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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:
, j& Y) ~* C# m4 ?to do-business
6 I$ q% ~9 j& D4 |" {, H rt random 360
) [* A, X6 P% m( h0 U fd 1
+ l( v, W2 b! H4 w  k& v7 C ifelse(other turtles-here != nobody)[
8 `8 [. q9 q) b5 \# Q   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.
# b# c& l/ \; T% i   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
% I7 l' z3 E: G6 C   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& g4 S1 h+ C% O- l! {) l9 E  V   set [trade-record-one-len] of self length [trade-record-one] of self/ L) L! g3 ~* ^8 [. n
   set trade-record-current( list (timer) (random money-upper-limit))* X/ g0 O3 W; O8 z& p6 Y$ l, W+ |

1 \, b% t- B1 p0 _: ~/ y问题的提示如下:
; R# S& |' y# z. H2 i# r4 W# C$ `$ |* n, F8 q% G
error while turtle 50 running OF in procedure DO-BUSINESS
' J+ _5 a$ F. u$ I2 q0 A  called by procedure GO
! _; L% ~  v1 z) o/ O" w" x% qOF expected input to be a turtle agentset or turtle but got NOBODY instead.% _4 H3 V8 K( p+ w9 H# U4 z0 o/ T( g
(halted running of go)4 p: S: M" d, L; g4 N

( _  O3 j7 @' v# g* W; R5 M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~~
% Y4 a  E; c/ V' M# g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3 F5 D' y( o( z5 \( ^
globals[
$ {  I6 S" A1 k; i+ V' F( pxmax
5 ^% \8 ], ]- k! A9 Iymax3 x. ~- B2 p& Q) l, n" [* v+ a
global-reputation-list+ \. P5 l3 I: e9 h4 S
4 M& h/ ?' ~  U
;;
每一个turtle的全局声誉都存在此LIST
6 K6 a' h! O$ b1 _: O( Hcredibility-list
1 m1 r2 s" ?5 B/ A1 r) K7 K;;
每一个turtle的评价可信度+ z2 X( q. p: e7 L, w3 M
honest-service' n  c% s$ u) S: i6 M3 |9 D% s
unhonest-service
. G$ D; M  q5 x/ S" P- A+ Uoscillation
" F+ |9 J) s3 q: U0 rrand-dynamic
4 ~8 h" s: P$ Q4 u4 c/ c]
& e0 f2 L* t- {. m* Q! N9 Z" C+ u( D/ n" p( Q4 U; N; B8 P
turtles-own[
% E; H: b- Y; T! V& T! v) Dtrade-record-all3 v, h/ ]* R* \5 j
;;a list of lists,
trade-record-one组成4 D& \6 U/ e5 E. b: x  U- q
trade-record-one
) N  B* E9 v8 {: g* F' ?0 U5 b9 f" ?;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 O: {; f' i' O+ J/ k
8 {' P0 w7 c3 e0 O6 `;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]; D# W! F$ ^/ G+ H2 s9 {
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]; J9 U5 z# c' L& v& ~5 X, H
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list* d) i+ }: A' s' ?* X! M% i
neighbor-total
. p" c$ `  t+ B, C) c9 J;;
记录该turtle的邻居节点的数目! Q  _: B) }' ?( ?7 g
trade-time
  F& H2 W2 y) n1 T' ?;;
当前发生交易的turtle的交易时间' J3 z7 U1 I7 J' F6 O
appraise-give; T  \2 g, `/ g% l: M) N
;;
当前发生交易时给出的评价0 U+ t5 U* M* u0 u
appraise-receive% s$ |2 g) D! A3 w
;;
当前发生交易时收到的评价" |" E$ ^7 n( @* V* o0 ~
appraise-time, Z  u7 A# s: t$ B/ P* v8 v
;;
当前发生交易时的评价时间
. d) Z" I6 R/ g- v1 Q0 {5 W  glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
# \0 a) O/ Y) y' R: s/ ~trade-times-total
$ @: v  J% `& z1 x, ];;
与当前turtle的交易总次数
3 f  {. ~# z6 strade-money-total  k# f" I' C. L) N
;;
与当前turtle的交易总金额( _6 Q& {, C. ^1 r
local-reputation. w; a  y3 `& r+ M% ^5 T, J
global-reputation, i# a* A. m2 a' [
credibility& ^8 }; g' k" b" |8 m4 d
;;
评价可信度,每次交易后都需要更新
: m8 Q0 M$ f, c# gcredibility-all
7 L- y& x1 G! m6 q; L;;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
/ ~; U9 B% l+ q8 {
; U4 ?( J  @! V;;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0.58 J- w: a; B' c! I2 i
credibility-one
4 C/ I1 j1 e3 h;;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" q6 t2 d/ M( b: O. J
global-proportion6 `& U4 }) w) h( n) o" j% k; T
customer
- g$ W5 S" r  V6 A% w2 D3 R# ycustomer-no' ~( X4 d1 \" z& \+ t* _
trust-ok4 Y4 l  h& U2 ]. r2 s% @
trade-record-one-len;;trade-record-one的长度
- s; S- ~$ Y1 q/ x, X& U$ D  E]1 h9 r# M# r  G
1 N6 R& _5 }& b1 h1 Y
;;setup procedure
( `9 E( `2 S* @1 x
( \) @5 g& D* wto setup. Q' w8 B) O- j4 g7 d9 v1 V; H5 G/ u

8 S3 h% b0 D$ q* Aca

7 i: T( t! r, l/ x8 h/ L0 g9 t, m
, G0 z* x, I# w" l/ H9 u8 qinitialize-settings
- B  G7 g* R2 v- e, j7 Z$ r; V

$ a6 L" N+ x- z% v$ [2 C/ x5 B, P, ]- |crt people [setup-turtles]
1 J9 k, ^3 J7 E! q( Q( C1 c

8 ^. r- h- [0 L2 ?: Dreset-timer

" r4 ^. v- X$ h/ E3 A4 v2 T$ o5 O& q. i  V- }0 E9 i  u
poll-class

  |$ P$ U# P% Q7 i; U; E1 a9 g. b3 Y7 N) x! W7 \8 R3 T! V% ^
setup-plots
$ x! m+ ~, U2 o" Q" v# I( A
8 Q5 @3 t9 k/ J& e- l: `1 I. K
do-plots
2 E% T5 @0 d. R3 G
end
, ?$ {) g/ e) K) m/ l7 Z# e& a$ [0 I# B' b: P, h
to initialize-settings2 G) x( e5 Y" f1 D

3 e. Q2 I; c* @( y; cset global-reputation-list []

) I6 s! D4 ^+ |& E+ H7 p
8 k- _& j& q: C% r- L; m- X) |5 Fset credibility-list n-values people [0.5]

" m( J  s$ a8 Z1 W( K
6 O3 l3 K) t' S+ _6 O4 l5 Fset honest-service 0
+ Y$ e0 U8 q* A- c! G- m- N

3 a8 Y/ u3 V( U) q% v& Xset unhonest-service 0
* c( o* B) i; Z2 O! I! s

9 v# i/ ]; j) Q5 G# a1 ~set oscillation 0

* C! q% x( ~$ b8 H' n' O1 w' r$ `* r/ t4 `  I0 B" n& G" }
set rand-dynamic 0
4 T0 v; b: ^+ U7 ?1 B9 f+ m
end
, j* w; B6 I% V1 o3 _+ i" r# q! q; i+ l( h: Y0 J; }
to setup-turtles ( T0 [) ?. M* T" x4 e) p$ b
set shape "person"# O) O. h: q" m' T
setxy random-xcor random-ycor( J6 r9 p6 b. b+ r; Z' s
set trade-record-one []3 Q5 i: z8 d( Y# x

* v* g3 \& `6 n+ P+ V! [4 _set trade-record-all n-values people [(list (? + 1) 0 0)] & M% ^0 L. v, d5 B6 A" Y
9 ~8 U" q' I8 r
set trade-record-current []
3 E! C# o7 }/ Q: `* Tset credibility-receive []
# ]' Z: y+ q$ m9 \# Fset local-reputation 0.5* }/ E4 ]2 M' ]$ T
set neighbor-total 05 d* V) D* H$ x0 v, q7 ]
set trade-times-total 0+ T: t) b% |% X" {/ ~# P
set trade-money-total 0
! G* f) `: N7 bset customer nobody* d5 a; U: v1 n' X/ f3 k7 V" o
set credibility-all n-values people [creat-credibility]2 C, s% P+ ^, v! ?. Q
set credibility n-values people [-1]
2 ^; g  }+ X1 [% \get-color
, u% v$ o* z' g* D
7 t; ~$ ^* R9 _: t' A) H( M: P; ?
end
2 c7 Y2 j. H! ~: u1 ]/ J
- w! Q1 @; x/ X4 Fto-report creat-credibility
5 f( N$ C7 q8 U6 \; Vreport n-values people [0.5]* f1 Y1 @7 L! h2 v  Z
end/ U2 d$ o1 `$ m5 p+ k
- Q! O! @! k, v- i
to setup-plots! Z8 E8 O6 Y8 P/ A1 Z4 J6 g" F" @

1 e9 V! \; w. j+ L5 Gset xmax 30

% m9 n" h7 I# c; Y7 {/ ]( a& w& t& U& o$ r# Q: [3 V- ^' c/ w+ w& A4 r5 b
set ymax 1.0

& C7 K* R; I+ y+ B! \( p& Y
( r' @5 ~/ x+ U1 W$ pclear-all-plots

4 ~3 ]8 V( z/ a/ x: I5 A1 K! z4 i" C2 I
setup-plot1
& R( x  Z: b; y* R( K3 P
- z2 X3 O9 S2 T- M
setup-plot2
$ f# A  p" u# S: g, e! V7 {
4 Q, W5 C- \/ {8 y! o6 C; R$ I
setup-plot3

( F5 E- g# a$ L! p+ Mend
2 N% G: p9 y" |$ o
2 g, g$ q! e& ?;;run time procedures
9 I, q2 g$ I5 w, |  L5 V3 I5 S$ s$ O* Y* C. \- A3 s8 k7 @
to go
) m" g5 x, d2 w
2 k! ~  N% G4 Jask turtles [do-business]
2 L/ Z- g" x" [
end2 Y( I- U5 I# e/ s8 i" q) i

2 X2 a. p6 I3 ?' U  d7 v6 z, ^& uto do-business 6 Y6 H" v- x7 C. m5 ]5 k; }/ r
2 R) M! C! X# Z: E: P7 d" M. w+ b! a
! p' M3 s. u( O$ u2 k  {
rt random 360
; k- d( o! ^  l+ `# w  H: E
5 o4 ^* x9 Y0 l# r: |0 U
fd 1
. r3 S7 W0 k! f1 B5 Q. ?

8 f) s6 w4 Y3 R( y* O2 u3 h7 t5 ^3 iifelse(other turtles-here != nobody)[
3 a) Z! V$ p8 B8 P2 w; P+ u

2 q! _- b  D6 tset customer one-of other turtles-here

) C2 R( m/ G/ W! n& E5 X: A9 j) t0 f5 W8 k8 b
;; set [customer] of customer myself
8 I( z! {" W+ [% o8 {- S) V

$ w7 x1 Y5 ~4 t. \set [trade-record-one] of self item (([who] of customer) - 1)
* D2 A, T, N& m0 L  P* S9 f[trade-record-all]of self# p3 a, R8 V' R0 h
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 h/ s+ {+ }; @' K0 x
+ E: I8 a" J4 ?& L  mset [trade-record-one] of customer item (([who] of self) - 1)
& Q# b: s: C+ D9 n$ t( Q9 x* |" n[trade-record-all]of customer

% P- C) ~9 R, A1 e& e8 ^& z( T$ ]; ^1 e% ^; L( C
set [trade-record-one-len] of self length [trade-record-one] of self
, h4 E( U' N; |/ {/ L( @6 ?- N

5 u- M2 |, P0 @) k6 r6 ^6 e$ x  Z6 qset trade-record-current( list (timer) (random money-upper-limit))
. L0 j  e7 r* R6 v) L

9 u' R/ c# F$ o4 p! hask self [do-trust]3 d  u/ |) K* C( @
;;
先求ij的信任度: m0 I, v9 D6 z1 Y9 K$ Y

  w2 Z0 Y7 Z+ C/ T" n& V+ Mif ([trust-ok] of self)
6 U# F4 w3 M6 {;;
根据ij的信任度来决定是否与j进行交易[
* _# z4 Q! x# Q! _( Cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself( S6 U0 s3 ~( H7 M% v: b! P# n( z. c

: H$ w9 d3 ?2 L% m[

; M$ Y$ m$ d( S
2 b' N8 x" ~0 O' ?/ kdo-trade
$ M. C1 g' m: K$ z
7 W' j2 Z/ t$ a- T
update-credibility-ijl
6 s( _, O( L% c3 {) F6 M
  i+ B- A' P5 ]
update-credibility-list
6 e) E, [! ]' g  M
% u% i2 |+ U  J  k1 `

* l6 w- s" L1 G$ ^) Vupdate-global-reputation-list
' D/ u4 u% o6 ]: r' `) J

6 u/ `8 N( ?& g0 T+ K6 Gpoll-class

/ \& P7 l/ }+ A1 n# h' J. R" e, x; T8 J6 }' T6 c# D, p5 \
get-color

2 R; s3 Z# o: o; a* i2 x) ~
) F" |' g0 I$ \  r) l" j9 E]]
! W9 l! {  |8 ]5 N$ }" F4 m/ T0 z3 p7 ?) k2 I
;;
如果所得的信任度满足条件,则进行交易+ }% a5 I1 S6 e7 {+ S# j2 t

$ A4 i1 T3 C& c/ A8 l$ B# G3 P[

& Z$ N/ Z  e; I: e
1 X" ~& k' G* p  L7 i5 xrt random 360

  y$ c. o& Y% i6 [  K7 e1 o1 {; J" q& }/ }+ ^- W
fd 1
; s7 \6 o1 H5 \5 I# t5 b
7 |! o2 h( P5 @- Y% @
]

: }8 _0 ~2 X% v6 ^5 y) q* S3 V; i& L- `9 X8 |
end

& c# K0 G( N3 T) c+ I- h5 V9 K. A0 w' }4 N9 ~% H% f
to do-trust 7 A' t3 P" x; d$ `) f! r2 n
set trust-ok False; I3 V1 X. R* i# O

" X. ~+ g! h! C+ n2 v
7 L8 [0 x! n2 J4 U# F& O2 j
let max-trade-times 0
3 [; ~4 b, C  fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* c' O# ?. ^( O' [
let max-trade-money 01 n' Y$ \$ G; |2 o& F1 O! q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 T7 V6 X: }( `
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& Y8 _9 c- o+ k+ g, r% T, N' b

/ I& C4 ~7 X2 X
  }6 z  L( H3 W$ a
get-global-proportion
+ T) Q! q$ u* q5 V( j0 @6 Mlet trust-value1 x" e; ^0 ?% ?
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)

$ [7 K" Q5 H, E* R/ z- G& N' Tif(trust-value > trade-trust-value)
0 {; x' I$ h/ b+ I; \[set trust-ok true]7 C8 ^! k0 {+ N
end
. m3 p2 D  l2 R5 w4 @5 R0 W
; W, S" _# z2 i6 \, }  e2 G5 n( Mto get-global-proportion$ @2 V4 Z+ y; n  p. Y" r1 n
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 C3 f8 D8 K, @7 b[set global-proportion 0]$ p7 J% V& o' w- B9 z: N* U4 E# q
[let i 0
; s4 Q" O8 Y, f( e- Blet sum-money 0
8 g* ^: Q4 n! p8 [' l+ d% K$ I# Ywhile[ i < people]. E% r2 z3 l8 Q/ U- Q
[0 H0 g( e3 q, X& Q+ J1 w0 l3 `
if( length (item i  z. R1 U. R) e) `9 c$ Z' m' V# }
[trade-record-all] of customer) > 3 )

3 y6 w9 E2 n4 x$ o# I[" x1 A( w# ^# v! O; ?7 D
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 s' n' o  G4 M" S# c; y% o1 N
]
. A$ R6 m, N0 j]
1 Z4 j" `0 J) r1 v$ Wlet j 0
8 a! N) g0 o) Slet note 0; k, q& g( P1 z
while[ j < people]
1 J$ ^7 U5 f) |/ q. ^9 V[
; P8 D* _# D; Jif( length (item i
1 X* N% i. z' h% U[trade-record-all] of customer) > 3 )

4 }' H+ r% T2 R& ~. W; Z[
1 k( [9 ]0 Y% r- p) E8 v4 O1 {ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% @% ?* {3 Z6 T% m! d7 O- j) A
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 I& W: S2 s4 K+ [. m* I8 P[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
9 M  \1 ~+ e/ s+ l9 t8 U0 C]( S, G# ~1 x0 u& \8 i
]0 w2 ~. n& A0 B; u* N3 E
set global-proportion note
2 |* ^5 o6 s- A2 |: V' C]
- D, s+ ^' x/ b3 ~end1 Y- f4 Z% S* l, X; W

1 J- j& X7 `7 Y/ z. uto do-trade/ o, I8 c; _& c! {) Q1 u4 J
;;
这个过程实际上是给双方作出评价的过程
4 [! o/ |6 ~# @; q+ Y5 r# bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 u0 \/ [" p( Y2 W6 {7 X6 Eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) V/ X" d& y1 w" Yset trade-record-current lput(timer) trade-record-current! q2 v8 B8 C% ]) u2 u( d/ N
;;
评价时间: E! r+ d8 |" O) e5 L- n% s
ask myself [
( F) A& E; ]# }: r& vupdate-local-reputation
4 v0 m: X8 a4 o3 n" Pset trade-record-current lput([local-reputation] of myself) trade-record-current
& B3 j- C9 i0 b5 I9 _3 O# k0 y]" n/ R) d9 W- h" M- S
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! J9 {) z6 l9 \;;
将此次交易的记录加入到trade-record-one
3 s# r" \1 b5 R* b0 Gset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 ], p+ R; }- {: g8 ^1 i1 y
let note (item 2 trade-record-current )2 B9 h4 w* a6 V$ V" }
set trade-record-current( B+ _3 e9 m; r: U# |
(replace-item 2 trade-record-current (item 3 trade-record-current))

' X+ k" `; X+ C9 {' sset trade-record-current) Y; _" U  G7 W& a; w9 d$ e
(replace-item 3 trade-record-current note)
& a* q7 d, y# I
8 E, E- b5 j9 v
1 ^9 g  r- Q0 T$ d: N8 h2 N  w
ask customer [# }% E4 G5 r6 `9 q
update-local-reputation
4 e9 Y# b3 L8 U, f4 kset trade-record-current. A3 b, |( a1 Q  _- Y
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 h9 z( U; R% b4 U( I]
7 ]' R7 C0 \* D7 b% W, x  B
- O8 p/ P: b. b& g

1 H4 Z! R3 q- Wset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  [( j1 ~7 l* X) O

) w# D7 b* F8 U5 P8 ^9 c+ n* @set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
5 ^* n( A6 h* E6 m7 m" D8 ^9 q3 j;;
将此次交易的记录加入到customertrade-record-all1 V, R% {) p. ~' m  A: M0 R
end9 I* ]0 f6 y& E9 }( T
. z. |; T( u4 H
to update-local-reputation
) a0 D; ]% x2 [2 d/ z  [% yset [trade-record-one-len] of myself length [trade-record-one] of myself
9 E  Y- G$ S" t0 j5 l- i! i/ W  d" U, G. S4 e; g6 V7 S& T3 c
1 }; Q  C& C1 e& v& u" M
;;if [trade-record-one-len] of myself > 3

: P9 d2 }% Y1 \# j, G5 k, [update-neighbor-total0 d5 ]- w  J/ N$ E  H% y  F
;;
更新邻居节点的数目,在此进行
! A  \# Z4 @2 J( y  s- S. `let i 3
9 A6 T1 A4 D# P" G! p0 F1 Plet sum-time 0
8 X" S% @7 f+ a9 t: Wwhile[i < [trade-record-one-len] of myself]
8 T* M( {* [& B( o6 I[
1 a: I% P: [; r. eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 q' X# N' m7 s' L$ Bset i- k2 Z: b9 p4 x+ s) o5 f
( i + 1)
$ e* [- }8 F/ c2 j& q6 i
]; Q1 X* B4 T& w. ~) x2 S% T- [+ i' \
let j 36 I1 T; E( t# I) d
let sum-money 0
( F$ e6 M5 T; B# p  M  h4 Twhile[j < [trade-record-one-len] of myself]
0 x* y3 B+ L1 A0 R8 o5 }6 Y[9 l' R# H* m  n0 e: x, B
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)
9 z9 _% T9 @2 t9 z  Pset j
# T+ u" e7 O8 m3 i( j + 1)

$ h8 h) l* b! o" o; t]# j& x% f* v/ }6 ]
let k 3
4 e7 O) _6 Z9 \0 n' H) J) alet power 02 n& B" G; B$ |  J
let local 0" F1 B# l) R0 c; V
while [k <[trade-record-one-len] of myself]4 p$ b+ A, L. |  _: U5 x
[
3 ~9 E8 n  p$ Xset 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)
3 ]$ y/ h/ e1 L" S$ hset k (k + 1)1 p6 P# e5 l$ H+ A# Z- p6 \) W
]
3 [, z1 s" r* M/ v0 ]: C5 E* nset [local-reputation] of myself (local)
+ w% j8 D% A7 `& \& G8 D/ u7 Eend
4 g0 Z, d# j* h4 h6 R1 W+ m
+ Q* C5 F% U, n/ \- p: }to update-neighbor-total# W  t. L; J0 V+ ?* S

6 v7 c% E! O) ^4 Y* |- r- Sif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! n9 w  o  U$ C5 l; R
' w+ V# J1 R( K1 Z; W* R, H
$ A* j1 h! i! J
end
! _' ~5 h- g5 }5 S5 p6 W: a  N0 n; [0 |; }+ t# C, t
to update-credibility-ijl 3 M5 S( [* H4 Y: P- |% M! |' k
2 N/ k6 p* g+ o* M. g/ c3 }, Q) V( z
;;
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。
1 A# L& K; j$ w3 @( a. Ylet l 0
! d- O% |1 P3 w  l! C5 Y. |3 ]while[ l < people ]
6 N6 q3 c2 h* C! v4 F;;
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0 `2 {1 Z2 C& a0 {
[
5 n% H* b7 z: U* w5 plet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 r$ \% @+ G' F; e- hif (trade-record-one-j-l-len > 3)! T9 v$ i# Z2 L" L
[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/ j& E8 d& u4 N8 V* p
let i 3
& k3 l' {0 p0 e. v% Z, p; ^# tlet sum-time 02 P5 N; m9 Q. D
while[i < trade-record-one-len]* l0 ^7 `) o5 ^; O
[
0 Z( A. N$ s: N% C/ C0 A1 m- _  Hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 B% b) Z! _; q
set i5 k% G9 _1 R. N" I' f
( i + 1)

; ^1 |: m( [5 l& ^. O7 j]% ^+ a# M* Y. Z# h( @
let credibility-i-j-l 0
% [7 c5 x! c5 I, @) q;;i
评价(jjl的评价)
6 P  F' S/ g4 m1 \7 |4 g" flet j 32 N8 d. T( m) v' J! Y
let k 4! n6 n( ~. O. E# R0 s$ k
while[j < trade-record-one-len]6 k5 `" m$ q( ]: w
[
3 E8 w6 e- h7 e" _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. x! }# C3 d6 b( C5 `$ C) A
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)
4 s# a, d, L& ^5 ~$ ~. Oset j7 ~2 ?* k) d9 {) e
( j + 1)
/ H0 s' ^8 d9 G* G; v- N, Y6 l
]9 h2 H9 Z6 F" Z8 w1 r/ K* @
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 ))9 O8 b8 m2 T7 e6 s( ]
3 _* i# {4 ]. a3 {
! N5 `: m- u- x3 x* M
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
1 Q  O) ?5 B  l$ I3 |: u;;
及时更新il的评价质量的评价
" C, f5 B0 f9 h/ O1 [set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
* E& H7 X9 r: m8 Yset l (l + 1)6 o" V* q5 F: p* G4 _+ n* H: H9 j
]
! f- D/ O- ?: f, T2 [  v5 @end
! i6 H1 ^) ?' B5 L* c! p/ h" d" `  A1 V
to update-credibility-list
7 U2 y0 i4 _# o8 ?) blet i 0
; P- B8 x5 K0 ~; i9 }  l* o; @while[i < people]& n! {3 T6 w# {
[
$ i+ V5 N: @( D6 |! o: j/ Plet j 0
/ q1 E; t; M5 i  l$ T, I* Olet note 0
& d$ K/ F0 n0 y* i, clet k 0% p+ _- L0 U: U+ [. O3 u" E
;;
计作出过评价的邻居节点的数目
- i$ J' Z" m9 G6 D2 y  ~while[j < people]! ?5 X8 o4 W, Q' f* Q" a. W3 H* E
[" s  g, X' D* X, Y
if (item j( [credibility] of turtle (i + 1)) != -1)4 ^9 D9 f: s$ Y" _* R, o1 X5 y
;;
判断是否给本turtle的评价质量做出过评价的节点, l# y* u; E& p4 P* y
[set note (note + item j ([credibility]of turtle (i + 1)))' m& W0 X8 X& N1 K
;;*(exp (-(people - 2)))/(people - 2))]
  X/ ]* S9 U1 L
set k (k + 1)5 c' A$ h* T, K& l- n$ y4 o) D
]
3 e1 ?- U. f. D# M$ eset j (j + 1)
" Q; W( r6 u5 V3 O+ }8 B]
+ M0 Z) A5 @9 F$ |set note (note *(exp (- (1 / k)))/ k)7 q+ X6 }2 Z! _
set credibility-list (replace-item i credibility-list note)+ _$ a( _) C2 u9 v4 m: R3 W
set i (i + 1)6 F+ y0 `2 {. T: [+ p
]- X  P4 r1 E( T# E
end
9 v1 m. F( z. _& F2 w/ b: E
  w1 e' M2 G% h5 e9 Qto update-global-reputation-list, q/ x5 p9 e4 q% R. I' ^/ m
let j 08 k  [3 l8 K% S0 C) _+ ^
while[j < people]8 f6 k; @* V6 h( l5 U. r
[
5 B' I- {: X8 o+ h  Dlet new 0
9 ]$ b0 m( G0 N( r  \% o;;
暂存新的一个全局声誉% l+ P# Q) r: z5 a' f
let i 00 Z1 W* l$ K! g
let sum-money 05 R3 K% w8 N( \' a: n) x) k9 v
let credibility-money 0& M8 u% {+ j9 A% V1 ?+ a# U* f4 D
while [i < people]6 P: l/ \, @) \2 g: T
[
; S- d" V( G( h& S2 ^+ B2 @set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
+ R: l6 G, L0 r% `set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))& Y. `5 `) M0 w1 ]8 d& [2 l1 W+ l
set i (i + 1)
* h+ t4 t7 }0 G! r$ {5 v; b]) F' n0 @- j+ o+ N8 E
let k 0
- K( r1 m$ s- {* @/ H/ A0 Vlet new1 0
6 U" Z2 B; y. z7 D$ S% w# [# Twhile [k < people]# ?: a: \- j* U. |* K/ m
[% m9 |. @' M& k" x6 V2 ^
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)4 ~; r' }4 `7 Y) k  K) g# _
set k (k + 1)( S  T8 _; o! C- z+ C* a; G9 f1 A
]
; s! N* c! I% C* K8 ^3 Bset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
) h: e! B8 a/ {set global-reputation-list (replace-item j global-reputation-list new)
+ v$ F8 W; T" t3 w8 D5 R2 }) ?set j (j + 1)2 B5 i1 R) V9 T( g( s) C
]
( S2 Y0 g  ~; W4 P) ^5 Cend. N! u1 n8 @8 y( X
: [% C8 b  N$ J5 U
5 \2 z( c. r" \6 y7 [  ^" @( j

9 j, A, A0 J+ t' S, x- R6 fto get-color" ~: s% {4 a# I3 m$ _

' R- Q" R2 v$ W! Xset color blue

# S8 y2 t6 g  d; F( tend) N9 i$ f- p# z8 U6 y% k
0 t$ L) X& \0 P. n, E/ [4 k
to poll-class% y6 R* x5 M' z4 Z4 `% O5 i
end9 O0 h/ ?9 b: B1 r. Y: Z6 B9 \$ c, u7 F

1 f5 Q1 G1 ]7 Z) bto setup-plot1- w: P8 ]  g+ q4 i; c- N: W

9 D+ V! }7 U. U4 k2 ]set-current-plot "Trends-of-Local-reputation"
$ M* j3 ?1 B- u
8 i$ M& R6 i5 P+ I% A6 F+ \  F% v& ~
set-plot-x-range 0 xmax

3 e* @0 v3 F  O( ^4 |! Q* N1 |( K, M+ m* f' T2 i0 v$ \
set-plot-y-range 0.0 ymax
4 f4 y: J- t, a; }7 ?3 s% e
end0 V/ Q' i7 J" v$ V: J/ L6 y6 x

/ Y9 Q$ P5 H2 ~( ?- b+ a2 {to setup-plot2
" {) [4 b: }, K+ d; A4 b* N2 B& t- J+ {& `
set-current-plot "Trends-of-global-reputation"
8 K1 T  @. F! V$ Y

; S$ \; @) y1 ]7 N) Zset-plot-x-range 0 xmax

- G+ Z. V0 _. c4 p& U* S( o
' E8 L) ~% _( ]' _+ P- g1 ~9 bset-plot-y-range 0.0 ymax
& g( f' }3 H7 N) p" U: ?% N
end  M0 U( v& E# o' {3 Z9 e
$ d+ i, e' Z" s8 t5 h
to setup-plot37 x5 Z) N) w0 G7 F% A5 s9 _

1 p6 j" h$ w. Vset-current-plot "Trends-of-credibility"
9 D+ d7 Z8 S% I: {4 H
( J, h9 b' Z) p; N; j
set-plot-x-range 0 xmax
/ L2 I' G4 o! `+ ~$ d

5 `% i, p1 [. z/ Q6 S# r+ a. u8 Yset-plot-y-range 0.0 ymax

; A" P) F" y$ g3 ]end
5 A' Y7 ?: F4 s5 X3 b8 S' f: I/ S1 @0 b+ X" T# g
to do-plots
, w9 |9 S/ u( x" s3 }+ w) ]% @1 M' Wset-current-plot "Trends-of-Local-reputation"5 e9 L0 G- G0 @" r0 z, g
set-current-plot-pen "Honest service"
" A' {" X! C2 ~8 pend
8 `" [2 C( {% M6 l; {: Q2 i2 F$ y
! Y- O0 Q' P0 ]+ Z( ^+ i$ |[ 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.% `' v) K5 m) [
5 a$ C. C" e7 w
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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