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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:
5 _2 }! T- M' v) V2 L( o/ z. K6 ]4 m0 R. ito do-business
, d/ o5 f. L2 M9 ` rt random 360
5 Z; e7 ~0 i$ |( n( ]0 j fd 19 d) x# z2 C" z, {- I
ifelse(other turtles-here != nobody)[
+ W" Z2 w5 N7 z) T( ^0 M   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.
  U1 h- g& {& }& a# `: |   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 S/ B8 x' v3 t, p0 O   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 a' @3 L/ b& k; Z8 A( c   set [trade-record-one-len] of self length [trade-record-one] of self+ E8 g1 N8 A2 W8 A* V5 c. D
   set trade-record-current( list (timer) (random money-upper-limit))
8 d$ |9 r2 |) j! b, W8 @' ^3 b- j8 M
问题的提示如下:
' o0 Q7 V1 j2 O0 {
) p! E' \( [6 U, Gerror while turtle 50 running OF in procedure DO-BUSINESS
- j( W; r# ?# V1 I! h  called by procedure GO
! ^" o; l) O3 O7 bOF expected input to be a turtle agentset or turtle but got NOBODY instead.
+ V# h" Z  d: H' r! }
(halted running of go)
8 O3 X$ K% V5 h( B8 a% A
- |' t3 o. h2 a  W+ s. F4 v) 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~~9 B6 o5 B% ?' Y% F
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
! D0 ]8 G0 y5 |* g8 t. Kglobals[5 J2 E# f5 ^, [* b
xmax  ^; P5 _$ C4 U8 z1 V
ymax/ X8 C$ O: w) a. d
global-reputation-list
/ x- F* h- _6 j- {/ @, k4 q" m  f) K+ L( o6 U0 J" t
;;
每一个turtle的全局声誉都存在此LIST: I! k& Q1 C4 Z' ^
credibility-list0 U$ R2 l% j9 Y
;;
每一个turtle的评价可信度( q' `8 J# u1 x/ m/ S
honest-service
4 k2 ?5 n# P5 hunhonest-service
" R+ |  n' B( roscillation
6 x7 J/ w5 b* Urand-dynamic
3 P3 m0 X9 r# ?9 k, k6 K]
6 E5 A) ]0 K! \1 }2 f
/ g, y- ^3 i' d, s1 g; @* b, Hturtles-own[1 c% r/ V# v' O
trade-record-all; {" O1 h0 M* d2 w
;;a list of lists,
trade-record-one组成
$ u, k5 A$ \  ~  d" j$ k' ?trade-record-one
' u5 R) E7 E/ {;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- Z( m& P% V; V- A
) r: X# L: g7 j2 @
;;[
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]]
6 N# I3 \2 |0 O2 Qtrade-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]
2 Y6 C* D8 e# [3 k  kcredibility-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
1 B- k( W# K' c! [neighbor-total( v1 C  ]" d7 k2 J  G
;;
记录该turtle的邻居节点的数目
' M3 g5 {  m' {, x7 H8 F8 Y; ytrade-time8 @# J! Q- o, o& Q1 l
;;
当前发生交易的turtle的交易时间
1 Q7 }* h: m' X; \  L; kappraise-give
- R9 G; E5 {5 u, w% u$ l;;
当前发生交易时给出的评价
3 t' t1 ~  K$ j" y  dappraise-receive& p+ v( n- T% F- H
;;
当前发生交易时收到的评价7 n: D) m4 G$ g  _/ a
appraise-time
5 ?& p  ~( m  p; u$ u  e. C;;
当前发生交易时的评价时间
, _( ?1 f  Q$ Q  s% A8 xlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
: r$ m% A* F- c4 h; Etrade-times-total
8 G9 v8 `' p/ Z; O3 [2 M;;
与当前turtle的交易总次数1 @, |; p; |9 f+ f7 N, }4 Q7 S
trade-money-total
& m8 O+ k% {% X;;
与当前turtle的交易总金额
5 z  U% N* T- [8 I! t6 _  Plocal-reputation0 @9 o' o- W# V& `8 `/ E! u
global-reputation" N1 }! Z: a5 u# l( R. a
credibility
, U4 d+ U  l5 K3 [6 |' }9 ?;;
评价可信度,每次交易后都需要更新9 ^8 [2 M2 W2 a8 M
credibility-all
! d6 ^2 K2 Z' s;;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* m% b4 n" X3 [. P! n
7 g- m  O3 c) C  L; [
;;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
$ ?9 `, M& M# o. z1 g& l! l- @credibility-one+ ?( K! h# Z* n9 [
;;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: Z3 Z& n- A2 b8 A3 _: p
global-proportion
) k  ^9 x5 E1 O3 X( L  @customer
' t9 \; Z3 ~9 dcustomer-no
7 A0 J$ G( S( A4 _trust-ok/ q9 y" k7 l/ G7 {4 j
trade-record-one-len;;trade-record-one的长度; a. x2 B/ i# ]9 d# c7 [
]
3 T* L, Y. I& r& `" z! M  o: c. a1 N: B5 q
;;setup procedure
1 V1 P. l" s: C2 V) z6 i( x5 W) a. F" ~. Z
to setup
5 e/ |6 ?/ D' T$ F4 X; Y- [
4 q1 @$ ~' l' v: c% Vca
/ m4 U. q3 d- |' Z2 a( q9 n! E
: O9 F$ U' ~/ T& ^. i7 y8 `
initialize-settings

* W# G2 n* }- M# Y1 Q0 z3 e
, s  q$ m) }' i! a! `crt people [setup-turtles]
* O% x$ M5 @: n' W3 X/ d
$ O* N) Z+ b8 z' ~% d1 X" E4 G
reset-timer
: w4 J/ H) F6 L

/ M9 H$ G3 p$ y" N+ D" Upoll-class
+ T! B8 H. O  N8 A; B) v

# K6 h, }, N: `/ L. s' j* ?1 psetup-plots
. W4 n, C3 K' f
: z$ n: |1 ]0 x  `
do-plots
6 B1 S' j0 g) B$ H' V2 J+ Q
end) B8 D, N9 N- s
+ p. Z, S9 ?& X: M: t# ^' y3 g
to initialize-settings
# c  A0 \) y1 d1 b7 j8 b* A& m( v! y, q$ T) u% [( P% z! {/ F
set global-reputation-list []

, ?# j  F* m5 i7 I4 D4 }/ T. m* T* G) L! t* l  j$ M5 r
set credibility-list n-values people [0.5]

7 P" i' A' L- o+ Z" v. X+ e  L& e
set honest-service 0

' k2 h- e5 K. ?2 L" c5 y
* T! V& U1 y! _. `% d9 Jset unhonest-service 0
9 B6 R$ u. L5 u( y% v% i: H1 [: F

$ a" W2 E1 s! K- B7 m) ~set oscillation 0
/ y  U" I$ T& U" p, W2 Q5 l& F. \

, J' P6 h& g( Y4 O. j( dset rand-dynamic 0
' F' K, ^. I8 e! _
end9 E2 G/ k# c1 F# c4 w% d. d5 ?

- h/ D0 [( r! Ato setup-turtles . N) J% _4 q$ B  D- g
set shape "person"
" l# A" X! K" r) O! r8 v! dsetxy random-xcor random-ycor3 U: u  |0 i; V1 O1 h  Z" t5 X
set trade-record-one []
5 H* ?# `' }3 Z5 D
, Z0 [0 D# V! M. o% S
set trade-record-all n-values people [(list (? + 1) 0 0)] 9 j& r& t" I( l7 E: w. d
: J6 K* A$ s, y% i5 o
set trade-record-current []" u' ]6 r" E! S  x
set credibility-receive []
0 T* e7 A! t* X, ~8 `# y" y$ [set local-reputation 0.5
8 N# f. H- e7 U9 G5 H  d5 cset neighbor-total 0
$ [6 S, v& e; @7 aset trade-times-total 00 Q8 a# D; t* E" Q( ~! Y, c
set trade-money-total 0
( w- R  q; b' K: I  D2 hset customer nobody
, H# T6 ?% }5 E% z6 `  xset credibility-all n-values people [creat-credibility]
" Q/ r& Q  C& p" o* Gset credibility n-values people [-1]! }% o" p: t- b# j
get-color
7 L% L" s/ s5 o

7 U7 Z) i% _" m) W. k% g9 S5 |, mend6 S3 v1 F! a, \! `+ E

8 _2 ]. q0 w5 R& O, _to-report creat-credibility' c/ M9 z2 p$ {* @' }
report n-values people [0.5]2 |$ m4 r0 J- k7 P& f1 Z0 z  P, @
end0 D, @% m1 l4 r5 J

+ P) r- I+ u! r8 X( _& g+ u# fto setup-plots3 Y; w# w! J' W3 @, Y
* i4 n- S5 y; Z7 K; J, x
set xmax 30
0 c. R" W6 I: E- F

5 S) j5 x! H9 f# |! r! f9 D  [! Jset ymax 1.0

+ T! u0 Q4 p0 r* {+ t  [( e- _- ~3 N9 v+ N
clear-all-plots
) }* _4 D3 W& L2 u8 r- `; o, Z
7 r$ V) G' Z% m2 b! H! @
setup-plot1

9 [; n% F: a( [7 `# H8 _' a( P' u, K" j2 x5 L
setup-plot2
0 ?1 }. M, N8 q1 r1 a

2 T+ c+ G, O& A; v/ H2 y5 Y6 osetup-plot3
& z1 g! f5 m8 @; [7 q
end) n5 [2 q6 c6 `
( _" w- k5 f8 m; H. n1 S. X4 E$ V
;;run time procedures
1 t/ o3 x& {' w0 n* a% }
5 t* R2 y5 l! j4 W$ S" qto go
, @& w; D' u; W3 x9 j
+ q3 a- ^4 g4 n* V7 a2 P7 zask turtles [do-business]

7 k3 Q  }" U( U8 N3 i1 Kend
/ Z1 f# S: F9 Z' ~. z$ z, f4 Z9 B" A% f( p! Z) b7 f0 Z
to do-business ; P8 C+ ]8 O1 k

" h' W; O( z+ v5 Q% M6 t
8 f8 f. I3 C# ~7 Z) ?# |rt random 360

% D3 ]: A( W# H; }/ L5 E, k/ ~$ r" q' C
fd 1
+ T' R3 b+ v* s) r( G1 {6 e% o! P
; ~0 Z0 R- k: h5 b9 l* a# V
ifelse(other turtles-here != nobody)[
5 {$ r/ {4 i8 j; v* K7 j
+ K: w; N6 b% J- i' c
set customer one-of other turtles-here

6 s& T3 ?$ F0 ?7 p. W( Q" t! m! B6 F' M/ R
;; set [customer] of customer myself

1 {7 R: s! e5 [- U
5 j6 @$ h) u0 f9 _& f4 A, y: Cset [trade-record-one] of self item (([who] of customer) - 1)
& Z. f! Q5 f$ _4 I, e4 J, H[trade-record-all]of self
% Y' }$ }) ?& S) `# Y8 A;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" _. |% e  j  C& ^2 ^

+ `- h3 q/ @2 d" e  y! ?" f& L" |set [trade-record-one] of customer item (([who] of self) - 1)
2 z7 x+ J) K) T  t9 ?7 r[trade-record-all]of customer

+ z& b4 a$ g) G% E- j( p6 r- j. o* r! a0 ]
set [trade-record-one-len] of self length [trade-record-one] of self

, Q+ ^# A$ v8 f; i$ p4 X2 }0 ?* o1 V; \/ V
set trade-record-current( list (timer) (random money-upper-limit))
6 a+ ~# f; A' ]( ?) t8 A1 g

7 H) g3 @. l+ [- s; Task self [do-trust]
; ?' S* R2 B+ A' K% t;;
先求ij的信任度8 A; Y! `* x2 ]
0 y5 Y3 l: j# [% ?. R0 ^
if ([trust-ok] of self); w2 ~. k: D+ \3 h1 K% j
;;
根据ij的信任度来决定是否与j进行交易[! h  a5 A4 m! G$ z) I
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself: w/ ~  K7 F% p2 T; D9 E3 B

" @/ ]$ O4 U  J[
% q- J  K, M! Q7 Q: S
9 T) J& i' @9 Y: q' M
do-trade

- o& l' v  m3 c& ~+ G- z" e& \
7 c- K  X: @; ~& X, Rupdate-credibility-ijl
$ j3 H4 c+ g& w$ j" N- Y

& S, p( Z7 T: x* g! g& Q1 M, Nupdate-credibility-list
! @& L6 c1 O7 d& M3 |

/ e& m6 N! v( j; D$ X% M
, g9 {  S6 {2 Z# N- Bupdate-global-reputation-list
) T7 _& ]) E! p" T* s% U
/ B8 U6 n: t7 o# L
poll-class
8 b$ C( _" S% b0 C# L( l' b
) _2 x  o7 y2 J+ M
get-color

/ D8 g! h2 j8 C% [8 _
+ s" p3 ]- I6 l; d) @# Q- K]]- b7 k. ]2 e" c! A

" C. }, j. t8 [;;
如果所得的信任度满足条件,则进行交易6 U( o2 `* y' U- \  `, E2 @
3 @& i( w# Q! m6 ]7 r6 b/ ~2 Z3 C) F
[

  C& p- V8 m1 v% V
2 g7 F& F4 b9 T1 yrt random 360

$ b$ t% B& }  o% S. u6 `( X0 [7 z( o
* f% f0 D# y- A9 J3 u, a$ Cfd 1

$ J4 D+ U' a* n2 s8 W8 g1 i: w; x# G0 L7 n5 H
]

6 y2 e. F  O0 |* M! ]
& j+ p6 O" ~9 h/ o" M+ Bend

# x0 [* c, e1 t" G% k( A  @
# l  J' m8 {. a4 _# B% k6 `to do-trust
2 p$ r, h5 J7 H: X# O1 `2 wset trust-ok False
/ D0 g7 X; f, ]8 m, W4 f; n; Z3 t7 j+ G) _) _' G
  ^; k  c3 ^* G
let max-trade-times 0
; D0 m2 _+ R6 d" T, o% H+ [& qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# H: w6 T) u, j5 [
let max-trade-money 0+ z& a9 k4 C1 D5 t: F/ k
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]! B9 \. y- V# c  }5 T5 Q
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))2 j2 `+ f/ ^) {; M9 L

1 J3 J. [$ A/ [2 i: @5 L0 o5 ~

4 E* o) Y. t) k2 j; X+ i0 ^8 Nget-global-proportion
: x$ g! h3 L) D6 {. }, I0 F5 ^+ Flet trust-value' Y$ ~8 k+ S% k# m1 F
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)
+ \9 w! \' \) T. C, \
if(trust-value > trade-trust-value)3 v) T. h$ }3 E, I5 V$ M/ ]
[set trust-ok true]# q: @( ~0 c! e6 p4 ^" t5 R+ H
end
  a" j4 K- f  f0 q0 j! o8 y: N1 X5 [1 [* t" f4 d( r' A
to get-global-proportion
3 d8 i3 }5 {% }8 v0 wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- s4 |3 L9 N6 z1 P$ W
[set global-proportion 0]+ _0 u* A2 I$ h+ x, q; F, j4 Q$ W3 ?
[let i 0
5 Y/ O2 G- j: ]- ^let sum-money 0
: B- ]6 j% h4 x3 i6 G, w/ e; d* Owhile[ i < people]
* b  F: s" c8 y9 k. p[
+ }& h: @* N7 ~* e+ Vif( length (item i" n8 f8 q5 }! [6 i; I. p
[trade-record-all] of customer) > 3 )

8 Y5 P/ c; S4 R9 N" ^[
+ t6 t% |5 Y0 a" {! r: o* S: p& z) Vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))% j: [* f- A, w1 [8 d9 N" h
]
+ ~) N, T  i( F2 E( l1 K$ d3 @]
! @3 E, _; G9 b$ }. y" U& @let j 0: R- H% Q3 e. L! ^. A
let note 06 s( M" E8 d' x' h3 O
while[ j < people]! }* e" Q& m' e- a
[0 f  v! M. d2 T# l+ q6 K) F$ {
if( length (item i0 i2 C! m- y8 s. v0 i
[trade-record-all] of customer) > 3 )

; P: L, [; W* p$ r- N[0 G! u$ \6 F2 ]# {& Y5 C
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): b, _( k2 n" d+ M$ K. m: [. x! S9 t
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* N7 R. ~+ ]2 X) g. ]# v
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ W5 E2 x& h; a]$ K; A/ p' G; c8 M, k
]6 d4 j  a8 m# X& P, B
set global-proportion note
! |1 F' M  x$ T( R! N; o]
: D9 r" F4 {8 a% j# ^( v3 {end
! Z  ~) z+ T: N) z8 c* \
! [' w& X  L) H- `- Y# ~to do-trade
+ H* m$ C2 \3 A$ @% P/ K;;
这个过程实际上是给双方作出评价的过程4 O* U7 P0 Y* c8 _
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价2 f5 Y5 g+ y0 i( C  w- n7 a  \% O
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
4 u" S6 }+ `9 Dset trade-record-current lput(timer) trade-record-current, k* ]5 h6 R/ w( C
;;
评价时间2 G0 z+ x) E* r3 @' j% A
ask myself [+ g1 f/ t% }. o. d" H- x! z9 k; U
update-local-reputation/ `, R) y* d  D3 U( G9 J
set trade-record-current lput([local-reputation] of myself) trade-record-current
& o3 v+ i* V7 f% J) \7 P]
) |& F1 }- e  ^set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, ]- ~! O' F. S+ \
;;
将此次交易的记录加入到trade-record-one
5 r. p( `" S$ T& W4 w/ `) O( Xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)3 o/ ]  M6 O6 a
let note (item 2 trade-record-current ), m% @/ x. ~" Q. b& H# O" \) x; n
set trade-record-current# X/ l- G6 Y$ I& t5 }, B7 l% S
(replace-item 2 trade-record-current (item 3 trade-record-current))

$ ~2 X' u, G8 j, V' c/ ]set trade-record-current
# u! [# |/ c6 ?, K. g6 D; v(replace-item 3 trade-record-current note)
) s6 C3 I6 \/ [/ Q! a) x& }$ j7 X+ @% G) G+ m9 b+ i$ Z7 `- G

- [2 v5 r; j, uask customer [
$ ^4 `! I  I7 I6 d8 G: ~2 jupdate-local-reputation
0 d5 ]2 i7 `% T# O: Nset trade-record-current& a# z* U* u) j+ K7 u# T5 {9 q: k
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

* q: b* x% `4 @! s9 T/ U]* v3 D& B: ^) Q% k; F
6 F) q1 O& P3 Q% I+ d9 G
! f' V* V, L4 g2 Y
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% N& C, @- z0 z
4 n9 V6 N; L4 w! Q
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( q% e: j7 n0 D- b# S& |
;;
将此次交易的记录加入到customertrade-record-all
/ T2 c) I4 Z- t) i# S# o4 Cend
5 M$ f1 b2 F5 d  b7 i
; L2 c9 Y' }; p: X4 h, Ato update-local-reputation8 Y* Y/ a4 G& a/ m
set [trade-record-one-len] of myself length [trade-record-one] of myself
$ t1 p; ^5 U) a8 k. O0 Y- ?# Y7 W" D$ ?. R% q4 f! B

% i5 ~& k% r, f0 G& V) P;;if [trade-record-one-len] of myself > 3

$ [8 s: S  M% g' Aupdate-neighbor-total
& U) t# K* P4 L1 X2 W1 y$ ];;
更新邻居节点的数目,在此进行
& S$ y- ~4 Q  L/ G4 p, s8 qlet i 3$ e8 B; L2 I$ \
let sum-time 00 ~. x9 W. G; l1 N$ v
while[i < [trade-record-one-len] of myself]9 @+ V9 x" N4 L) v# V6 b0 N
[+ X* K0 r& s: f/ o- R0 x/ c
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% }, u6 |7 X/ t
set i" E1 Y" B: X& Y' k$ k3 j
( i + 1)
' a- n  g* r- e8 g2 ~
]
" k1 d2 B' i$ ^  ?! A* a+ Y4 elet j 3
/ ~4 ?5 _6 o8 ?: {- `5 ilet sum-money 0
( u, m# z0 F& Y9 l5 }6 l  {while[j < [trade-record-one-len] of myself]
* O  ?& Z% W  R, i6 S[+ k" }  q4 x5 n5 {+ R/ e) n, ]
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)4 k. B7 o, T: L" D4 m
set j
! s( T+ T) q6 E$ V) }  ~( j + 1)

& D& K1 |: P% C: \]
7 k) B. T( f! X2 q- ~let k 3
0 W6 Z  }3 }4 {. z  d* klet power 0
# ?% A3 @$ V; z) [; Glet local 0
2 v& _( Q8 z/ p/ X" |" h; A7 Swhile [k <[trade-record-one-len] of myself]
+ E. n5 ~8 T" W" D5 ]+ V" \[
, J$ J/ h9 u" D' E" ?& }" L$ S# ?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)
+ H5 c- ~. D( p/ _2 dset k (k + 1)
/ a5 c, w, V$ ?0 [4 u; Y9 Y]
: ]: @; T& M: ]set [local-reputation] of myself (local)
$ Z. V2 \( ~. S! t; Vend
: W6 }+ e4 T" T+ u" k, S, F! I! V0 V7 {5 I' ~8 I
to update-neighbor-total
; F: i) ~; S& @5 p7 u( j. D
# I- V, X8 W) wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]% X+ d5 S2 f! b/ G1 y( I$ T3 a& P

! n+ ^; V( q2 \8 [! A
" b7 D9 z' x1 n7 _
end
# Y+ s/ W7 {) P4 x" K. e
9 O8 a; v1 w& @- s- D1 {" Rto update-credibility-ijl 5 l( K/ {$ ^& L9 D" ~

5 S6 l- o/ a, f& F, U7 b& f) S;;
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。0 {( U6 F. i* f) T' e
let l 0
5 S5 E  R  D& Y  }7 A1 owhile[ l < people ]$ A' q$ g! P5 m1 G6 j- b& S. y1 t) T* k
;;
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
. {  K& C' ]9 S' ]) L[1 C, ^3 Y: P4 [2 O, f  Q: [5 x1 Q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 K& i# y, z, A" g, R+ Q  M, U( \6 bif (trade-record-one-j-l-len > 3)4 x# B" s- \& _2 f8 O9 u
[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
! e- z& G& Q' K" Llet i 3/ X9 z) I5 A4 d; M+ m
let sum-time 0! v) D6 P: o( F+ I# H
while[i < trade-record-one-len]4 W2 _" z. v6 c7 b! _  @! a$ }
[
6 `. T: V! u) g+ L3 Z0 f3 dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 l2 ^& V% H5 D* G* e# r
set i
5 P- q1 e: d# W% x( i + 1)
. ?2 C/ }& ?8 Y! n/ r
]
: i- D# @# |; j5 S6 Q" {  h9 {let credibility-i-j-l 0
$ o5 h* i0 a& b) T/ X4 m* h;;i
评价(jjl的评价)
- o# y  Y/ P; [! h  H3 z) C. Mlet j 3( P9 W7 r1 n5 u
let k 47 b8 S1 \; A' M$ I
while[j < trade-record-one-len]+ L3 N1 t- Y/ U
[8 D+ K1 v$ W; W  ~) S7 r
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/ i# p+ q" t& g4 Z( B( ?3 q
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)/ s% c! M$ b; E9 b) H) T& |! L1 g
set j! a( _9 [* Q, x; y  Q
( j + 1)

+ {: K) j9 }# M! ], J6 L]4 e# ?5 G! [5 @$ n4 }
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 )): e9 Q' m) Y: A) o4 i# S
2 C, l9 W' F. x. x$ ^( U/ |. M
3 @# Y) H9 Q: o
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ r+ N3 q- ]4 w0 }4 v- U4 i: \
;;
及时更新il的评价质量的评价
# p. H9 m. S: j5 p: D) O0 S" Wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# H4 j/ A4 A9 G& f4 m2 L
set l (l + 1)
* H5 B: P$ z, b% f4 H" `* O( a! ?]
6 t* W: i3 F. ]7 U# z; Oend' q$ [3 I: {" I& n

) U' C3 g4 H3 Z6 W' k, vto update-credibility-list
" w/ D2 s* h4 ~) r) b; f- D5 }let i 0
/ P+ o3 S0 }9 q' Q& U# F+ {while[i < people]
+ ^# ?/ P, A9 F# D0 Q' [[
# ]9 ^6 ?! z  `( ]; Plet j 0
6 W+ z; l7 V( y$ V5 o$ Clet note 0
' W( a$ J- u3 \  s5 v" \let k 0" g6 a( H8 N) R' _
;;
计作出过评价的邻居节点的数目3 Z2 ^3 g+ Q* U, G
while[j < people]
* `" V2 @, U& s+ S[( [* i. j% e. G8 j, }9 P
if (item j( [credibility] of turtle (i + 1)) != -1)# W; ?0 I6 a( H1 w- x
;;
判断是否给本turtle的评价质量做出过评价的节点
2 f7 G# k& l# \, j' A0 P[set note (note + item j ([credibility]of turtle (i + 1)))1 N0 ?$ d6 ^( T
;;*(exp (-(people - 2)))/(people - 2))]

. m9 j# e$ n1 z4 ~set k (k + 1)8 U4 y8 n( t) Z1 c! Q- Q5 Z
]2 Y& i) g2 L, ]6 k' _
set j (j + 1)" i2 k" q: |4 B: ]
]
8 z: x% D7 R: l# u; oset note (note *(exp (- (1 / k)))/ k)
) f6 W+ O8 W2 I% Cset credibility-list (replace-item i credibility-list note)
9 Z7 j9 T2 w" J  Tset i (i + 1)
' m% G2 O( S% ~7 A2 V- E]
; U. u% [/ v! P8 M& [  wend0 A! c, I4 A% I1 |# }/ h
( ?. ~+ Z& E& p& B7 K7 m7 @6 F
to update-global-reputation-list
4 N0 u( T8 ?0 n2 xlet j 0
2 B) x, y' R6 S# }- }, v; R& Pwhile[j < people]
4 [0 [" L+ l3 _[
% [# f" p1 f. wlet new 06 r; k5 m9 c: f; A6 N
;;
暂存新的一个全局声誉" k) s8 n6 g- @0 S2 r9 f7 P
let i 0" y: Z4 Y$ }0 g) q0 Z6 `5 r
let sum-money 0
. a' n* S3 M) \. S% olet credibility-money 07 j4 |3 }" f! s) f
while [i < people], E  c$ O2 H. M3 }: j- Q8 N: ~
[
* x" {' m  ?. }" v# H" Nset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ i) f* i* ^3 o$ ]set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))* b1 u' t! _" q
set i (i + 1)! s9 x, g5 Y9 q% ]
]5 V2 r' ]! h0 ~4 [- z
let k 00 T  r5 m, o4 ^; T0 O$ `! J7 G4 X
let new1 09 L9 l5 D+ e5 y% M) W$ y
while [k < people]$ C' y: k( P  ~3 D  s# `
[9 z* s* A$ h5 O8 {, F) `5 w3 P
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)
& U" K9 V3 _6 ?set k (k + 1)
8 B7 Q# H/ n+ q  o]- ]: v/ x; s* P6 E8 z
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 s$ f3 A- V3 u
set global-reputation-list (replace-item j global-reputation-list new)
: Y8 `% |( i6 g4 M9 |6 bset j (j + 1)
! p4 H: d8 I2 V4 r; n]
0 ~! }/ B+ d) S  }8 G0 mend
1 Y, S& W* T# {0 {& A" f6 j& S# l) v" G$ U
% _* v4 _: m" h4 L! ]4 ^
$ G( r+ a! {8 i% A) J2 {
to get-color
& n5 W+ W/ a, G4 U: m9 e
0 i" @- V  o2 [) L; tset color blue
% r# s8 Y7 C9 x( Q
end/ v# F+ }, b9 C" p
, H$ j% d" M- Z+ e6 ^
to poll-class
: V& Z3 i9 Q4 A1 C7 r, u1 Iend
2 L$ `7 c2 f: @6 D9 O0 k* w
* X8 M' ?2 t1 {; ?- e6 }1 [to setup-plot1& m7 ?5 j* O. j" Y& u

, w) S. d  M, P0 _# J- k4 gset-current-plot "Trends-of-Local-reputation"
% K0 k* c3 w8 n, ~

9 C; P; U$ @) N+ F9 o9 e7 m$ D1 @set-plot-x-range 0 xmax
5 d* C; M8 ~$ K
: N: x* ?. r4 j9 E3 C; i
set-plot-y-range 0.0 ymax

6 e$ n$ m' X# @& Vend
+ p7 t+ b% K; H
2 Z0 y! ?% o8 W& u6 J6 t, ato setup-plot2
4 |5 V: M3 u% y- k3 v
5 W8 w( ?* B9 M; vset-current-plot "Trends-of-global-reputation"

6 x- x5 g1 l5 e/ n
' r/ @* `5 v) o4 h3 ^9 Kset-plot-x-range 0 xmax
- K: o& M! l9 o( C. k
4 ~/ j) ^2 z3 Q5 h* p6 J% x1 o/ u
set-plot-y-range 0.0 ymax

; t9 a! Z- J* X# i/ Xend
% x* Z7 l$ r( U, ]% B: v. D0 U7 q/ j! {8 }& o" o
to setup-plot3
+ t3 |' P6 l. {2 r; j7 b, @7 ]/ O" t1 T& P8 |. |5 {2 y& Z4 W
set-current-plot "Trends-of-credibility"

5 f  j) P5 @  B
: m1 G( U/ j/ P1 sset-plot-x-range 0 xmax
1 S5 J; }* U" @* j
/ b" p. h7 r* y6 F/ m$ O  X# M
set-plot-y-range 0.0 ymax

! Y  o0 I( ?4 r2 U* C# m6 o3 Aend% b  B/ m, L  x" R5 c( U2 Z
5 b2 k# C7 N- X8 K: x# `, Q
to do-plots
, Z  o! o" O* `set-current-plot "Trends-of-Local-reputation"2 f  R0 ?" T) v
set-current-plot-pen "Honest service"
: d4 S4 f. W6 A7 t) G0 c( h7 _3 Gend
4 z  U& j8 q. L& L" U2 F8 q9 K4 n- G1 [  x& C" W. w
[ 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.
2 ]& B8 a* T! C3 y! b& W
! S* I! k/ f. m2 @  X% d, [- t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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