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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:( h$ W( j9 I' N! y" v( A: E
to do-business
: y6 {/ c6 w4 X2 p3 Z2 L# \ rt random 360' \. |5 L. v$ ^- u2 O# z* I0 i  K
fd 1$ a+ E4 _9 o- v
ifelse(other turtles-here != nobody)[+ [# D- R, l! B
   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.
$ W, d2 z' I5 h- J8 n$ a8 L) G; o7 e; u   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    % b. ?/ l% h+ @% D  Q
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  V, \2 ]6 i) d3 Q: x   set [trade-record-one-len] of self length [trade-record-one] of self; `, f& r7 c: T3 @2 d& Z! o- o+ ^
   set trade-record-current( list (timer) (random money-upper-limit))! {& S( j2 y$ A0 N# R
* q/ M6 y, L* a, b8 l
问题的提示如下:
+ ^3 C, {: l, s) s/ _2 i6 t$ i5 [' L8 ^$ ^
error while turtle 50 running OF in procedure DO-BUSINESS
9 n8 f6 ^) P8 ]+ l. b  called by procedure GO/ P# ^8 c! t4 R  V& }
OF expected input to be a turtle agentset or turtle but got NOBODY instead.9 S. }: T8 \1 @7 Q% {6 w, u# j% }
(halted running of go)
8 a7 B8 [1 g: ~/ L6 O, n* N
4 }/ \7 S5 @* E  z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~~
+ }0 S( \1 P  t* d9 g9 F" t3 J- j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$ C1 a, k. d0 f9 `& x- o2 {
globals[3 o! D1 S% |' t+ R: L0 H5 j- T
xmax0 w& }1 z- j! ?9 ]8 r/ t" d! z
ymax
3 j: h9 S/ ?/ G) [9 x; N9 oglobal-reputation-list' P; E' H4 A& c5 y! C0 H& W

! l" v/ C0 z$ {3 D: ~;;
每一个turtle的全局声誉都存在此LIST" g, l" ?; y, r; B9 g+ K: L; p7 t
credibility-list; H* U5 q- e5 d) ?6 w1 E" N  J
;;
每一个turtle的评价可信度% a( z9 y( h* J7 e  j  @
honest-service
. `, N/ D# ?2 }/ e8 Junhonest-service
# X5 w4 q/ J5 m6 h. yoscillation
0 {+ V1 a* T. @* f: d  T% Prand-dynamic# a' i9 D. M$ \  d% ?( W
]
& L/ Y8 O" B; b) L/ o) ~& A  a7 ?0 m6 L: u8 |( E
turtles-own[% [: \: R& p6 \/ i5 X! o- C
trade-record-all
/ |3 m- l# z. x, {! y& _8 U- I;;a list of lists,
trade-record-one组成
+ q5 ]! l. l$ w; ptrade-record-one6 r. Z1 a( A- ]1 d: F6 ?; 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2 @# S( t; H5 d/ W7 S  i

$ K4 {6 O& P2 y;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
! I% k$ `- D& q. {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]) H0 @) o7 x, Y+ `9 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
* q4 E' f7 Z6 T+ y2 ]! T7 J( Qneighbor-total
7 r/ q8 S  _, Q1 ~  K% b;;
记录该turtle的邻居节点的数目
1 u% N/ F2 a1 R" O4 U! A1 Ctrade-time
0 O. l/ F$ K% p;;
当前发生交易的turtle的交易时间( L( }- T) G) }! h3 F8 f
appraise-give+ R, D( z$ X# n: z% j# o" x2 {
;;
当前发生交易时给出的评价* Y8 P  Y) h" y2 h& u% c% @5 h
appraise-receive' V/ o# o% p  d2 ]0 t
;;
当前发生交易时收到的评价- E# y: t9 H' A7 X) R7 g. x) ?
appraise-time; X; a5 F# u: t# q6 C
;;
当前发生交易时的评价时间
) b' Q- d9 B: c# V( mlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
' |' [, e, b. T3 z& q7 ktrade-times-total$ `  ~3 [/ _: d$ m+ }
;;
与当前turtle的交易总次数
5 n  ?# @4 Z* Z0 a% {7 A4 B2 [/ Vtrade-money-total! j  c9 M2 ?6 a0 R) f0 Y
;;
与当前turtle的交易总金额0 g: w2 t% X) C: y" C4 L8 [  d
local-reputation9 p- o; G- L+ Z3 x' b, Y. d$ A& w" M
global-reputation
0 {# ~# o' `6 \8 T9 ^  h; |, ^credibility
! Q4 q, u( V9 I& U, K6 M7 O/ l;;
评价可信度,每次交易后都需要更新
, ]; F4 A! H( n- r; g) g' I, mcredibility-all
+ p( A& x( M0 H, f! |;;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; W+ `- I; R5 s  \+ b+ a
. e9 C9 i1 U+ o. ^& a9 K
;;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0.56 f5 }6 W& }, r7 I* A$ [9 c; H
credibility-one
/ U! W+ Y) U! I; V) Y, i  P6 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
8 m" M7 a$ F9 Q! n! bglobal-proportion
5 u' |9 ?+ c" ^" k3 I* jcustomer" R* k6 a' P5 H
customer-no0 G8 P, [( V! j3 C' M+ W! O- Z
trust-ok
: U% B" W$ o/ M  j* w) qtrade-record-one-len;;trade-record-one的长度
9 g7 E3 B  [0 T' T]6 K' Q7 o+ l/ S) e" ]4 |$ m; \
9 K1 t" N+ Q( ?! W
;;setup procedure) H9 M5 j3 s. w6 M# E

$ f. I* ~6 V- [; x2 Vto setup
' X, A" H$ f: u7 {! Y3 e+ F7 l5 A. @/ |9 B3 Z
ca
3 ~/ G9 y4 h8 g/ P3 b' M3 Z
' M0 S! y& w5 m) v4 P
initialize-settings
& F* Z) v, V$ A- C; s; P
; q* U, G, Z; r2 m$ n# e
crt people [setup-turtles]
1 _- {! T2 e' {# W( H

$ C# ~0 }4 K' M- M6 Vreset-timer

% e2 t* R! _# w2 U* g* w
4 `+ o2 o) H) xpoll-class

# Z- `5 Y7 U4 k
, e; W' u+ y5 vsetup-plots

5 \; L9 W! Z' ~" [9 T. F2 ]( v7 _; m( q, B
do-plots
' \/ L) E4 {$ v4 A0 |8 {- `
end
3 G8 Z2 Y% f/ [6 f9 P7 L) Z: _6 k0 h5 J/ h; W; K6 t
to initialize-settings
, _9 C2 D5 Q( P3 N# T' y& S" C6 ]0 n* y1 {: ?5 R
set global-reputation-list []

# g/ J9 ]4 }' l3 ^1 a/ z
. U5 ]0 ?* F: M+ p7 Iset credibility-list n-values people [0.5]
& g3 P# o- }" J) t& T
7 q. \& k. u; Q8 |7 _* ]: n
set honest-service 0
$ H9 q8 F$ S/ Y; C
- x1 [8 i( y) {. ^1 _
set unhonest-service 0

) c4 d' @/ E) B8 q* Q  ^- O% G+ `; l! j/ D
set oscillation 0
( l5 r3 V; P7 q9 P7 o
( L' \1 H: n2 M6 w5 n4 w
set rand-dynamic 0

- L5 @8 p5 l1 g6 J0 W; hend
% o* K$ D5 E. `0 ^& d% h
; o, J- ]) @" o4 r6 \- a  Fto setup-turtles
3 ]. N3 f8 h- l$ s, `set shape "person"+ b2 u' y! d6 {
setxy random-xcor random-ycor
6 b2 N+ Y4 p9 v9 w* p. c: P' x3 P* F3 vset trade-record-one []
" h, [1 N' v( v
! V0 j& S/ i0 T
set trade-record-all n-values people [(list (? + 1) 0 0)] 5 o' b6 p* N# S# k0 s
7 z  d, [4 p# T
set trade-record-current []
& j1 y0 P. p' {set credibility-receive []
' P  o  M# O! M  }0 eset local-reputation 0.5
0 W6 _: L3 E" M" D0 n+ u+ @% K% Gset neighbor-total 0
, f! D& t+ z+ K$ }, n% nset trade-times-total 0
$ {0 f4 V* l' m5 b( D7 a* K4 b9 j( t2 yset trade-money-total 0
( N3 u" B! E, f7 @7 P0 e; O9 J3 yset customer nobody
; j9 i+ V9 p6 Z# c6 Y$ s8 ?& ?9 ^- Yset credibility-all n-values people [creat-credibility]
% a) U4 ]) }, H: }* Q- Jset credibility n-values people [-1]
1 G0 N: K# m1 L# |" v+ ]get-color+ E) D5 v) E1 O' f/ N  B- z; O9 E  ^

' Y: V# q9 k0 w& I3 kend% X, q; j! i- N' F& I

' I1 h3 b$ X6 Vto-report creat-credibility
7 X( U0 b1 i- Q" H4 ^& u& Jreport n-values people [0.5]; n# j. z' J6 C; C% i
end$ E( C& E- Q7 M9 v. W

5 y. G2 Y7 {8 L6 ato setup-plots( |. [5 c' C# Y" E

. d, {; ?9 E; q% ^1 a( aset xmax 30
. ?4 G* H) K! n8 ^$ B! c' O
. B7 V9 y2 N8 q( T0 x
set ymax 1.0

4 I# R8 \" L; \
: Y3 j3 N* o4 e5 y7 uclear-all-plots
" q4 i- U5 v0 }. ?) V/ A1 S

. \/ ?. }) @. G! S, f9 i8 v5 jsetup-plot1
5 Y5 z! u, p+ u8 a6 o

; a4 H5 z4 j4 K, o4 V) Csetup-plot2

9 U& s8 s1 g3 F: C8 |( F$ U. a3 [8 s4 Q- ?  I
setup-plot3
+ k* s& u1 r6 n: }! M" D: z4 i* c& I
end5 B6 f' e: y+ g. C/ {+ [
% G) Z* R* r! i3 v. _  T
;;run time procedures
+ }1 a6 T5 I: ^: e' c; z, Y
, r8 V9 y- y6 V0 o5 {% |. Jto go
6 U/ ]2 y$ }- K5 F' U; @, X2 U9 ~6 H; f
ask turtles [do-business]

8 G* c+ E- x8 W! N/ }/ e7 oend
6 \; e$ w6 h( z7 y) D0 w; N+ o( m7 P# P$ Y
to do-business   B" n1 I$ Z: N' J
. G# A7 H  j! m  }
6 s$ E/ }7 g/ W  Z' m% f
rt random 360

9 i9 k9 R; T, ~# P7 G
9 o+ Q! B3 u% z/ w" H; t- nfd 1

( F! y  N/ f" P2 y2 N* i
/ ~6 i5 R* p9 {( R! uifelse(other turtles-here != nobody)[
2 E& f; F$ ~* a$ x. N" j' z0 f

8 r% Q0 g. e6 t& G3 n5 ~set customer one-of other turtles-here
9 G8 c! @4 Q# C. R/ [; F0 R

& q+ G% w, F' ~0 p1 J# b: D;; set [customer] of customer myself
4 N) i7 Y4 s/ g* o1 v2 u; P

4 O  \* l1 x& yset [trade-record-one] of self item (([who] of customer) - 1)# ^  P+ j  w2 m
[trade-record-all]of self
2 {  g8 f$ f- D! O9 k" O- {; z& {;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

# Q' p3 `* e" }, Q
$ d+ {0 e; ^* G8 J( W. uset [trade-record-one] of customer item (([who] of self) - 1)# v/ h0 o! q9 W
[trade-record-all]of customer

/ \) v7 `# K( b' D& o, R# p: w
set [trade-record-one-len] of self length [trade-record-one] of self
8 a. D  L  b; O2 F, Y' q0 ^
9 s) z, H& r# \. [9 D' X  M
set trade-record-current( list (timer) (random money-upper-limit))

2 f& h- ?1 m7 Q! b: d; `" V) D! d, E0 A+ |2 B( g: p
ask self [do-trust]) O, G% Y, h" a1 v+ r4 G6 Q
;;
先求ij的信任度" i4 W7 Y# ~0 ?3 ?. |
% f: @& x2 \4 |3 Z/ V6 a* j
if ([trust-ok] of self)" M- s. W1 `" l* U3 F6 W
;;
根据ij的信任度来决定是否与j进行交易[
+ q) G4 ^0 L( a% Fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself/ S# P/ `4 h, Z( F( f6 n# J- Z

4 J; F+ P( C) {6 k- W[
$ Z" [: G( E9 ?. Q# Z8 \
8 u/ u; l0 f- N1 W0 X
do-trade
' K( K" O8 I4 I

5 l, f7 o6 x3 r# U3 q- J  j! S. S2 cupdate-credibility-ijl
! }( u7 o2 d# {& C' N$ D

+ s( S$ b4 g8 [update-credibility-list0 G5 N) |( ]$ G
5 E2 v" z/ h7 m

( H. R/ Q, s# z2 q# C4 d+ iupdate-global-reputation-list

" m3 k# }$ i. f8 p2 w7 [' d# _4 r$ k( m% r2 @" T9 C- Y! Y9 f
poll-class

0 C, O0 N/ U0 |) `! o+ }
" D* i9 Q( h5 Q9 f8 E+ n0 lget-color

  ~, k) ]; L2 P6 v# t
/ \! A+ B- n% a+ V]]
- z" t7 f' q3 X9 \. v/ I9 w' |
# m" T& d6 z- t;;
如果所得的信任度满足条件,则进行交易* t0 @: P; i8 x/ \- O% A1 O

. w" U& |* W9 z. u" w$ g[

: ~: y5 c* j2 x' ~. ^/ ^  D' \9 X* S6 H* M' ?! O3 `* }
rt random 360
: e4 d+ T. ^8 a$ `7 E: f) M  n" Z

% c6 l- L1 Y3 Q( U+ o( ]" u+ ~fd 1
* ~1 F, O" ]1 a! V5 s$ C

- x6 Y2 y' L' f; U+ G' p- i# v' n]
: u7 M5 x7 K- w$ i) L2 E5 R6 |  q
5 P4 ]; N5 D- N
end

/ r- n3 E+ V- `5 T8 ~( k+ N) @6 ?' ?! J
to do-trust
; Y$ r* I9 h# oset trust-ok False# A' w5 l# E" V. J
+ L7 Y0 H+ P% o) c
3 s0 o0 i, }- K2 j; e6 y# H
let max-trade-times 0+ P2 g, n! B/ u' ^3 x
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 l- r) q" ?1 w& f- }' c7 xlet max-trade-money 0. B6 G# v$ `  D: Z* y$ M8 G0 l
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 X: U! \% W  }6 |4 n" }4 c( g
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
' {& \% h9 C. P5 W+ |( O0 T4 k% `: n2 J1 n2 @; ]
8 \) D% Q: x5 J
get-global-proportion
' t# |) i1 {9 q) @let trust-value# ^1 |5 H% u5 a& {1 }7 y
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)

! ~2 x! r' C# Y6 l! J6 [. d! |if(trust-value > trade-trust-value)
2 m. R$ |7 s' N* q+ v[set trust-ok true]& H6 N, r8 ]1 f0 |8 x
end+ D8 a4 Q) u1 O% c' ?

" n3 J: d6 m5 M3 \7 \to get-global-proportion
5 W8 h1 ]9 `5 o. `ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): i9 w: l  I. L$ o, n9 E
[set global-proportion 0]
) b* x% w* m/ a% M; X- ^[let i 0+ L4 v; \& a! [" `3 A! P8 y3 `
let sum-money 0; |" E  T  e5 P+ t
while[ i < people]
, S+ e  P) I. F3 n. Y7 {[
( a8 N9 z* }: X0 k) Zif( length (item i/ ~7 P1 U  e6 t+ [0 X" D) m% z* Z: E
[trade-record-all] of customer) > 3 )
0 T& W* b) |- {9 @1 y0 e) S' \7 {
[
" V- J* N  ^: p. s; ^5 K$ N+ z% Oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 G' N3 @" }, v* a
]
2 `* V0 d: K) E! [( {]2 S- U- d1 x# J1 f
let j 0& z4 }: G) ^. v
let note 0, m( [3 H0 Z( l4 x; l
while[ j < people]
0 n0 o/ y+ I, L- z4 o3 Y[) A$ k6 @% d8 m: L
if( length (item i' }; _9 C+ u# U. j) j4 f2 z- @
[trade-record-all] of customer) > 3 )

/ J. _+ N  `! U8 H9 R[
) V2 ?1 W+ k" x8 F) Y" f: eifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)& i- _; A" u2 T4 c' i( |" f
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 I  M1 M5 F9 v/ E* _' T7 C: H/ C1 W
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 }& _* L( d1 x+ G]9 z- d9 a7 l) v5 A$ M/ X: A
]
4 [3 Y$ e5 D7 e6 k* J  Oset global-proportion note
2 g5 c( {2 Q' H]1 V4 N4 H- v# U# O6 ^1 f
end
8 x- q7 j' N, `. v- B- ~# \# s+ a% G! F; E6 q
to do-trade
; ?  }5 T( M6 i9 K( U;;
这个过程实际上是给双方作出评价的过程
0 g) p" \( N2 j7 z  Kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 O  W% v: G4 P) x. h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 K; e+ e: j6 E  a3 kset trade-record-current lput(timer) trade-record-current! Y7 C+ e5 G3 H, K9 K. s
;;
评价时间
9 M. l4 L: F! [- v  Zask myself [
' X8 U+ O3 p. m" O" ]4 x# k" O7 B  kupdate-local-reputation1 T( A! R8 f4 T! k
set trade-record-current lput([local-reputation] of myself) trade-record-current
+ Z* F1 X( u( j6 |; h0 G  g]) c1 M- A" o/ x" a
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ M. x( M- M' n( O$ G2 _, N, d# Y6 `
;;
将此次交易的记录加入到trade-record-one- ]+ P3 k7 C7 `- U& V
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 h" ?( e; U# P5 g- A3 m" ]1 elet note (item 2 trade-record-current )
; A- s, x7 m9 D' Rset trade-record-current1 Q5 Y9 _/ p" c5 [0 j8 s. w' m
(replace-item 2 trade-record-current (item 3 trade-record-current))
/ R9 j. x( a3 Y6 P! V- M
set trade-record-current
9 v! m& J8 X4 L' L(replace-item 3 trade-record-current note)* x* Y5 {5 ^* U4 Z* @) n

" [- ^$ `8 e& L* h: ~* h) H5 w! C5 z

3 k& M/ [, H2 iask customer [& b7 a0 a7 _  b, q) L
update-local-reputation' t) F; U; x6 ?& S' I2 E& ]* H# K
set trade-record-current# J" m. |8 m( h; y% K
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  x) J0 T, m- ?4 j" C% N]
9 C" V& i/ ^) Q
3 z0 ~8 B% ^0 w
( Z9 V/ F. `$ r# O; E
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  c7 [4 |: U* M* e  S+ ~

9 @' e6 L4 y. b4 y% Q4 ^  T1 jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)). J8 y* t0 D3 d9 m
;;
将此次交易的记录加入到customertrade-record-all! R9 c; N- P: f2 [8 ^
end5 M3 ?, ]/ O" h" G
7 i. I. q7 z, k1 [8 o( T: E
to update-local-reputation+ E& M/ i! Q6 l/ W% E# \8 c
set [trade-record-one-len] of myself length [trade-record-one] of myself; F: g' P3 y4 A  P
) v' [0 o0 `; W# s4 {

9 v7 S  E6 n* [( ^;;if [trade-record-one-len] of myself > 3

* a' ]; j$ Z' uupdate-neighbor-total
0 l4 J! C; o3 R8 q4 a( y: i7 A6 N+ o  b;;
更新邻居节点的数目,在此进行) B/ Y" u7 Q1 p+ F( Z
let i 30 b% y' P; y7 g  Z% j
let sum-time 0& u& J3 Z, z2 v0 y( F7 w
while[i < [trade-record-one-len] of myself]
  f3 n6 r, {! o: _; F. x4 i5 A[
5 c7 s3 U, E: h8 Vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- V; b: ?# Z* m: G( l
set i
) }" P" N7 _/ h, p- t6 o( i + 1)
9 Y+ u. ^2 w& H, ]3 ^
]
( F( h/ b5 K) }8 nlet j 3
+ c' h5 U2 J* X3 a$ Hlet sum-money 0. l0 R4 }4 G$ s/ r% F& Z- P
while[j < [trade-record-one-len] of myself]
% q* B8 Y2 W/ Q% t) A[
( J( P: s( j# s/ [: {( P& S; Nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)$ o% {6 l& |: m) }8 N: Q% k5 A$ P* k8 n
set j
+ \: p9 z" H4 T# [' G( j + 1)

' h1 Q+ e' T. f) K0 i  Q]0 r& s4 ~, z4 _* A5 I
let k 3
& I/ Z$ c9 V: ]/ U, w: Z  l2 ~let power 0
  f; M4 |) C4 T" llet local 0
3 s4 U# o$ U- Dwhile [k <[trade-record-one-len] of myself]& D. L! }% c4 Q; H1 z5 K
[, T9 y7 N( m4 b
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)
. O. X. R  ~8 o% fset k (k + 1)0 ~% O, l/ @" W+ r" ^3 T6 _6 E
]
- `& Q. a1 I$ c* o! u7 \' Cset [local-reputation] of myself (local)  [: V% o8 u- A/ Q2 b/ A
end
4 v. G. Z  K4 [: o' s; k8 Q
) t$ B4 J  \- |8 wto update-neighbor-total
, y" o5 G% g9 L# F9 \% [4 t3 `  v  x" x2 g" V, I1 J, M
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 p: ^& e; S8 a( L% T# J, x
- ?1 M4 R! X: d' W6 ?& o8 `' @

8 A; c+ |; {+ ], k6 K9 {end
! d: A7 K9 M# a$ d0 M
6 ]2 L4 r! L# o2 n- pto update-credibility-ijl " r9 p4 M1 f" F

" m! {" D0 t( X;;
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。8 K3 V% j, C- v, z6 u5 {6 Q
let l 0
& b8 X& g. q* `( Q  G/ qwhile[ l < people ]
7 d+ n0 z4 H8 H/ y4 u6 {" P;;
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
* m" ]8 S7 i# p, ?! o( l- }% v[. x! ~1 c+ Q1 z* U$ t$ E
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 |3 g7 a2 V0 k
if (trade-record-one-j-l-len > 3)
% k: j. E& g/ [/ |- ^, R* K8 N$ A[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
' u  K8 ]- S4 ^) w  Xlet i 3
9 x9 h( q! e) g' qlet sum-time 0
+ G# D5 ^% |8 A; ?9 Ewhile[i < trade-record-one-len]' m* o$ p( R7 B  Q5 ~
[
9 d, n% G3 V9 m) I2 V9 h9 bset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 C: ^- u4 o3 g- ]3 S9 Qset i& ?5 ]$ e' ^. S0 B2 v4 x
( i + 1)
% @1 E, \; D* ~
]. ~4 d* [. e/ _) N% X. T$ }
let credibility-i-j-l 0
  `, |3 b/ _& e9 h( y2 ];;i
评价(jjl的评价)
4 N* B& l5 n. j9 Tlet j 3
" f- k6 N( k# j$ ~# u: Z! R; S+ qlet k 41 z8 A1 ]" V" \  K  s1 A/ ~- s
while[j < trade-record-one-len]8 E% S1 V- e; v7 j) C4 x+ C
[" A" F3 N0 `2 [) H! l4 s- `
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2 b( [2 J) U( i+ W9 Z
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)7 E% {2 p9 N- O& ^
set j
, y% @4 j. }/ x" A8 b( j + 1)
; z& s+ v4 Z, E9 E1 Z, p
]
( X& b( V8 g$ a5 i9 m4 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 ))
& s- D$ ]0 n5 B2 y/ ?0 Q7 ~8 M
% m/ q! i# u: s+ P* v

# j8 X8 k8 D, E+ h( O+ U$ e' L: ]let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). x+ j1 N5 K9 |2 k% _% k: Q6 V! v
;;
及时更新il的评价质量的评价
4 o2 w* J' N7 F) Lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  R8 d- ^# W4 H3 m# F; r
set l (l + 1)
6 ?7 L( C4 G) _5 [( n/ G]( d1 P9 ?3 }6 v/ w+ V
end
+ M3 E- g+ B1 Q" S
: x2 p. l/ p3 m/ tto update-credibility-list% x8 |1 L/ o! h9 r* M- L$ J
let i 05 }, i; i( H9 \+ f. I8 Q! J
while[i < people]
) s5 ]5 e2 c% E" b, ~7 ?! Y% Y0 B[
. @( s4 w$ p( R" ?let j 0- L  X$ g" E1 j+ D8 L3 e9 `7 S& W
let note 0
' L0 A9 L# G$ [1 a4 @; C! |$ \' Wlet k 0
( P$ `8 _, a, V! a) c( P. |;;
计作出过评价的邻居节点的数目
, E3 z, p3 t) p+ v1 Iwhile[j < people]
3 E4 C; U/ G1 r3 {% w' d[
: N  g5 n" m# l8 P& sif (item j( [credibility] of turtle (i + 1)) != -1)
! Y, z7 E5 h7 R;;
判断是否给本turtle的评价质量做出过评价的节点# z  \) z, |( r8 n# R
[set note (note + item j ([credibility]of turtle (i + 1)))7 p/ K( B2 b+ c7 L. m$ p
;;*(exp (-(people - 2)))/(people - 2))]

% P6 h9 b$ Q3 j) A9 ?& Kset k (k + 1): R$ B2 j! I; Z9 R
]
9 `! T0 X/ c* c4 y/ S) Uset j (j + 1)" z' L+ X1 l. U4 ]) |: Y
]  a0 I" g5 d! ]8 Z; x$ x% V1 y; g; o$ ^
set note (note *(exp (- (1 / k)))/ k)
' m* m9 Y6 @- oset credibility-list (replace-item i credibility-list note)
  |0 i/ ~9 k5 N4 K' i' i& R3 Tset i (i + 1)
, }) G* ^: f4 r7 `  _( u3 Q9 ~]
9 }% W3 i# Z* j. L4 |. f9 L) Q: uend
& V0 o& E5 b; ^) E- M' U
! B: D7 d2 d9 s* D$ t% tto update-global-reputation-list8 H4 R) g' G4 k9 O
let j 0' O! _; `) z3 L. e
while[j < people]
% K! Q" x/ A- T" `- Y% S+ ?[2 {5 w+ L1 g8 k6 J4 x4 @: D
let new 0
, G1 A: Y# s) j8 I  |# M;;
暂存新的一个全局声誉
% n4 Y) J/ g; L( K1 qlet i 0/ V0 ]  g8 X( C  J+ [
let sum-money 0; ~* v$ @; B% n* `0 A% ^
let credibility-money 0
6 F- G, @% l1 X1 @2 _1 c" Y3 Owhile [i < people]
! n) x& f* b! y. Y% @& \$ q/ Z[
; l3 L; n+ Y3 a' T) @0 z/ N' z0 f# gset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
+ X, Y; |' w0 V8 qset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ k% h: Q& I+ w: u
set i (i + 1)3 L7 a' ~& \# z, ?1 m+ S/ T! L
]
( O1 c, Z% _: ?1 {0 o* s+ n* n4 Olet k 03 ?' E5 |& p- h+ b6 q5 E9 A0 T3 u
let new1 0& D5 ^% W7 S$ C: S
while [k < people]
; Y2 ^5 v6 J9 H" q- }[# K8 [3 e2 a; M1 k7 N
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)
8 O2 \: A3 E# d4 Z8 X0 aset k (k + 1)% Q$ a- X- @  Q( o1 w; D) N2 m
]
* F& Z$ T4 r/ @9 Hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, \% u1 M( W3 u, gset global-reputation-list (replace-item j global-reputation-list new)
9 h! D1 f* B  W- a7 z) S4 _set j (j + 1)1 j, S( A- B2 C* B8 N& G( ^
], f* i2 A) N; ~1 Y- h0 J
end6 U$ l; C" w/ l

& f2 W) ^6 L3 v2 A7 z+ I) w* c0 |) ?/ I; B  ^! J
4 c  E2 f/ A) ?& Z- Z
to get-color
" F! s9 Q8 S3 w; @& m0 U$ ]) J; l1 ~4 W' _: `7 A4 `5 ~/ t
set color blue

6 i! a. r8 `6 k( U. t8 T1 }6 P, L* P# Rend
) }" u9 k* k5 F* f- s
' m, t; R; J. ?4 X8 |( f# Ito poll-class" B1 \, R: w( Y
end
' M6 p: @. V: ^0 L$ P( ?( R# |. i- A% M" E
to setup-plot1
$ U) n7 q, _$ u; `
$ y/ k' K2 G3 A% L/ C2 K+ }7 yset-current-plot "Trends-of-Local-reputation"

) F: f/ P7 b9 k9 H8 T- {. _" G' F  ?% P
set-plot-x-range 0 xmax
3 z6 C0 y8 E7 {) x5 z& v

8 H- d% y) O( s$ J4 q$ |+ {/ Pset-plot-y-range 0.0 ymax
4 {; Q% P: t2 W- [+ p/ s& G
end
. \7 `, R1 e' b/ k' x/ ~: G* L. h8 ^! H# n) w" d. C
to setup-plot2
  U: b- {( x( j/ q; ]' D6 H* F0 ]8 G5 o  p6 w5 J
set-current-plot "Trends-of-global-reputation"

" p9 b4 b0 O/ t/ K' M* X) X# H! C6 F$ z$ `! F( w6 l" j0 |
set-plot-x-range 0 xmax
: j, c0 E7 e7 ^
6 u! d  d# f- \! ^1 ^3 u
set-plot-y-range 0.0 ymax

2 E4 p  R# i2 nend. h( ?/ L6 W0 a) C/ V5 O
* P1 ]( w% \3 q" M# F
to setup-plot3
+ i* H& Z8 e! N, H( W% K9 k+ I' E5 `$ [5 M# v. c8 P% }
set-current-plot "Trends-of-credibility"

3 d' ^8 o" W7 W2 o/ ?1 A, z# Z
/ }9 e. j) O5 Yset-plot-x-range 0 xmax
5 {5 `  U. r" z% z6 e7 x0 J# _2 [4 B

5 ~1 Y: u" ^3 J) S9 S; }* R8 gset-plot-y-range 0.0 ymax

1 @$ i4 f, @+ t- H0 Aend
4 W; M# e" r4 t* s, _  e
4 ]# D) I2 |/ G3 X' b+ g$ F) Oto do-plots% h" g8 O6 K3 H- L' M2 ], M) l
set-current-plot "Trends-of-Local-reputation"8 N9 ^- C: Y, T, y* S  H9 v
set-current-plot-pen "Honest service": S% U; G. s% O# L
end
4 @  t9 Y' N. d" s2 t, N& w6 g% \2 \! J+ o, @. z  K8 Z6 f. k
[ 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." _# F( |5 |; a- F2 V7 b

8 a2 L8 K2 l1 K这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

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

运行不了

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