Z8 \3 @$ l- U6 C2 `! Ylet note 0
( M. L& O5 c2 v* i; U$ ewhile[ j < people]
: T1 C! e1 y0 j1 q/ r[
# \8 S. U" Z/ y8 U! dif( length (item i, t( \: q1 l, ^! y: ]5 {7 s
[trade-record-all] of customer) > 3 )

6 m/ E8 @! c. \; N/ ~( H* |7 t[! Y$ a4 M6 f: X4 ~$ q4 S) c" f: ^9 v
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 C0 B3 k* j3 F* Q- N[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
6 q3 u5 |! M6 I$ f0 X9 @! A3 j& w[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& r* H/ {* j9 C* |  p, ]" q7 B: `
]& m' \" I  ?: Q
]
; z# j+ ?6 ~8 G8 G. U4 p- oset global-proportion note9 a2 e& C1 G; h" Y
]1 l3 O$ e. W* [: ^1 \% `9 _
end% @; P8 g5 I9 B+ n0 F( Z
' w7 ?- w7 v: r% M
to do-trade' @/ d' ?+ l5 h2 k0 H$ o
;;
这个过程实际上是给双方作出评价的过程" b) f. y2 F& \2 ?0 |3 r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( K0 d# w$ m7 Z5 q* x! P/ C3 Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价' X3 Y" E" G5 y: ]* I8 H5 B# W3 H
set trade-record-current lput(timer) trade-record-current) m4 L1 U4 U) I) C. l7 e6 K" J
;;
评价时间: t; `, s9 U% y% R- g4 C0 I
ask myself [, d4 z. J. o- Z: F/ k
update-local-reputation2 K( O' G! n" T' g
set trade-record-current lput([local-reputation] of myself) trade-record-current8 y1 e' Q+ o7 L6 Y7 T
]4 B  E  z  e$ ]2 P5 H$ z
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" N* K9 l# t$ ?6 ~- k- a- {. T$ U;;
将此次交易的记录加入到trade-record-one7 }0 ?  K7 G2 y  r  M# Z+ y$ P
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ x1 {4 i5 e$ ~: ~/ u: z7 hlet note (item 2 trade-record-current ), s$ }6 u+ i& U9 W7 W/ \! x2 F
set trade-record-current
1 d$ T  G0 j7 g% d  L0 |2 N(replace-item 2 trade-record-current (item 3 trade-record-current))

; O9 r9 V0 x+ uset trade-record-current: c5 ~7 f4 k1 S& A
(replace-item 3 trade-record-current note)
8 n) z( h* L, |
+ o% D$ ^0 Q0 j7 K! e  `9 s* {
, e" E5 d. M6 E+ P, A
ask customer [' z* u5 J6 O5 W! o: Y& a
update-local-reputation
- }7 _  f* V7 |* Z% N# sset trade-record-current
9 I) r* C. w- _; B' {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

# d3 a9 \1 I) e], m' O7 \  o! z7 z4 H1 Q( u

) k# Y0 Q: }% x" i, i

" J- o& `8 Z) Wset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  c1 p. d. b. v: {& @
8 w3 R: T3 ]1 G  b+ D
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)): l( q# T2 K9 ?' ~* C4 d: ^+ Q. w
;;
将此次交易的记录加入到customertrade-record-all
( v, M& J. U# S+ send
* d$ z+ B0 S( l  V2 @, c4 A  h* p, o$ m8 Z+ ~# J9 n
to update-local-reputation
$ z: B% h+ D9 [7 e' D# zset [trade-record-one-len] of myself length [trade-record-one] of myself7 c, _+ d4 z- @
+ T9 d" ~. ^1 }) u% O7 l( g

% M; E2 [  @# M0 o& I;;if [trade-record-one-len] of myself > 3
/ K6 k. E; f7 c, K* H) v& \; S; i
update-neighbor-total& K% W5 W' [  s( {. y1 f
;;
更新邻居节点的数目,在此进行
( g# |- |+ z: T/ e( }let i 3
$ K6 ?% E4 P) R, N4 N0 w! \let sum-time 0
, ~" s; w# U) N) W9 B* K3 {while[i < [trade-record-one-len] of myself]
, H3 m- E5 [" O3 w6 f0 C9 I9 S[9 m! }& I7 J! w$ ?
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ), {6 r5 W5 A; E$ Q7 A
set i
7 h( a) o' {  D# A) H' ^( i + 1)
  U  v& }: k8 n
]
) b. k7 e+ K6 c: F4 Q% k# qlet j 3
+ f; |: r2 ?2 l+ L. _let sum-money 0
& c- v" ^( t/ z$ h: R* ^while[j < [trade-record-one-len] of myself]
2 O1 ^( B3 f4 a6 W, u[
- R2 n- N9 I4 B: [# zset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
( Z% {$ m; t0 |: r" H, Eset j
1 t9 o3 J7 k# t5 R- @( j + 1)

4 x# y; J" k- K]
; a/ y! A' c+ M: S: @+ ~  G3 h8 elet k 3, U. Y4 q) s/ B" [# |* F3 W
let power 0
# X% V$ o% Q8 U9 ^  x! Elet local 0/ T) L$ [" g5 b6 z1 W
while [k <[trade-record-one-len] of myself]  b7 W4 k; z& Q5 @3 E
[5 Y  o* G; N# _$ v" E) v6 o- z- I
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 w9 j: s. X1 Z( T
set k (k + 1)  m" D9 b) n, i/ U+ |3 u) C
]
% Z  E! |/ t7 U7 ^* O. m* f5 h) c% |set [local-reputation] of myself (local)
$ d5 D/ R, B+ k" Z7 a2 |end$ f8 r+ c# _7 @6 d: Z( S
, p* n% [: v: K0 _4 q  p" ^
to update-neighbor-total9 |, o8 |  I3 E; Q) H! ]; ~

6 m7 k& C. p6 k; I& j9 Nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]3 o$ ]& G+ a8 i' E& ~! p7 D

2 Q; c* f8 O$ S, C! h: l
- T0 F+ I' C2 R% h) Z/ S! t  q
end
- B7 N2 }/ |1 \3 c1 L+ s! M. p9 E* a/ G) F) ]
to update-credibility-ijl % F5 c! B- }$ B
8 ^( V2 I8 D! H' \5 O
;;
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。
4 H- u3 E( W" v: \% p6 G5 Glet l 0
; y: f* F( I7 uwhile[ l < people ]2 p* Z# \7 g" v
;;
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6 {' b5 e) l9 l
[
+ c+ W) v5 S5 Xlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 R" h2 h' y8 M8 k, E  h+ [( _
if (trade-record-one-j-l-len > 3)
- i" @1 S, s* @3 U, h[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, K% ^8 V. O( g; ^5 A1 X$ ^
let i 3
% s. E; @- u, U" Zlet sum-time 09 b% Q* ?# g& S+ s8 {
while[i < trade-record-one-len]( w9 K5 N7 m8 U. |/ E4 X4 _- y
[" `" f: T+ g& P  j, Z" j: n- G9 Q7 V
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" f3 h5 E# F8 M; Zset i
; n3 m, Z- ]( O# W& Q" A  d( i + 1)
5 Z$ |" S8 w0 P& M. Y. [5 Y- z
]
; ?( q" p- ^' z; d7 U4 v; Elet credibility-i-j-l 0+ {- f3 U3 q( w' s5 ]
;;i
评价(jjl的评价)# r+ g; C! h" n7 b' T+ o
let j 3
7 h8 a, \9 f5 \" O* q( s; n0 y6 V/ nlet k 4
+ R: r7 K1 l% wwhile[j < trade-record-one-len]
" F) k' `6 `9 M8 p$ I[
& c' n7 d! v' e* Cwhile [((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+ r, Q' n5 p5 S' }% e6 l
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)  {) n6 t# t5 H% }8 b
set j* u& G7 D; A+ y+ N
( j + 1)

7 p* s# e$ z) a7 I$ z7 p]8 M2 w# H) H2 w, l3 V& @
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 ))
+ t- [  ^: L; ?7 `# n! M# @9 d( G' r% t

3 Y2 v" O7 @, P1 T) g! S( xlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ G1 z6 ~! P6 k: m' F7 U, };;
及时更新il的评价质量的评价
: Z( v. C4 @0 B9 c0 R1 m% {set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]0 U7 h5 E- @! j( S9 e. m: X
set l (l + 1)
% J/ I  P2 C+ Z% r  Z# A]
2 X% z& l0 J* T! Lend3 _5 k9 X* F0 s# X( N0 R
4 v; V2 L' S2 r! B/ W; X  s
to update-credibility-list3 o  I) _) U% y6 f
let i 0( C: [$ W: \# ^2 f' R' S
while[i < people]& ^6 p7 d" v1 Y) Z8 R
[
* ?' p3 `1 p9 m& Qlet j 0
% c* ~0 M3 J4 D3 Z( Q/ K5 {- Vlet note 0
9 W3 f+ g7 T" H4 E9 ?/ @/ r  slet k 0
( ~9 x% j' S6 |;;
计作出过评价的邻居节点的数目1 l% f0 J1 G- ?/ m' i2 I, c6 o
while[j < people]2 f. M" K# p/ V- s- S
[. x# s# l3 l) m' G* n; Q5 ], z
if (item j( [credibility] of turtle (i + 1)) != -1)
1 G# F5 C  A% l* |$ l! d;;
判断是否给本turtle的评价质量做出过评价的节点
) w, {: }; c2 J9 S) `8 s. B[set note (note + item j ([credibility]of turtle (i + 1)))
8 d) Z" F+ b# X# p: L. R;;*(exp (-(people - 2)))/(people - 2))]
% K6 `. Y5 _( i
set k (k + 1): c" h6 g: ~5 v; l6 d/ A( q
]! D/ \: n; ]5 R" c; U
set j (j + 1)3 `' E) d% L* S- V1 p) ?# ~
]
5 q; Q8 U. T! x1 k2 {set note (note *(exp (- (1 / k)))/ k)( s6 Y  I. }2 o3 U* r
set credibility-list (replace-item i credibility-list note)
5 V, e- |7 E* wset i (i + 1)% U& K6 y& w2 Q" V( u
]
' t7 f" Z+ Q1 n$ i5 b- b5 Aend- C7 Z! ^+ z9 i( c
8 x) ~6 d# ?# v9 c( o
to update-global-reputation-list1 g" c4 l3 a0 T8 D4 }' e/ c2 A! c
let j 0
  W% D9 @5 y  U: `8 Z% Wwhile[j < people]( S3 j2 f0 \) Q9 j  P3 U
[3 d8 H; R4 C5 |" [! [7 V
let new 0  ], R7 E3 k/ y
;;
暂存新的一个全局声誉6 N0 Z/ E! d( b, B
let i 0
$ |2 z( S$ j, F# P! K6 S. wlet sum-money 0
8 l" P5 M$ P  b# I6 v# [let credibility-money 0
$ [# j6 T/ B  }/ W; dwhile [i < people]
: F/ k- a2 ?8 ~3 d: r[6 u, V5 g' Z; t7 }
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 L1 E8 u  q0 `$ n, vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))& t+ ?1 P% t/ E: [2 N
set i (i + 1)
9 m& {8 L) ^2 @" B( @/ o]( ~& i- _* C' x1 R9 v% p
let k 0; O, b4 W1 f+ D
let new1 0
7 H2 E; A2 z- I/ T" Swhile [k < people]# z  Z2 K" j1 a2 \+ _7 S( f6 S
[
% z2 f- {) v: ]9 w% s! ~7 Iset 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)+ k4 ?* `! Z. C! n7 _* W
set k (k + 1)5 S1 d1 A. a5 l
]" ?2 l' {0 S) ~5 N  {! @* u
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / f$ n: q' W1 b$ S
set global-reputation-list (replace-item j global-reputation-list new). V( G0 [  J  ?! o: m' K9 U3 Q( R
set j (j + 1)
: i5 B) T7 B3 Q]
. T; K2 F7 m5 O) n( _end
" m* I$ E% X9 @" _+ B* j
& U! b# u  f; K- m8 p
$ @, b  `1 {+ h( x  r- e* r# \# F( i
to get-color* m7 E" |# d( N, E! a7 m/ e6 ]/ E( ?
9 g5 s8 n8 ^# @0 M+ J8 E4 Q! h
set color blue

( \3 g; B/ r7 H8 V% g) `/ @end
5 X+ M/ Z, O! R* v: X7 `9 a$ M5 z6 K! i4 k: h& U
to poll-class
+ Y1 p" @9 D0 C- ]; zend
( y8 l" I0 k: Y7 w
2 W2 D: N* _" `  t7 s6 Gto setup-plot1& @& X# g; i+ }- t/ ?6 j& O$ P" {: _
$ e; X* O* T  K0 _2 Y
set-current-plot "Trends-of-Local-reputation"
5 u  P9 H! _6 N( j3 R
& }6 J9 Z% B$ r+ A  c
set-plot-x-range 0 xmax

4 T0 V1 L, m# m2 z2 H" F
4 H/ K2 r, y: m0 oset-plot-y-range 0.0 ymax

. V3 r" q  u: q- C( eend4 X* G$ @" ~. G  E- {; U

6 K6 \& j9 ^  s1 J* M0 P" Wto setup-plot20 `/ g: e9 K8 @$ l( L3 H
" S1 P0 g9 M" T. n( p; q. m2 F/ Y& `
set-current-plot "Trends-of-global-reputation"

# w2 v! I& T; c4 j& Q& i
3 H* O$ B+ v6 v. Sset-plot-x-range 0 xmax

& o8 b: I0 v0 s" D  ?  C+ d+ A" @/ Y
# t. d0 N6 |5 Rset-plot-y-range 0.0 ymax
$ c+ y  `6 w7 q/ b
end. d% ~" v$ e9 U0 \

+ ?* z" D0 Q& \. |# ~( a9 Gto setup-plot3
$ g, }. \9 X. ^/ N( M' }$ P  m' R1 U. M1 c: K" A) o0 C
set-current-plot "Trends-of-credibility"

( j2 n' m! T3 U! D% `- d& B6 {/ a, I  m
set-plot-x-range 0 xmax
7 c% b4 u3 k! q) M

$ z1 S$ {5 B1 a3 Y! _2 v3 qset-plot-y-range 0.0 ymax

  G% j( }$ ?/ ]- p; Q5 Yend
# N# S8 b9 F. F+ [6 a5 ~
$ Y: A7 T! Z3 q$ V8 Nto do-plots
: e+ q% t# u( Qset-current-plot "Trends-of-Local-reputation"
' ?# D$ K9 k$ b+ iset-current-plot-pen "Honest service"
8 h2 [  p: O0 e5 h! f& @; s+ \! V7 Rend9 M7 h. @+ [( D* c* I* }
6 t& u7 r  L# V3 K2 h, W$ f
[ 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.. D& U/ e4 C. |# \! Q* X

. j. A+ w: D1 O) a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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