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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:$ ~7 S, d# g8 f3 `2 Q* t
to do-business
8 r! `0 J. q9 a5 i9 s6 c rt random 360: }, Y' z) }, S# c0 a0 q( N) C5 h
fd 1
. U! ]! s! F3 L: j ifelse(other turtles-here != nobody)[  {& M. q6 H! l+ ^; G/ D
   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.
( |3 c) T1 D( }# X/ ]0 X. A   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. l$ {, k7 r4 e. Z4 e! w   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; r3 d% P0 Q! ], l- Q' X
   set [trade-record-one-len] of self length [trade-record-one] of self
/ ~/ n. m  |* }' T6 B) o   set trade-record-current( list (timer) (random money-upper-limit)), }4 R1 u% B/ E# U

8 a$ R' }3 g. ?; p# A问题的提示如下:# r9 _( G6 L( ~/ U* \  ^

6 }0 H+ ?2 q+ L/ |error while turtle 50 running OF in procedure DO-BUSINESS9 g/ j5 N& H0 |
  called by procedure GO
# q+ C& N1 u- K% m' ^OF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 u4 q3 z4 q9 j( S/ B9 F3 {
(halted running of go)& c) e) a6 Z: [& \

- u" J0 `/ [- G. o; ]: \) k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~~
# `+ w$ V# d1 t/ @1 W2 T! ?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
$ B, A' ?' u$ I  D. o- k( z: {globals[
: _4 B( i% N! Z0 p- B: f! jxmax5 H, ~0 y+ k+ L, m6 }! D
ymax
, N. b6 h( k0 M9 Kglobal-reputation-list" Z# V4 `8 A% I: H; m4 Q0 j& x! d

7 Y+ i5 A$ o7 L" f/ {4 G;;
每一个turtle的全局声誉都存在此LIST
0 k0 @/ d- _5 ]( z# }" t# _credibility-list1 k6 b( W) v  i$ I0 i
;;
每一个turtle的评价可信度
% ^& Q) s9 J+ J/ Phonest-service* y" ?$ h5 L% |: i
unhonest-service0 `0 m9 M/ a, |0 G, q" m
oscillation+ V. p7 M* b, o3 O- f
rand-dynamic! |/ K( H- \: e  Z+ D
]' X& [* d0 ~" H4 ~* ~" S

8 g+ r: j* W& ?* }& |2 L8 Uturtles-own[
1 Z( ?7 f0 c! p% Gtrade-record-all: t5 x6 z! g+ S8 A' Y
;;a list of lists,
trade-record-one组成  l! u$ ~. L4 D) _/ m6 {6 \# Q
trade-record-one
' }1 h5 S) Q; l0 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
8 r. W4 c1 t" e' g4 t; u$ ~$ x- {4 _/ F( W; h
;;[
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]]+ u; s3 V7 d; `4 y% p
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]
: p1 M8 S# l( d* z0 e1 X  icredibility-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
. k% D( v4 q& C+ Qneighbor-total! B8 K* w3 V! C( y, `
;;
记录该turtle的邻居节点的数目) R8 U- @$ B; D
trade-time2 }- n8 d3 @  |3 O: `& z: C
;;
当前发生交易的turtle的交易时间& Z$ }2 ]1 g. q
appraise-give- q& u5 ]% r0 V; M- {0 X
;;
当前发生交易时给出的评价
6 i5 Q8 N$ k2 z0 m2 F& |8 Aappraise-receive
( G. Y2 L3 \' j/ k& X$ V3 T;;
当前发生交易时收到的评价4 _5 b0 j- ^" r
appraise-time/ y, B; {1 U5 Z2 g5 R' K1 H1 c: d
;;
当前发生交易时的评价时间9 U7 `( S; b, }( \% f  Q
local-reputation-now;;此次交易后相对于对方turtle的局部声誉' b% l* Q5 X! l9 @0 a
trade-times-total5 k9 P6 p% U7 z/ f
;;
与当前turtle的交易总次数' z" ?+ l) C5 e9 `
trade-money-total
) y4 J- G5 p2 R;;
与当前turtle的交易总金额. w1 Z1 f0 j, ^4 S
local-reputation9 n0 J  x( K: E
global-reputation( P+ t2 g; e+ n2 M  p
credibility
  ~8 m/ I" ?8 q- O. z& P. x/ \! K;;
评价可信度,每次交易后都需要更新
3 c  n! G( M% hcredibility-all
6 B$ y8 v9 i: N/ U1 Y;;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
+ Z9 @! ]% v' Y
: b! X4 z) c# A" k7 K- I;;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
5 Q9 R5 b2 j$ }4 D1 [credibility-one/ Q; L- F( a2 m) X# E" w
;;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
! _/ u5 f+ S) A) B/ vglobal-proportion4 t$ ~, H$ C6 y, E
customer/ J: D3 t; B; |# Q% }2 I
customer-no* v, ^! J) {, D' v( E& U' u# b
trust-ok4 i  ?3 @- c0 |0 f6 Z1 _3 Z
trade-record-one-len;;trade-record-one的长度
. D* e3 I/ J: i7 o- s]6 I2 J6 |7 J0 u) `  S

. i7 v( d- ~; e6 z8 x' r, G8 A+ R;;setup procedure
/ {: m, O1 j4 R1 V. O$ B# [+ ~) j, [; C$ M+ M! _6 T
to setup* N- ?# v6 y8 {. e1 l4 n
" a$ W& W# Q+ y# H! ]4 r2 T: ^1 e/ s
ca
- N4 }- c. \2 r- ~. n  q, g
' W* d6 w+ b: d: d1 {$ k7 v
initialize-settings
3 v; U+ l/ p- _- c: s# q9 w
. z+ u/ r9 K% ?, H* s; W
crt people [setup-turtles]
% q: J2 @) y: @! q% |
3 l; \" _  y2 Z6 U
reset-timer
7 x; t% Y) b4 J" S! `/ C5 }
8 Z7 C$ G( f# d/ t! I+ M, X0 g. _
poll-class
. F, R- a+ K5 j" p1 b' T

$ Z4 ?5 A" c/ r( A$ W6 ?$ P: f1 Gsetup-plots

/ C! T6 k2 u+ F# [7 A2 T
7 J6 U% k5 Q! k: q( _$ M& @do-plots

( n3 \; a8 @7 z$ eend, z, K4 s3 y& M4 }1 b5 A6 m4 a7 ^
1 ]. j: _$ N( F: B2 C. g1 ?3 Q( Y
to initialize-settings8 M* w5 m8 Z- F

7 A7 l" Q7 H# D2 Q* Tset global-reputation-list []

2 o+ f4 Y# D# O! W- n- N1 m1 T+ u+ v4 M5 H- l$ |( F* C6 g
set credibility-list n-values people [0.5]
1 S" C' Q% c" h
# y5 k+ a% a" z1 c6 @! ?$ _: l
set honest-service 0

: [' y2 y2 l8 D
3 a8 c% o3 u2 Mset unhonest-service 0
( O% f) t8 _, w! ~( h) ]3 B! D' D. s" O

5 `( Y$ u. z9 K/ p4 zset oscillation 0
3 y; s% q; o0 N  c) C$ n

% Z) I0 p( c, z( T( D1 \* z, vset rand-dynamic 0
* B2 C' x+ e6 D* `# ?' M( N8 _
end$ y- L9 H! Q) L5 D9 W
% l) U! R5 x2 I: ]) b+ v/ E
to setup-turtles $ |9 {+ s) n0 t, H, j
set shape "person"1 W& _, b( @3 q. A6 C- e
setxy random-xcor random-ycor; R; X* {/ h, y- g$ d
set trade-record-one []9 q' z& ]( |! c: G, a" o+ Y/ {

& U+ n5 ?. j( L% d* m/ jset trade-record-all n-values people [(list (? + 1) 0 0)]
" R+ s5 j, A6 R7 U$ ?) U

  i. W( j8 ~, U2 E( [5 A) K+ pset trade-record-current []2 c5 f9 Q' {+ T; W5 I
set credibility-receive []; u; R; {' v& }! }
set local-reputation 0.5
0 w5 _: W3 l) x. ]' x6 S% ?- Dset neighbor-total 0
+ f; \3 ^/ J' E8 Vset trade-times-total 0
% @4 ]/ D) l5 ~+ x. Iset trade-money-total 0! ]. z0 J7 l$ X/ n
set customer nobody
1 \7 j& J3 V' {# uset credibility-all n-values people [creat-credibility]* O  K2 f4 q; |* C9 X8 c/ X
set credibility n-values people [-1]
2 N# F! [4 |  W4 Oget-color- E: Q9 \9 F1 z& l% V) @
+ K8 D8 I& Y% K2 c. Y# `" z& P
end1 @! z. n/ A& u2 f) x

2 R1 G  b5 ?+ u/ l' J% ato-report creat-credibility8 J3 W8 d- t5 }$ L5 W# ]% B/ t
report n-values people [0.5]) }9 B2 \, j3 K  |7 l% V# i
end$ w  a$ m" _; \' Z
  V" H8 |9 p2 A8 g! d& C" h
to setup-plots
+ f* b* {& }' l! x( }6 h
9 d1 q. Q: }& s+ a% Z  g- Sset xmax 30

" V: m. Z( Y' |$ ?  t7 E6 M" d" I7 V; H! W0 @+ y7 y" \; h5 |) B; M
set ymax 1.0
* W) K- g8 I, G9 ^: V

2 g  k% @1 R& A; D5 Q& e! Fclear-all-plots

! e9 H! }/ {; [" B+ X  H  A6 I9 t- @4 `  A. |
setup-plot1
0 ?3 C5 M# b( [0 T: H6 \! A
' ^8 D: C3 k: U4 z
setup-plot2
' a% d2 [$ q# V" V

  [3 C7 ]1 Q0 |, [/ I  Qsetup-plot3

) [& u7 E4 v( M5 J# x, uend% U& O. P0 u9 L4 R# r: m

- l7 ^2 [( [: c" O$ i. S;;run time procedures
9 H# p( ]: f1 _  I1 K! e
7 W* {& j" h" O4 {& Xto go: w9 c* a9 H3 W; s) \/ T6 Y
- g+ E( B- L4 A0 d3 R
ask turtles [do-business]

( T0 B! X! W" l( N. v5 R: I! Qend
% C+ z  M+ k: D1 j+ d6 K
  P( n# v3 [  n0 \5 Gto do-business 5 ]1 \: V5 V1 ?

+ K. H7 p1 B# i3 _- ^, k- B6 V8 Z. q: ~, c# j( i; [8 I/ p
rt random 360

3 k6 U/ y$ I! S$ Y
+ W. k0 Z$ n2 [' j: d) I0 d6 Wfd 1
7 c* {! q, F% C" N/ I6 @0 R. b
  Q4 o: Z/ k& P
ifelse(other turtles-here != nobody)[
5 g+ J! u0 N( J8 H& ^/ K
2 z! c4 {6 Q. ]
set customer one-of other turtles-here
; O  J+ d; Y% b$ Y% r( a7 f

+ k/ I0 d$ {4 n& U;; set [customer] of customer myself

5 Q& C- h# N9 R/ f9 X$ h. g: t( U# N$ U# c* ]* y1 @
set [trade-record-one] of self item (([who] of customer) - 1)
8 P9 [1 \* K4 `# `6 U[trade-record-all]of self% ]9 L/ G* D3 U2 e- q  ]
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

; t4 m' ~# i7 r7 V5 i2 `
& x+ z7 q! g6 }  m: Vset [trade-record-one] of customer item (([who] of self) - 1)
$ B9 Q- G% s8 U# L8 u! T[trade-record-all]of customer
% @& a2 S3 U& P/ s9 h
5 P1 t8 ?% h( v8 `  k+ h; [* x
set [trade-record-one-len] of self length [trade-record-one] of self
  O! ^6 |& h# f: y
, S/ S( r. v1 }& p
set trade-record-current( list (timer) (random money-upper-limit))

0 Z% g5 Z/ l/ \& x% z2 n
8 h' v% j1 q3 dask self [do-trust]2 e. a  }; M6 Z: @8 V2 K$ c# _
;;
先求ij的信任度: b& ~9 k* I. f- v1 c6 \- H. ?
: `- p8 ^2 E" ]. g
if ([trust-ok] of self)
4 t/ G! P/ B2 V3 k* ?+ H7 `% H" z) @;;
根据ij的信任度来决定是否与j进行交易[# b" U/ E# F. W* }1 K4 \  T
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, ]! ]! P: ^# {2 J6 [- I. L, U" O% l! |7 Y* P8 X$ n, F7 }- c
[

- j' I% j" f+ @/ ]
8 |( @" ^7 g: Ado-trade

, M" e; ]5 E1 i" ]0 f$ U8 L, r0 o1 M0 \
update-credibility-ijl

9 u3 V, \7 l6 C0 Z: S( G/ z
2 I3 O4 z% s8 Iupdate-credibility-list  e) F5 ~3 c# q' ~5 W
8 L- }+ ]- m; M

) R/ O* |9 k2 |- p5 W% ^update-global-reputation-list
8 D1 l) \2 w" S" c# U/ Q
/ C4 \$ L% K# k3 I7 X
poll-class
. ]. f# L$ f# i' m

' `- T3 a3 E7 t. M" C$ oget-color

- }& S, B9 u+ G
" J# _, e6 E9 B]]/ `7 H6 l% I  s! l& ^1 A. r
' [8 q; T% s! j, ^, h9 C- p
;;
如果所得的信任度满足条件,则进行交易
# `0 W5 `4 P* x  R, f5 k) R* [! l& x. K4 R! i& b' w
[
  q$ F* B6 a2 J) c; _6 C/ H/ L$ \. s. r

0 T; V0 Y1 y: N4 H. m9 {9 zrt random 360
! X# i: B& L) b, }4 c/ Y

2 h$ W) h& l$ C/ ^fd 1
1 `+ n3 c9 Y. R) C# Z
  ?3 n0 @7 g# A1 H, c& `* n
]
9 o/ \! H8 v% I3 U+ N
. ~& s/ s# [( J( t! v3 u
end
  }( W4 e' Y# \) Q; H
/ W: N+ \+ U  L( b: G$ f7 `
to do-trust
  L. j- w: v, c1 t, M$ ]# tset trust-ok False; n- C4 S# }  ~

6 M& |: E  V+ M0 w- @2 ~) W
$ T# Z8 h9 |6 [! l. g. `' _
let max-trade-times 0: b, u& Z! d1 r6 ^0 J& G4 |
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' h5 R2 t/ H6 _0 y- p4 ~; t6 \. Qlet max-trade-money 0' n$ r  M: t/ H' o
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ y9 a( K, C9 [! x8 @7 w
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))  E& u8 R; [) N8 e9 X& c6 T3 `
! O2 z1 {1 y+ U( k
* z( c% f# L/ X* o4 \; f+ o+ ]
get-global-proportion( e  G* B7 M3 w; `
let trust-value1 Y  J/ @$ d4 R( d; U; J6 [
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)
# y$ i& M) P9 Z& ], \, p
if(trust-value > trade-trust-value)
, ?9 Z  g6 x. Y, ^! P- `[set trust-ok true]
: v0 A) w" s' {% [$ l4 g/ L8 Eend! ?4 _* a7 R( z: N! q' J; k/ a

2 ?. y2 d. Q: _" s$ u& eto get-global-proportion  o4 N( \  n; n
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 v$ W+ ^( Z0 C# W6 t[set global-proportion 0]
' {& c: S. B: \6 S[let i 0
/ D( O4 {* K; L6 }let sum-money 0
$ j8 G! x3 [. _  o) P2 q$ swhile[ i < people]
9 f% X( d. H8 X; H' h4 P[1 m5 _, F. \3 n& C
if( length (item i
) b& D. H+ _2 ~) [- _4 `3 X[trade-record-all] of customer) > 3 )

/ p. q7 Y7 I4 t8 a[, b' S( V2 K/ z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)); A1 j- B3 \8 j% R7 _
]- K/ g$ Q! {) b9 S1 I6 a
]
* b' @; P2 ^0 _1 i6 g. [0 ?0 tlet j 0. G# p: e7 q* o9 Y% B  D: t. c6 s
let note 0
) A- x5 b# I$ ~  [while[ j < people]
2 T, A: ~/ Z+ ?- G; F- k# K% x[0 B6 O) n# U1 U8 I* O
if( length (item i0 a0 C+ Q0 v' C, _" q
[trade-record-all] of customer) > 3 )

% \: W2 R7 d" A6 O" ]; o[  S& }. y0 c- D: `- s
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 B% Z+ B% B+ I) o, W  y4 o[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 P! d% k( S$ n  r; z- O2 N2 x[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  ?$ b  F& `9 `/ K1 M
]
$ B3 j# z9 L( |: ~! Y* v]
, f2 }, B$ e' \4 r3 A) sset global-proportion note6 {( v) ?) T0 M2 J' [+ Q) g( ]- u
]) M6 O4 G& N; L3 u8 G8 X1 _2 u
end* z& Q0 y8 @7 h) E, \3 U

/ p4 I! `4 r: @to do-trade$ ]" \7 K! ]5 u2 z1 S
;;
这个过程实际上是给双方作出评价的过程& B2 v, i1 S! o& s# X/ T7 A1 t
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 E* d- p* m2 C$ T
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 n$ O/ F( ^- o+ z# k9 U6 U5 q) E
set trade-record-current lput(timer) trade-record-current
6 y3 L& H& E5 p; B;;
评价时间+ B2 `. O- r" z; x' N7 r
ask myself [
: J, [8 W/ p5 @$ T1 X8 ?update-local-reputation* h6 D# b- E. I) B1 Z9 `, Y
set trade-record-current lput([local-reputation] of myself) trade-record-current
, U# O( S# p8 [# q; D) C0 g]+ x+ k1 N9 m( U8 ?% s  a
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' I8 S! b; |% F& |0 l% p  `! ]# n;;
将此次交易的记录加入到trade-record-one
. L+ R+ C0 U+ u+ E; j1 qset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). ], p: N4 p, J
let note (item 2 trade-record-current )5 `6 Y( M8 U2 J  a; m
set trade-record-current
5 `! c5 {) K- y% M) [(replace-item 2 trade-record-current (item 3 trade-record-current))

, J9 [( i: M9 v3 i" Q3 @set trade-record-current, P8 C( l9 U7 G% E
(replace-item 3 trade-record-current note)) E3 N! u8 ?* a4 J# ^' l) E5 a8 e

8 d* C, b2 o# @1 R
4 N2 x1 S; a4 P7 Y5 d- Z3 `! `% R; q: s
ask customer [
& r* b2 B7 I$ K2 F" Y0 ^, Pupdate-local-reputation
) P- i$ N0 ?& k" T* A5 E6 }) `* R) Cset trade-record-current
0 h1 R8 l7 Z& y+ J9 ^% t(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, w- j5 D" L0 X+ }]
- ?6 w2 B8 ]" g2 }9 w- {& ^" ?5 b3 V0 h

2 B/ O- f- v) L/ w6 A$ `  Nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer1 T8 {4 s5 o' c6 B
/ ?4 k, u8 i5 \  k( a
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! S$ `# ~  t3 A* l0 ~4 k1 Q;;
将此次交易的记录加入到customertrade-record-all! u$ h% a% z0 \* A
end
' l. y3 ], T6 c+ N% F) W7 k) O3 F
  i' I, w  A& q5 T3 h! vto update-local-reputation1 X: T! u0 P3 `; k' [
set [trade-record-one-len] of myself length [trade-record-one] of myself& h3 Z) w, }- [; c) h6 n8 C
% \& t; @  A/ ?7 H

: a$ F9 P. u* u4 y4 n) w" C$ G6 d9 q;;if [trade-record-one-len] of myself > 3

8 d2 H$ s" @3 w/ G% {% a1 Uupdate-neighbor-total& |& y" F/ a( u% q
;;
更新邻居节点的数目,在此进行, ?9 U7 W! k* ~8 F
let i 3
7 z0 z6 x0 }0 Jlet sum-time 0) z) V6 a; t3 f8 i/ p) l! Q0 B
while[i < [trade-record-one-len] of myself]
+ x9 \/ a0 c! e2 u  C[
2 G/ c' [, t9 v- y9 ~3 Oset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 _3 \. D" ?" s6 k; Dset i& N4 U5 P+ M" c3 |$ M9 H
( i + 1)

' Y. U' I" f* j& B]: p. }* y* G) o: t* D4 R
let j 3
2 g, ]( c3 t. F% Ylet sum-money 0. t5 q+ B3 v! e2 b! O: g! n7 k& i
while[j < [trade-record-one-len] of myself]
5 U3 e* G% V, F' b[1 _) n) G# G1 y7 p- Z) h
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)
! _% k. Z# v' ?1 p) a  _# O7 }" ?set j
  f" `2 M1 b  \2 ~8 d: ^* `) h( j + 1)
+ d+ P: a4 A& M* ?
]' C) R8 ^1 D. B
let k 3; }# X) D6 r+ w; a# F  @
let power 0
; u3 d, |$ i% r  [$ _/ G' Glet local 03 f& M1 L8 B2 x4 H6 v
while [k <[trade-record-one-len] of myself]2 N& M$ m% G, |. `' x" t# q, I
[& I6 U! K* }' H. m5 v
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) 5 w- g; }( v; {  m) r1 ^
set k (k + 1)
5 s, @# ?  S5 F5 Y5 v9 Q: O]
2 A6 s9 g2 I* G! e+ lset [local-reputation] of myself (local)
; a( C7 R6 v5 `end( V/ H0 K/ F4 w# \: ]2 q6 T/ [

# V/ [) X2 I3 L- |to update-neighbor-total4 X+ ]$ |' D9 i9 I6 {( J

. G7 a( C; q3 k. k. f& _if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( R3 K4 P1 L$ m, ~9 o0 S  Y1 _
4 O, E3 k4 @3 q; w  ~

& B' F: S# H2 W/ c4 k  F* Kend9 P, ]/ u/ S' O- V: G- \8 h

, Y& ~& L$ w0 e) q$ k0 k% qto update-credibility-ijl " _, I+ f  |5 G+ i7 V& R( G
: k5 j' A" M% w$ m5 L( D$ d% c
;;
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。: r% N) ?" y/ L5 N1 g5 v
let l 0
" P( L) o# d- C* q' L; Xwhile[ l < people ]4 }9 ~& I! G* o" r- ]
;;
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
9 u" Y9 F+ }6 P  }2 t, D4 ^, y[
9 R, b- p1 P7 K5 B- mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, Z' D, ?0 ~7 B- z- @7 F8 Mif (trade-record-one-j-l-len > 3)
) A8 \* m1 E5 E( f7 W[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
+ B6 t( ~2 \5 Xlet i 3! R6 W% G- m) u2 h( @8 |+ ^
let sum-time 0. z$ C5 W- b, A7 u) }" j
while[i < trade-record-one-len]
3 j3 ^& G+ h" M& [% K  |9 I[  D5 R# q$ }& @, Y. P  H
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )- c  @8 L' x/ s. x
set i
1 ]( m& {6 Y* ~. N5 t( i + 1)
+ x  W2 ]/ k* F6 q; y6 ?. {6 H' s, I
]
' n) \- \" k4 b$ N. u# W5 b% dlet credibility-i-j-l 0
# A& r  n2 ~* [* Q& d# [;;i
评价(jjl的评价); z! `% ]& E2 i: x! I4 q1 D; P+ r4 H0 ]
let j 30 n( h6 y; F- e2 Z% v, z
let k 46 W% E* I6 x/ O
while[j < trade-record-one-len]
0 Z3 P! z9 Y0 C' n1 y[+ ?3 t  T$ K% ~/ Y. y# b
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
; f# B& y% @2 t  Gset 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)
' L) ?' n" g4 f" Xset j8 V+ t9 O- H9 O* k- D4 o
( j + 1)
! o) H. `* B( H) i
]
9 A+ w( g' i/ }. X  k9 L! rset [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 ))
7 M& I1 T3 @+ }( C: I% P9 s3 [6 ]& F1 j' P# ~  ~
9 U1 Y" ?5 Z8 i# @) }' t: d" [
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 @2 t( [% w: ?( K& ?
;;
及时更新il的评价质量的评价
' v7 H  X% I$ m/ H4 ]set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( {% _! I7 {3 s9 M/ ]set l (l + 1)8 B% V* W9 E, j* D3 l3 J
]
" ^8 v3 ?: G0 m; ~) z& Bend
0 I: e9 @, N2 M2 m% ]6 f) y+ e+ s# S. S' }# k6 S0 h
to update-credibility-list- F* F2 t+ n7 o) F2 I
let i 0( l$ |( O4 M, K1 ]
while[i < people]4 B  ^9 f* m3 ~: _' U) N9 f; s
[( p6 d; R9 y: N  S
let j 07 P  }1 O- \# F$ T5 N0 L2 ^
let note 0; g/ [# s1 n% H, `
let k 0
- [2 |( Q$ Z4 V0 Z: F+ V3 B;;
计作出过评价的邻居节点的数目
( |* _% }3 [9 [) s6 U0 Dwhile[j < people]. q1 D4 T9 ?# ~, s* ?6 D5 _
[; i( s4 x; E3 K! M" Q. T4 A, j
if (item j( [credibility] of turtle (i + 1)) != -1)  M1 o9 B+ ]+ J6 R+ U' x8 w, {+ ^
;;
判断是否给本turtle的评价质量做出过评价的节点4 P0 I+ j( o! B* K) ~
[set note (note + item j ([credibility]of turtle (i + 1)))
# o$ g1 O8 {, F- Q2 I- P# y+ |5 W/ _;;*(exp (-(people - 2)))/(people - 2))]

2 h* j- Y4 }7 G- O5 cset k (k + 1)0 K. Z/ S# b& A) M: Z
]
8 I# m: x( F6 X# \set j (j + 1)$ [3 o# C5 t  d) T
], [3 u( S% @# W! s/ Q7 y8 b
set note (note *(exp (- (1 / k)))/ k)
' d" A' G; [' U$ a' qset credibility-list (replace-item i credibility-list note)5 b" a0 v6 |1 X2 w8 v: |8 L% c4 q
set i (i + 1)/ H6 C: M- m6 P+ `
]
( _( f& B* u1 I0 v# _  Pend
! C5 @9 x' \$ H7 t9 M7 K& r! K8 |9 p0 O' V7 Z9 u$ u. W
to update-global-reputation-list
3 @& M. A& c% L  k9 e% E& A8 Blet j 0, i2 f) O9 P1 i5 S  K% D; m* i4 W7 @' W
while[j < people]
. S5 R( h1 {: }. Y6 z6 j) Z: r; D[! w$ q. V( `* N/ [+ f) q) I& `  ?1 G
let new 0
1 C  k4 Q5 ]- a;;
暂存新的一个全局声誉
  H9 y& {1 i: Y' ^- Plet i 0" D, M8 u) _% z. W% u3 G! p: x$ y
let sum-money 0
( Y  m1 x0 R: F2 {. V5 G! wlet credibility-money 0
" j1 B0 n0 r7 F0 B3 xwhile [i < people]
- L1 b5 _0 @  H# E9 s[5 [/ L6 j4 v9 _4 M9 a6 i+ T
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 o" n, A$ f4 H2 I. [  d9 B7 R& j
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ E  x  g7 y& L" _, o
set i (i + 1)& O9 ?# A# O0 ^6 l( |# O6 M
]
& w( O& Z! i% }. d6 @, Flet k 0; b, S6 S) ~; {/ K% n# z+ @; X
let new1 0
' g/ O/ Q4 F% bwhile [k < people]8 ?6 f: U$ |6 g. }
[! [! A) z3 E) b& r; }
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)) P: y9 H  d( |# y
set k (k + 1)
* s% A+ n. K- o& i: q. S]
( `! Q) v* T& V) x8 q0 I8 Cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" C3 j$ l. H% E/ r2 bset global-reputation-list (replace-item j global-reputation-list new)
/ y) z* e6 D6 o$ j$ c- Uset j (j + 1), j/ @3 f0 E3 v; X' c( v
]
8 N( c" y: T1 d3 Y9 Iend
9 M; t' O0 k; t. S
# h) r. i! i" D5 H
. p, w4 I3 H- f" A) ?" O/ d! N* D5 P9 R( I1 q0 D  w
to get-color7 g: ^: P* V/ M4 E# \" a' N' r' n

% [6 R  r7 z, W1 e. pset color blue

5 l- r; f$ C4 Z! v/ p6 i* V% T/ mend
. o2 Q8 J8 Y  K" n* d* t" U; v5 C, v0 H9 N8 z* w- E3 E' p: E
to poll-class
6 }/ ^2 z- t% F& [end% X& P3 |" J: p* x8 ~
3 ^! o' K5 G+ Q. F
to setup-plot1
- F7 U  F) g! v( l* x  w9 r! e6 T2 C2 L9 }
set-current-plot "Trends-of-Local-reputation"
9 J+ p0 g( m" z$ G& V) `

; W% F; P) @9 n9 x* vset-plot-x-range 0 xmax
+ N& Z1 ?6 X4 a" m" N
& f8 t+ m& ?, t
set-plot-y-range 0.0 ymax

5 P( x% R7 A& ^& m1 t9 P" qend9 {  I2 h7 E' p3 h. A

  o/ _1 u1 W( H! dto setup-plot2
3 ~+ q- S) |& c" U1 k% s4 C- C! J4 n* e' E7 s4 X0 p
set-current-plot "Trends-of-global-reputation"

1 [- L0 M* S' }5 b! D; [2 h
5 D% B: y  t% B/ cset-plot-x-range 0 xmax

# s! `/ y  i6 j; _% u  b  s4 X+ T% v9 |% Q& L! I0 f
set-plot-y-range 0.0 ymax

7 }; d" \* I& @0 U0 J% k1 @end
( M: E" i, I( W+ K! H) `
% E' _* O2 t6 W- S' Ato setup-plot3, k: `% d* o) q+ V2 V% H

0 W# V6 `# M, f5 b, k& l. N" tset-current-plot "Trends-of-credibility"
0 T' V8 c4 W' y- W5 V: r4 O

( q/ {: F- k& y7 f5 hset-plot-x-range 0 xmax
: w& g* O- M: D: T( j
2 P  u/ e, ]( s% u' z
set-plot-y-range 0.0 ymax

: `/ x$ ?; ?8 b$ y: Q' Hend$ N; y( m' \( B  L
0 {: q6 w" J' z: F6 G( g: H3 ]' I( x
to do-plots$ o/ S3 h' j% V1 F
set-current-plot "Trends-of-Local-reputation"5 q# U, O5 e) a  B5 O7 B
set-current-plot-pen "Honest service"' y- j6 m3 v2 u0 N7 A
end
, H) i2 C, w% C  @. ~( x+ P6 U" a
[ 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.
$ U1 z" i. [- D/ O- }% D. F% M* t& Z+ i
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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