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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; V' F; i3 _& f; W0 x
to do-business 0 J/ J" @! W/ `& G! O$ b$ Z8 B/ l
rt random 360% L1 c) ~  M1 V( s4 ^( }+ ?* _
fd 1: c- D7 w- K6 z/ h+ i( f2 P
ifelse(other turtles-here != nobody)[0 ]; J6 q8 ~1 y
   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.' a0 {  q" H7 R
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 @1 i' N4 j6 a7 G# S3 d
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
' ^$ R/ [& `; W, C7 h9 U) U   set [trade-record-one-len] of self length [trade-record-one] of self8 n) N- i. i/ o. l" k5 {
   set trade-record-current( list (timer) (random money-upper-limit))
+ d, {! `( Z, d! L$ V* |. W: W' J' n
问题的提示如下:% g5 O0 N9 {) w5 x, N

$ Z7 H5 {% E' ^# ~$ I. g9 _5 Y" d1 ferror while turtle 50 running OF in procedure DO-BUSINESS
* y1 j( p, r3 L. X. b1 J+ r# Z  called by procedure GO9 Y# A6 c; u" w3 H9 O; E
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
' A$ _# h! y, n/ z9 A+ m
(halted running of go). f' f( h1 D5 x  [& W, J
; @2 e" A$ _+ c3 @  B! v. b
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~~; l2 O$ Q) d( G- l( E& p
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
' V0 T9 M, F. l; j9 E+ d$ pglobals[! }1 `- M6 G- _$ i! ]! z& e
xmax
# T7 {: ^& b. N3 h9 Wymax
4 z+ K7 l" \4 {# X, Gglobal-reputation-list
& m8 w$ x. T9 y2 f+ v2 v# ?2 u( l8 _, F2 V& L
;;
每一个turtle的全局声誉都存在此LIST
3 D, ]* c% }8 ^  pcredibility-list# d5 P6 ~! i+ W$ i4 M' ?& O
;;
每一个turtle的评价可信度
6 c2 f, [+ @  ^, X$ w' }honest-service* f" R" x' Y- c: U
unhonest-service# Q9 W. X" v: l- t/ T$ [
oscillation
0 r, \# A  J( T$ ~rand-dynamic
; c; o0 ?1 G0 b4 O' N]" U% Y9 p( S9 d

2 t. @4 C; L6 S7 N. U5 |3 N+ M/ p5 Jturtles-own[
: u2 \$ n/ t- y1 X7 Q& b* Btrade-record-all/ f; f, s6 A% ?8 P+ X, E9 L1 T
;;a list of lists,
trade-record-one组成
- p* E9 ]  p: U! {2 W. ^! Strade-record-one
! l% p3 ~7 K. H' O) ]! g+ O' @;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
! Q7 O+ A% ], Y1 D: L
: N0 B3 A2 k; @% I; I! _% V8 t5 K;;[
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]]
% X6 }& K! D5 Mtrade-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]
$ G* R0 Y; @2 |; |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
& m* g9 p3 [( I: q4 Pneighbor-total3 O  b0 [9 ~; o  x5 X
;;
记录该turtle的邻居节点的数目0 J/ M% U/ Z: g$ S
trade-time7 d2 t4 ~, K, @) H  w+ o8 q
;;
当前发生交易的turtle的交易时间2 k! m. C9 @( E) J1 U. e
appraise-give
; @5 S  ]9 g" _;;
当前发生交易时给出的评价
+ R! |5 y: z6 m( i6 Aappraise-receive
3 o- ~+ I3 {$ W0 m# p: J6 G;;
当前发生交易时收到的评价5 w/ c/ v$ b! o0 A
appraise-time& q6 P$ h  z8 c! x2 n
;;
当前发生交易时的评价时间, O8 w: c5 k  s. ^1 G+ u& j
local-reputation-now;;此次交易后相对于对方turtle的局部声誉1 ^, G. `+ O7 s8 I4 q; k
trade-times-total- \+ I# S0 w% v: o: u. e9 _
;;
与当前turtle的交易总次数
& D* a* N: `; i. P+ L' D7 ntrade-money-total! O- {2 G4 N% S/ i: D. P* O% V
;;
与当前turtle的交易总金额
; s) ]! I' P+ J# ~; C$ F3 `' Alocal-reputation- @  \% N6 A. Z( A, g$ v
global-reputation
) q- P9 y4 _( d* scredibility( N8 r* O1 x) ?; u1 Z/ m
;;
评价可信度,每次交易后都需要更新+ I4 X' I, I) a" h
credibility-all, h. d4 l2 A, S4 T. }& k5 c
;;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
% n/ G7 [) B6 ?% `, B4 x, j4 S# B. D! m! f- p
;;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, d, w5 x  o9 F5 [! [6 p
credibility-one$ ]8 t3 j$ s# C
;;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$ d! Y& p: N* _6 l- ]/ i
global-proportion4 [1 L4 I: g2 x$ _6 Y7 j6 E: F  E+ q% }
customer3 R3 `1 {  W* S7 O, x: H! Q
customer-no
6 G; b/ l6 _- E3 |2 j/ ]trust-ok
- A4 U& `% I+ b$ ktrade-record-one-len;;trade-record-one的长度
7 n  `: M' b, j% k9 Y1 y: D+ n. w]) J/ V6 m' a: ~  \8 H& k
! O# v6 O6 T. C* p% i
;;setup procedure
2 V4 M. m) E' F& [; B% z/ a" Q4 G7 T( V  V
to setup
! N& \) e$ A" E, h% n, v( Y
- f$ m( {, d6 U! U6 N) l# L2 xca

8 `  x$ A3 s- C, A2 p3 E+ |5 B" j: U, R3 l$ j/ `! ^7 U
initialize-settings

, ^& c& x' t+ n, G% X; |4 y8 ]( ~
crt people [setup-turtles]
) ^( |' o/ a" Z' P) ]/ ^' l

) u5 x( E/ b5 T1 D  P$ `reset-timer

& l) O/ u, L* N+ P, G6 x/ h
) J/ l0 z7 }; w5 @$ ipoll-class

* t$ S! k0 q- U) E" ~% n5 f% K- g, U
setup-plots

8 {* `: C! J: R2 D- w- Y  }- f$ ~7 i0 J# r0 C  B! _7 i' ?
do-plots

+ k9 z5 e$ Y1 Q" P  D% T7 S; m  cend
# H; r: {! ]7 ?  O
! z/ f8 X# R* d4 ~% b0 {to initialize-settings
- g: e5 z' _, ^, w
* y' i7 O# B9 P% mset global-reputation-list []

, t( u$ @- u( G% z3 p+ c3 H0 s! X' S4 b1 p, I4 j9 \
set credibility-list n-values people [0.5]
: A* k% j6 K3 b2 Q

0 d, b% y$ x' T8 ?) G) Dset honest-service 0
6 P% c2 ^8 L, B6 D
* z) W) I' V1 M8 P
set unhonest-service 0
9 i# Y4 d6 m- ]% `# W6 x9 `% r

2 c; w$ H  p, S2 B8 lset oscillation 0

0 d) H, e" Z) h4 u: z3 v
! k2 c1 T% V5 j5 E8 Rset rand-dynamic 0
" x4 u7 i, u3 O
end
+ A. g) w& u0 Q6 q# o
# {  k4 N, u% \& n% qto setup-turtles
1 m# h9 Y5 z, y" B% J( Rset shape "person"3 _7 q; c* y8 r7 H0 W  G
setxy random-xcor random-ycor. I0 m1 \1 _+ }) ?4 o/ d
set trade-record-one []
( n  D) O5 R4 k" ^% L
4 I" _/ v  D6 ?# _2 ?1 G% o
set trade-record-all n-values people [(list (? + 1) 0 0)] 5 N! r6 z' _1 W7 w9 R" ], R2 u
) C! w" t' M7 u8 u5 E$ W
set trade-record-current []1 `3 e" i" A/ q) p8 h
set credibility-receive []
. _$ o8 V7 B, Hset local-reputation 0.5
* x* k0 }( S/ [% pset neighbor-total 0
  L6 g+ [7 ^  T3 n+ H2 o. Jset trade-times-total 0
" @& c2 M0 O9 H' N4 Jset trade-money-total 0) j/ r# A. T" t$ n# L* N, f; t
set customer nobody
! ]; s$ ?# [+ L7 G# \set credibility-all n-values people [creat-credibility]
+ {8 P' a8 r) [' ]set credibility n-values people [-1]6 L8 _4 }3 V1 Y9 K& o# ~$ b5 k! G
get-color3 o0 Y% A* K! W% f5 j8 a

4 h; H# ?/ {4 y" _! [0 Gend0 g6 g. V4 B' J$ j

3 A% _$ a$ p5 Y# Z2 _to-report creat-credibility% y/ Y# B' ]7 g5 Z1 v- a/ k( q
report n-values people [0.5]
3 f* b1 q* w) U0 m6 wend
) _, J' C8 }- A2 J9 `2 w, P3 j$ F, w2 q+ G
to setup-plots
  `/ F; J9 Y& J2 H$ y3 p
+ h, Q! ]* F7 V% D" J$ Y0 e6 sset xmax 30
: E$ ?" L8 v# T" [" g* Q

; y- m/ d! c4 z* M2 \set ymax 1.0

5 g7 |& E; Q  Z6 v5 a( s0 ~
7 K/ u' O3 q4 Aclear-all-plots
' K7 s7 v1 D/ ?. `

' J) P+ e- N" b/ msetup-plot1

- I5 c  r0 _# e# Y7 s3 L
$ j2 @7 T: Q; o; u$ {( }- w9 esetup-plot2
1 K# y- Y+ n2 K( P+ t; {: I4 d
/ j9 C( M/ E3 \! [
setup-plot3

' B% ~' y) z; J4 Aend& v3 F* D: T9 _7 s( _$ u

9 C) f" L$ i' J9 Q& p;;run time procedures# H: m" w3 [, }

: ~& `3 h0 R1 M# r1 [0 Mto go
, s2 U& ~+ k, P1 \" u6 s* l1 F
0 ^/ p5 G% y, }* u1 E2 {* Pask turtles [do-business]

# {1 B& |8 c) N# t/ y) [" Pend0 ^' x7 N4 m: V- r8 e2 h5 Y, s0 z2 d

7 D- U0 o9 t  A2 y4 g2 Yto do-business 8 c9 ^8 h% k& K, a9 t
4 f0 e# o* g7 n  ]% E# C( Q
( ]5 g5 `! ~, j* G( W% O
rt random 360
! i# I! v% Y, D, X3 f" L! A! k" r/ c

" v" B* j: i, A  e" }/ _4 h* a2 \fd 1
/ j/ S: e2 b$ n  a1 S

1 X" T  K8 D9 Nifelse(other turtles-here != nobody)[
; p5 I+ b) s1 i
' g' ^8 z: _, t6 o' G: U2 ]
set customer one-of other turtles-here

1 m3 H0 N( y+ M2 p" @. a  o
( u9 C5 B, g$ L+ V;; set [customer] of customer myself
) {# L( ^; D+ x' P! l# E

- P& {3 e! G8 o' V6 T0 S4 n) dset [trade-record-one] of self item (([who] of customer) - 1)6 a3 J; p7 k6 N! G2 [9 X* P2 U
[trade-record-all]of self
2 W. K, J% J2 }6 x: |+ ]. R;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 }4 R( I9 C; L4 \8 Z, V4 L: `/ y% j2 O5 c
set [trade-record-one] of customer item (([who] of self) - 1)
4 l( f) o4 U4 k. C# q3 K/ N[trade-record-all]of customer

: ?5 b7 W  s; d) ]
1 V( R1 y' S) \! ?& ?7 R0 `set [trade-record-one-len] of self length [trade-record-one] of self
+ F% a7 O1 _: b- T7 [! I6 t, k

% ~' I$ O9 }! y9 }6 \+ f9 Uset trade-record-current( list (timer) (random money-upper-limit))

9 v; C" j9 z* @- c, ^& d
1 e- K* U0 I# i$ ]$ e8 `  ?: Oask self [do-trust]
1 k. q4 W2 i$ n% }  A1 ]5 w5 J;;
先求ij的信任度
$ n, j  G) |8 r1 l& s4 g# f0 Q5 l
* y- p% P, r7 \- R  ]7 Pif ([trust-ok] of self)
8 E% Y* a* u* C, }6 ^0 ]* r% t5 |;;
根据ij的信任度来决定是否与j进行交易[
% o: p0 W2 }: h- g& `% ]: U9 G, dask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 h7 u0 |; z! m% N
. r. s( Q- K3 n7 v6 x) ~7 I
[
8 f6 H7 L. f% H0 J6 q  I6 u/ k

  G% h6 N5 X5 v& X. {: g" F8 ndo-trade

7 o) H, S% i& F9 G2 x: U  B/ j+ k6 }. b& o- [( F! P
update-credibility-ijl
% l1 N0 {/ x0 I$ h8 ^( k1 Q
+ {' U9 r! e* \) H" L3 q! u
update-credibility-list! f8 Q3 t: I* s9 S

/ i! O: x6 a7 ]/ [. [
/ _$ N' ?) V4 \: Y; b3 a' Xupdate-global-reputation-list

5 V  ^& h6 Z3 ^% e! q8 U+ t3 Y  R8 R' p# f
poll-class

% |% R, _! ~6 p. E# s, g: B7 c6 E" j
get-color
4 [. o% H- b5 M4 V
3 `1 C6 M/ `$ N4 b. O  d4 ?0 c- _
]]
7 n+ Q- O/ R4 _; z) e* A; {1 V9 ~% w1 e: A( b
;;
如果所得的信任度满足条件,则进行交易5 f' W* d9 P1 S0 y# u# q% f
0 f; k: ?" H9 {! D5 v& n( u5 g
[

4 l- c  |% J3 t# v" }/ V
9 ~0 f9 |+ l. W  wrt random 360

" M% `2 m6 E+ V% z9 A! ~) [& L/ ^" D- r: |) F- y* v4 k6 n4 x
fd 1

. a8 d: k) c  `
' U* n$ q4 B' Y]
6 K7 J* W' J7 M; ^4 N- L
) q5 O; j) M. B; C
end

1 f3 C9 ?" u: C1 J
2 b+ e) {6 `8 S( X: Z- p- Hto do-trust & h: T. p# C5 B5 a- a
set trust-ok False
* J% X0 a! u2 [: c/ C2 H% `- i* s3 Q- C3 y* B$ }

, k. I0 {) ^, H  klet max-trade-times 0
% s1 w( V% ?7 [) [  aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" }4 N9 e( h" ~7 N2 h
let max-trade-money 0! G" X: \8 l, s5 q/ L2 q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
& q' o" X: {1 @/ U0 o& W* b; x0 Tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, N% i9 c7 l; K& j% {' B2 G$ h. b. b) q6 y6 g  @
( ?- ^; l/ Q. w& {1 X0 o* e
get-global-proportion& _9 l; G& S  A% X. U, B' O
let trust-value/ ?7 o+ D' `/ L3 U' i' U: o
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)

/ k2 O/ o! w9 Z# u# tif(trust-value > trade-trust-value)) b6 M, Z. ~- A
[set trust-ok true]! m5 k1 f$ j) B3 L: ]# x
end
) q2 ~! H0 C: g" y' r9 U) V- c! U- A% _' N3 u
to get-global-proportion& H" s3 M( O( l. }  m; N
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 R8 A, q# W) I
[set global-proportion 0]; }. C5 ?& q; X7 X$ o
[let i 0
' E2 g+ Y. r! Z0 Z" i# C5 V; Ilet sum-money 0; r' q. B  X. L6 i
while[ i < people]3 F3 T! _$ Z, m
[& |) G: }* C& Y/ u
if( length (item i* u  N4 Z8 K6 u8 B: E* [
[trade-record-all] of customer) > 3 )

; j8 |+ h* b, u) C. e[
9 s4 y' D" A" r# K( R4 ~- u# bset sum-money (sum-money + item 2(item i [trade-record-all] of myself))" }2 P2 ?9 @! _6 r7 e8 n& _, V6 K
]: y: r* {9 d9 m$ k7 p6 h) `0 }
]! ~4 `9 m: C4 A- o
let j 0: r* X$ ~# d& @+ K
let note 08 v3 s) @* H5 L+ ^
while[ j < people]3 x+ n2 r$ ~6 J& r' G) b0 I
[
' `/ g" k5 T8 ~$ t3 N6 \if( length (item i. L& w, ^8 z6 n
[trade-record-all] of customer) > 3 )
) |& P( G. D9 U0 D/ [, ~
[- }* y% O+ V8 M' n- I5 ^7 j9 b% }
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)/ W5 {$ S) S1 I% \& Y
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 K+ F, s0 L2 A/ d! |8 `2 D[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 l1 ?+ ~! u2 _* X& U; P( C
]: ?* n$ I' K. L2 _8 v5 H
]
3 D+ Z  n7 y9 A$ h' u0 S5 @set global-proportion note: `! d, m  y5 R4 a( g. ~6 C
]- U7 I" ]+ v+ j: d. I! n; \5 u: |
end7 d6 r4 h0 L3 Z8 ^8 u+ e/ ~; K' Q
7 v- O( l1 p  V7 c6 S' H* s
to do-trade/ j2 F2 m4 J; d
;;
这个过程实际上是给双方作出评价的过程# X- M& ^0 S4 J# p3 r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 Y) L) L; c3 r" w0 y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  |" L  x# r; c& k2 t3 E5 ]set trade-record-current lput(timer) trade-record-current% ]' z+ S, i7 h# U, E, o
;;
评价时间
" X# K9 U7 U+ L1 z. z1 [. Bask myself [1 i/ f; D" L! e* R" z
update-local-reputation
) O" T  ~) a6 \; R, rset trade-record-current lput([local-reputation] of myself) trade-record-current
4 v5 H7 L- }. K8 K$ x  Y1 ^]4 j2 |# V# U; ^1 k6 A9 Q- i
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 {9 G6 [. [3 t2 Z' l! j# |) ^4 `
;;
将此次交易的记录加入到trade-record-one# Y! P  V8 b. L$ c7 E# B% X
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)3 l9 x1 f; |0 V8 v( {9 F! `2 @
let note (item 2 trade-record-current )" `! |- e4 a1 U9 A! C
set trade-record-current
- `, r$ t  h  B5 _& R5 ~(replace-item 2 trade-record-current (item 3 trade-record-current))
, S1 J1 Z% D  ]* T9 H2 H, o/ y3 o* P
set trade-record-current
: X+ X9 n' A% C8 E' F0 g% g(replace-item 3 trade-record-current note)
$ [% I- K  i! w) z+ }/ U5 g! P) A# W

7 a% w4 a3 v8 ?5 S, G2 t5 ]7 c6 @ask customer [
) l* l) P' x* V' p7 kupdate-local-reputation
8 |6 g) K% I& [set trade-record-current
; o9 V* A9 k5 I8 d; @(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ c' M, C( A" X/ s) c6 h]
2 m- o7 X9 y5 ?0 y: n, d2 @7 t/ G% Q, }+ u8 Z
( h2 B- f; U/ ^# v/ d, Q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ [2 ]) P7 f! X4 _
$ n. h$ [# b9 R' G6 Q( g
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))+ G$ s0 v5 m/ x5 ~5 B0 i( ]* N7 F
;;
将此次交易的记录加入到customertrade-record-all  N3 G9 m/ B8 v/ V' Z) I: \
end% F/ m3 N! Q6 J
( f) q. Q: ^9 u6 X0 E
to update-local-reputation
; `$ R0 r9 i% T; d% d8 D) b7 m3 bset [trade-record-one-len] of myself length [trade-record-one] of myself
6 e# x- E) B4 v- c- j5 r  m$ G& i0 k( d+ F, u; n
" |9 f- f5 B% v2 i7 M  S
;;if [trade-record-one-len] of myself > 3

4 L7 [8 D; q: ?9 n% G$ Supdate-neighbor-total) v' n3 X# N; M4 n0 U: s
;;
更新邻居节点的数目,在此进行3 U+ O, V9 Z7 a- N
let i 3
. r) \4 t% B* z( `* \let sum-time 0
* X- C* {9 }7 ^* \' P4 xwhile[i < [trade-record-one-len] of myself]
% T* D2 f1 r! V1 b& y/ `[
, _3 h4 K& G$ e' _8 Kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ F3 C) i; f. ^* Eset i
& n: ?" E4 ^2 J$ h! x( i + 1)

* J( h7 u6 Y3 l! g1 f8 o$ U]
) l- R+ B! M' x9 v( x8 K3 P9 n0 zlet j 3  w# x' O, A' K+ y" Y. V& n
let sum-money 02 ~; W2 w$ Y; U7 R5 v, r4 O* K3 M
while[j < [trade-record-one-len] of myself]( u+ ~: \" ~# T6 v6 ]
[
9 z! N8 V  B$ s4 I- ~4 b8 P. Jset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)- u' L5 f1 D+ ~7 V/ q
set j
2 q2 n$ H6 g" u- [  ?( j + 1)

% x4 D# E  ?7 w], G. k% e8 F# h& A# ?/ ]% o! e9 Z
let k 3
* g4 }* |. t9 M: b8 m( \let power 0
' F: B2 o. D2 Elet local 0
+ `! n5 D6 X! Zwhile [k <[trade-record-one-len] of myself]
" ?0 }, b" C6 s  l1 ~[2 i) t9 b3 S$ I! @% r
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) - m% B8 d3 z$ b/ ?  _
set k (k + 1)
6 R+ F+ m/ `7 ~; G  |5 C: c5 []3 [, V* Z! W: b# W6 V
set [local-reputation] of myself (local)
* |2 b( J% H% u7 Z& `" Bend
  u& U. V6 L( |8 O) \/ U: M
7 f6 `1 U$ X+ m6 W% pto update-neighbor-total
6 W  T1 E0 E# t7 N9 N  L$ `7 i" N, E) l: O
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 N4 l4 n  J1 I

3 S. ~8 V" Y3 e
9 E0 R9 H/ ?8 z" K! l
end
- |) G; C# c# k/ D" P' y0 ?2 h! U! G: s
to update-credibility-ijl
9 f6 Q' n6 ?1 p3 n! y. D4 U5 N* X( P- w! @
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
* Y1 l& d5 W% [9 ?5 Tlet l 0
; u8 n  f& S: ~; v& t% V7 \while[ l < people ]6 y* h# p% ^" Y! P7 w. a( l% 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5 q4 h4 s( a$ y+ G: w
[
0 @5 _! A/ u: x* rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer), W$ j0 m: t; T3 Q6 F/ R& A% H7 {
if (trade-record-one-j-l-len > 3)' ?3 p8 m2 a! T% y" 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-one2 b& c4 W  o, c, q( m& E
let i 33 |- l  S) k/ z" ]. c, ?2 W8 D
let sum-time 0
) K6 Y3 a6 z% i0 cwhile[i < trade-record-one-len]2 n1 P* M9 X" {9 w5 @
[
% D" ~: b% ~; x2 D% i" ^% Yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! W" l3 ^3 d2 {3 U9 |: O7 Z: }( B- C* f
set i
! t2 }; V5 u; n3 X, B  J( i + 1)
1 @5 _% \6 o, G: ~  P: b0 t, W) Y: D
]
( b/ R) e" Z3 }6 o$ O& j1 Qlet credibility-i-j-l 0
" M6 i9 @+ u9 A;;i
评价(jjl的评价)
7 p) |1 I8 u! F) O, B. v; |( M' }let j 3
4 O) P0 G; ~( x8 p! I4 dlet k 4. i, q: y- j* n2 U/ H) g
while[j < trade-record-one-len]& R2 i  |# G' g; C
[9 n1 A. I+ t) ]3 }# F9 B% _/ K$ H
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 W+ ^5 ^: [& vset 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)
- t# y* S% }% y* m  yset j7 n) G* n$ w1 H7 B
( j + 1)
: I! o- `3 M  ^2 }* I: z
]4 z2 z+ |7 a2 T
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 ))
' l! }( l" ?4 _; G* ~, r9 u- B. X0 o  x7 j: D2 h$ j

- J2 W; G/ S! B0 O5 Klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  r5 C1 U, \; G# w* U5 |
;;
及时更新il的评价质量的评价
; \# `; ^. S$ I1 e! x+ {set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; c. j" g2 U# c/ w, }& Gset l (l + 1)
  s% j& l9 q. u! \' N]6 C2 {, Z. ?! ?3 k$ [$ }/ _
end% A  Q0 K. ^9 s- g( p0 p+ G3 z
) l9 m3 b5 I( Y/ o$ G( _
to update-credibility-list" l) H) m0 n& m3 I! p
let i 0
7 N0 ?. w* D7 P% X# N1 ?while[i < people]
: K. I8 |, _" t) }[
: C9 `' Y0 ^5 |  ]# B) Mlet j 0
" k2 E8 G: d8 L4 slet note 0
1 b: V  s/ R7 ?7 h& `8 F: Dlet k 0
- n3 s+ A" u' n;;
计作出过评价的邻居节点的数目
* W* F4 |# Z" w3 I3 @9 |; Z# vwhile[j < people]6 R0 S% ~# f9 x1 c+ e& i& F- v
[3 Y  Y8 ]1 B& R" h! p: N
if (item j( [credibility] of turtle (i + 1)) != -1)
9 \9 L8 Q' }. x;;
判断是否给本turtle的评价质量做出过评价的节点) H( r% f, l7 w+ b) D
[set note (note + item j ([credibility]of turtle (i + 1)))  M. _  Z% K# m' N
;;*(exp (-(people - 2)))/(people - 2))]
; z2 i, m, j* l# H/ f! t' D
set k (k + 1)
; p+ T6 z3 i0 P. m: b5 Q" y]
# _+ t6 T9 ^  n) i6 bset j (j + 1)* y6 @# n* ~" f7 [" ?( o) G. p
]6 V+ X8 ^) Y# O; w* m
set note (note *(exp (- (1 / k)))/ k); g8 A8 I! u) ?& ^
set credibility-list (replace-item i credibility-list note)  x9 M$ f) o0 G) X
set i (i + 1)
. O9 ?3 N: M6 Z1 t: q3 ^0 z2 |]
  }$ v6 ^' D5 _  X/ V- Fend
1 s& _$ d& E& B8 N: }! j% ]( I9 s1 t& S* x$ |+ Y- ^/ A5 k
to update-global-reputation-list
, A6 d% Z* z7 F- }! u/ vlet j 0, h# L/ ]5 M7 j  H: {
while[j < people]& R. ]( |7 Z! @% `, d( k) L! T9 G
[
8 |6 S+ ?) D4 d, t* t# d% Z9 Nlet new 07 A( }+ L/ O* E. Z" b  B5 i
;;
暂存新的一个全局声誉
2 U3 d( n) \) w% H) ulet i 0
" ]* {1 j  r. D- K9 c% W& x8 k, Glet sum-money 06 G- x2 x$ m% e
let credibility-money 02 k; O+ O4 f/ F1 ]
while [i < people]
0 Z+ @% ~6 l! f1 v1 y  h[
" w$ p& m! U5 v+ M# cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 T3 h1 \& ^% G! Iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- ^9 r0 T, s+ \; @* G
set i (i + 1): H5 J. ?9 y% @  [) u/ O) f
]: s0 F* k3 V3 \8 `+ S6 {0 }2 Z
let k 0
- W0 q* J+ ]* L) g7 E* b8 }let new1 0
) l# f3 u$ Q/ U. y( h, |% `  [while [k < people]
, {# g: |; U/ J& D[
% m% W7 ^) R% |6 O' @4 d% Aset 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)& O+ U; ?' e  h; `: B
set k (k + 1)4 i: W; L( c. p
]. [; ]6 M: D2 S! ?. I
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 f4 [8 S2 `4 S! {set global-reputation-list (replace-item j global-reputation-list new)
% Q. ]7 a- J1 g- N* a" ?set j (j + 1); N8 k  P$ h- I5 h( v7 Z" Y2 Y
]6 M9 O! O0 `8 E" v( a. _& |) k
end7 |- O  E/ c- ~+ B& ^. R, K3 |/ F. H& L

* T' _3 ~$ a* i3 V( x& G% {4 z+ \* |5 J( R$ w6 f7 t

' D' z; C" Y. P' sto get-color  y- l2 f9 U4 k3 _" Y  p
2 d, q" I; {+ W9 R# w' v' ^  N3 A
set color blue

7 e3 B4 o1 x2 r2 wend
5 E1 ~! Q' U0 T% s7 |3 X$ U7 i+ k! P5 O, p. e! S
to poll-class
! A+ Z* z+ h1 d* oend# {8 b; A# H" Y( [& ?2 a

  w$ }7 g6 f9 i- ]to setup-plot1
% b. j7 h0 q8 W8 T! b% b9 G( C3 \4 F! z: c& s4 S- S5 X* s5 Q# O
set-current-plot "Trends-of-Local-reputation"
" F9 C- G4 x+ ~2 k& h: C- U3 E

3 V: U' G, M. Z6 o7 V2 i; v/ F3 _set-plot-x-range 0 xmax

4 l; l) b9 s% F# h0 p2 ?
( W9 [) q0 k$ G' r( Aset-plot-y-range 0.0 ymax
: \8 y1 m0 i0 u/ g! l! ^% t
end8 W, o  m5 r1 p" j! ^$ Y

5 }# b8 x* Q+ V( |- n+ C: t9 @2 `to setup-plot2" c. J4 z2 L* t5 P
6 Q$ v+ s& M# `
set-current-plot "Trends-of-global-reputation"
$ |2 K3 g2 q; ^, q0 L* _3 t

+ Q$ a; F4 L# r" r4 W6 gset-plot-x-range 0 xmax
, K1 E7 n+ T  s
! [2 T( n" l" v- w" [
set-plot-y-range 0.0 ymax
1 [  _2 [# L# Q/ u( H1 \
end& m# `! [4 \) C% d' f8 V

5 J0 E+ ~  A. W/ h6 Zto setup-plot3
. x$ Z: O3 ~+ K+ [& `
' b  Z: C: @# N1 U- Tset-current-plot "Trends-of-credibility"
4 Q6 c3 K  `! W. v7 H7 V

! G& W' O0 U; x7 i% o" Tset-plot-x-range 0 xmax
/ \9 C) t* g  t5 n$ [9 a8 E) d1 ^
2 X9 Y& v( K: X& m; @1 }
set-plot-y-range 0.0 ymax

9 C& F$ M4 w, J% P( n6 X8 S4 Fend
3 Y/ {4 M) }! m+ k; Y" B; W! j3 S- U& D2 A: f9 u; d
to do-plots' Z, ~8 ~9 i( q/ _
set-current-plot "Trends-of-Local-reputation"0 e/ }& e5 O4 N
set-current-plot-pen "Honest service"
. J; l( m: q) ?) p0 ]( y% ^end
9 B( Q; i/ _2 R/ f8 ^( D9 j' A1 g* v6 F5 d( x' ]9 e; `/ |
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.; d' p" N% ^# z, Z0 B- L6 N

+ Q6 \+ a, x6 Q* L% `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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