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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:: S' j7 x. U; H. [# `) {* \' Z
to do-business
' b  v' D5 r$ H/ p8 e2 l rt random 360$ b& i! ^9 j$ B- \3 v7 e
fd 16 i# s, s7 L$ }) T- k6 F9 V
ifelse(other turtles-here != nobody)[
! p( J2 O- }6 V3 @0 ?  N   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.7 y3 L% j0 R2 B5 v
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. v: L- `( c" j7 J# N' d! B   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& S; p3 X- U1 B. c
   set [trade-record-one-len] of self length [trade-record-one] of self
5 q( y' F6 R) l: f$ ^   set trade-record-current( list (timer) (random money-upper-limit))/ Y0 X4 j$ n! }4 C2 h$ W' J
, A9 c; ^% v# t4 T& m# R3 M4 X7 m
问题的提示如下:
9 ^7 G% F# g4 h4 [4 w9 [+ z1 c) N" J2 M! A' k. t
error while turtle 50 running OF in procedure DO-BUSINESS* Q' x$ P! T% ~- _& g1 y1 g+ B
  called by procedure GO1 K4 D+ J# M! u; C6 Y2 O' @6 m
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
" g8 D. j' @" `# T/ S
(halted running of go)9 y- i( M4 x, E: F
) c! i4 [& x* J* @8 C# E
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 V% s! s7 W  D. i
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
2 e: ]& E# K% L8 w1 z' f& p9 lglobals[1 T) |4 G$ s' z) ?' L# M
xmax
$ p8 @& D" l# s$ x) R. Wymax7 F/ G! b: q( H" o6 M  K
global-reputation-list
9 g6 Q: `& y. e3 O4 ~2 i! F8 K7 L, p
;;
每一个turtle的全局声誉都存在此LIST5 q+ c. Z  c6 T
credibility-list* a1 v$ C! I" g  x# O% W- i
;;
每一个turtle的评价可信度
" E0 n' c# k0 L  Z( f, a+ ~% e$ ghonest-service
- ?8 v* F  l  {; j4 K! J( S3 {7 @unhonest-service. p+ r9 ?, K9 a5 G  f
oscillation/ O# f- K5 a8 ^: \  ^
rand-dynamic' r& A, A; q$ C  j  g# G
]: y# X4 V. c$ \0 T& b% B2 v

$ l% z3 v! c) y! J2 [turtles-own[
/ E+ T, ^& x( l/ w; }trade-record-all6 h& r* Y% v# D
;;a list of lists,
trade-record-one组成
0 X7 o0 J* x' S. h5 k, X: }4 z! _, Xtrade-record-one5 W: G$ H: E# I0 Q
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
! Q4 }* Q2 X9 e1 B7 [0 F( P; v& _$ E% M* N
;;[
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]]
$ E0 J$ I/ J: E6 ytrade-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]
' b" x9 p, C( C/ h( y; Q& lcredibility-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' k2 N* V; p) `: D8 y
neighbor-total/ N8 K' A9 A+ Z3 o' ]. k. _$ V
;;
记录该turtle的邻居节点的数目
1 b) e4 h6 Y/ E# H2 d4 O* Ytrade-time
4 S! u: B) u8 p0 N* `;;
当前发生交易的turtle的交易时间3 d$ a: @+ u5 t  u
appraise-give9 z3 K! Z5 n: `9 h2 s2 ?
;;
当前发生交易时给出的评价3 k, r% R3 _9 C2 Z6 l" X
appraise-receive
0 i5 Q) ]% O* M  H" K) I) y. b( S;;
当前发生交易时收到的评价
' F7 n! i2 P9 s# wappraise-time8 V* _  B+ t! ^" r  T
;;
当前发生交易时的评价时间
/ o# R' |7 d% J6 i% f2 x  _local-reputation-now;;此次交易后相对于对方turtle的局部声誉) Q- B9 g# A8 c
trade-times-total* a; l& X4 ^6 t; T
;;
与当前turtle的交易总次数
- m; ~" ^& C: e# ?( ptrade-money-total
: \" ^) ^8 ^8 I/ M$ h0 w;;
与当前turtle的交易总金额
0 B1 X2 Y  {1 r  n  blocal-reputation
- x' R& f9 o$ Nglobal-reputation- u+ P8 a/ w' O, l3 {
credibility1 o3 _+ D2 ]/ p# h' l
;;
评价可信度,每次交易后都需要更新
5 I' W) u3 G6 G6 ~  S! z! Gcredibility-all
1 G: W4 c9 _7 U: g: }+ k! k" W. T;;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
% E6 w$ T& j$ W' J8 v( X4 b* U8 m, \0 b
;;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0.53 y! Z  X( c' z" v
credibility-one
2 ]1 J$ b. V" A+ h& {8 X;;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; s1 K8 ]3 H$ H* q$ Z9 B! x) X% L- E
global-proportion
- q1 H8 ]8 c! ]. lcustomer: ^+ R& p3 e" L& l
customer-no# K8 E  h3 o( r6 W, m0 r
trust-ok
0 }+ a2 y" g0 Z! Y" I# O. _trade-record-one-len;;trade-record-one的长度# \, O+ ?/ H! g- L0 H
]1 g: d6 }: Y* ?& R0 |- X
! Q% z8 d& ?1 O7 t2 y# z
;;setup procedure7 \! h1 `7 }, A3 u0 L8 V1 D& h
/ ^- D- t$ E; b  J4 p
to setup
5 A$ b: {) D1 ~8 i8 o& ^! Y6 h+ n. b7 I; N6 Z$ `  e
ca
# {: `0 w+ M1 b
7 v* B1 [( [8 H2 j( N+ E1 C
initialize-settings
  t& H, h0 g" i- H' e4 \
% G% o' u& Y: {0 s$ G% V
crt people [setup-turtles]

; o) j- C8 M6 ~5 u1 K" [9 P/ y, k4 u
reset-timer
& R$ m2 R1 A/ _4 I

) ]. C% ]6 C; N5 ~* ~# dpoll-class

7 A/ H9 t, `; h  F) r+ m3 s$ \. c* l6 n: U( M
setup-plots

+ T- ^& C& W+ [5 g. E" [' k1 D
4 g+ D% W0 l, M! l3 odo-plots

/ K/ J% C. a$ [( h8 Wend2 s+ A* M" F2 a6 ?+ n/ e
$ s7 M& q9 B3 G; w4 _  }
to initialize-settings
2 j5 l7 N+ T5 L& k2 y. w, ]2 X. x1 d/ c( X9 F5 A# k( O
set global-reputation-list []

4 @9 P3 Z) R% u. C( o- o- ^& C9 p, g8 `$ U. K
set credibility-list n-values people [0.5]
& R+ Y5 w- S% i$ N/ e- |, ?( @
; ^6 p+ H# N- v
set honest-service 0
& ~7 o' ^) e; s4 ^$ W
2 n- R% E0 l$ y4 U8 w6 q
set unhonest-service 0
5 d: c( I8 E' i% X% B( g
4 H+ _5 ~3 |2 w. g4 F
set oscillation 0
% x, b+ K. X8 S. [/ ^6 @; z
" R4 J7 `5 Q* ^; b" o$ L
set rand-dynamic 0
% V9 H. t: P, m, h$ b- k
end
. ^$ Z' _  l" `4 \/ c$ l+ z+ t  |) t
to setup-turtles
; I* I4 \1 _# ]4 d% W& bset shape "person". T2 J3 W5 T" y* J5 u  E
setxy random-xcor random-ycor6 G7 w7 l& y( l7 s% K: D8 C4 v
set trade-record-one []
/ P( [; {) L0 T( R& ^4 Q9 a
1 s8 \9 w5 D: m* F) ]7 B
set trade-record-all n-values people [(list (? + 1) 0 0)] ' t: S7 B. c) L9 _7 K2 }6 a
" d8 e7 Z$ q" H+ `8 ?( |; }
set trade-record-current []
4 t% ?+ A) j& S. _set credibility-receive []
, P+ }) `& ?0 y$ ]" jset local-reputation 0.5& l* i8 P! t% R" }0 }6 U: T
set neighbor-total 0' Y: Z% g! [) m
set trade-times-total 0
+ E2 x- H+ H) D1 r3 f( nset trade-money-total 0
4 w+ Y- G0 q" M- F% }/ Zset customer nobody5 j/ i; r. Q' z, d
set credibility-all n-values people [creat-credibility]$ }: @1 N+ P' t; O- }6 X; d5 S
set credibility n-values people [-1], @0 l/ [# G, N# T; F7 G
get-color
. G! E; I2 |" C; e9 t

2 ?/ v: s+ @: }% s# [! ^. z+ Bend1 Y1 Z! A5 a. `- Q6 E& W
$ u8 f! b( _- m, D! F
to-report creat-credibility
0 D$ l2 Q) m# d  O' yreport n-values people [0.5]; U/ K5 D$ H( x5 |" A( s4 B
end
7 N, y4 Q/ X% v
) b  Y$ Y8 `# ~& cto setup-plots0 h* r: O, `0 q1 v

3 v' O- [+ M: ?/ @* Y% J. L4 H% Kset xmax 30

! g4 Z. m$ o+ E  k$ _5 }/ {1 \0 z( R& ]2 Y
set ymax 1.0

4 ~; k0 W& r% N; G2 p5 {9 }. W, o9 `6 }0 E- `" n3 D5 x, }3 S% {2 h
clear-all-plots
* U9 C$ x. v9 G" Q8 v7 [- ^
7 L2 {4 e; m. l# s
setup-plot1

% W4 L: N7 w( t# l6 {# i& b2 z1 N) L( M- z
setup-plot2
. X! P! {# X& |, _/ ~
7 K* E/ J- Y7 i' k. W! [& n
setup-plot3
* F5 o* ?5 L5 Q" D) x
end
7 k9 z! {( V, T) Z1 y! ^( i( S7 m; T, H& _% [
;;run time procedures' v5 J" T! V$ I$ Y
0 s  G0 @0 }* {' s+ v. U& ~
to go' z1 I. z1 F3 i4 w
) M9 G' `2 E- M; E0 F( ^9 _* Y; U: k+ l
ask turtles [do-business]

! f0 B# E8 G/ j( t" s/ aend
4 M3 ^" l3 Z+ x( Z
7 g+ P4 a( }9 d* R; V% ^to do-business
" B2 ^" x  z0 ?) x6 J6 `  U4 c% J
6 s8 h0 ?7 F' v& G" Q

0 C/ Q& }. Y$ b: u  K: n6 [/ drt random 360
) i( v9 N; I+ m/ b

! y8 w3 Y& l- Dfd 1
: y, U2 T, \4 O7 j7 \8 h7 \
) a, |* Q/ ?$ M/ V1 S6 X
ifelse(other turtles-here != nobody)[

1 V0 `: L! X* V7 {% k! a
/ A9 n& d- O% t$ i3 Wset customer one-of other turtles-here

4 `# m; s/ H- {" u9 w# D, i: x5 J* k. |; k  X
;; set [customer] of customer myself

5 @. @" C3 Z7 E% y8 Q3 k* {5 D! e2 V7 t0 U' S
set [trade-record-one] of self item (([who] of customer) - 1)
$ v7 K/ N5 ]# M( c9 Z7 H" t[trade-record-all]of self  Z' d% D6 W! O& l
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& M7 B1 w3 Z5 d/ {
2 B  E& M/ _  ?# ?4 qset [trade-record-one] of customer item (([who] of self) - 1)6 R7 j! F  b; V4 _# H
[trade-record-all]of customer

* C+ S; C* Z. i. M5 x/ C' ^; P/ e8 @& \* g0 P1 [
set [trade-record-one-len] of self length [trade-record-one] of self

- I. f4 I- r% P+ p. x) J7 m+ x1 {7 d: E( J3 b
set trade-record-current( list (timer) (random money-upper-limit))
. {0 z0 o( ^$ K& \

5 A  E; P. a8 Yask self [do-trust]( f, p9 R7 a6 a6 U. M  n$ N
;;
先求ij的信任度6 i% ^, n( D" m

/ w& I+ ]: a6 {- ^/ _  F. Eif ([trust-ok] of self), M6 l2 C3 \' y2 W) o: X
;;
根据ij的信任度来决定是否与j进行交易[
8 G: y  o% I5 o4 h0 \6 xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 ~0 f, m, L0 ]- c$ y2 i0 N9 N5 d. r$ F$ y7 |+ w
[
4 A2 Z. B. x4 e$ a% Y& x- Q! G
. G0 y" U# f) |' {/ g! v
do-trade
# h/ F+ B% e! E, h6 I5 y) H
! i% q% a4 _3 X. G1 E% N
update-credibility-ijl
* i! C# x* I8 Y  R8 @( B3 H

6 ^+ l/ S2 h' f" b# Kupdate-credibility-list) E; ?1 a# y  d/ f" Y# V* o/ C
  V. h$ Y' t0 x' r' ~
3 J+ n. p* c, n# c0 Z7 k
update-global-reputation-list

% m9 {; q, }* A9 ]$ R' K9 r/ J* i7 k
* N  M2 ^2 X( t& Rpoll-class
# a. h7 L1 z# S* p: O
/ K! F$ g* T  B7 P, H' K8 L& v6 w
get-color
, _- ^% }: `$ M. R& \

! C0 a, K" P: {; j0 n* A1 F+ ]# I]]- H: s5 u- ?7 Z5 w; d; H

% Q3 j9 k, n  `& E. l, R$ w, r  T0 X;;
如果所得的信任度满足条件,则进行交易0 b. z+ t+ x2 W( |6 P

, D0 l8 U: y( `[
7 A3 Z8 l2 u1 U1 B4 i) g
9 ]: [+ {/ S; [9 s( B; R; P3 i
rt random 360
" |$ d. j- s% ]+ l
, R  L: f% a8 i$ h& o
fd 1

6 r9 J' q8 C4 q4 o
+ c- W3 v, C4 @) H; |]
8 S  v! x- e: i6 _, p+ S" m: |: O
$ w  Y: m3 A7 o5 b
end

7 W! s3 f7 t- n) U/ {9 P1 Z! f) q$ L" L/ ^% p& B
to do-trust
9 q' n& i) X' _3 @1 a% ?set trust-ok False
8 w& J9 ?5 W+ d) Y
4 u  [9 I! n) b- Z7 Q( b! F) c
* D% ~4 u5 K: H8 T& W
let max-trade-times 0* S4 M4 i* q# o# [! X
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 {: {/ o( F$ T7 a; tlet max-trade-money 0% x6 t+ W) t0 P
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' d5 [3 W9 ]- `let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 @$ _: ]5 B  k
  V* r0 e+ I4 ]# |$ d+ N: U

3 e$ |) u/ D% k% Nget-global-proportion
) P  j6 p* w8 ^; N: S) ~# C# Hlet trust-value
2 o! i6 a, Z" x' c, S$ L; Dlocal-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 i5 d& S2 Z+ ?if(trust-value > trade-trust-value)" }2 G' r& `1 x: i3 l7 J" ?$ A
[set trust-ok true]
: C4 q" i6 b, p3 _! x' ^end; Q3 G& `9 V- a

% O$ f$ }) a$ q7 Z" G% [/ q- X6 u$ z9 lto get-global-proportion, g9 G9 e- _; s/ T1 n
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 \; c* t1 j  z2 f) y
[set global-proportion 0]
, }! G! {& ]- o[let i 0
4 X) [3 D+ T: Llet sum-money 0
- U4 D& k) h/ l) j8 r2 uwhile[ i < people]
5 v( `: ^% @, C4 f' D# i! z' y[& C& s; s' p' ]' i
if( length (item i0 L0 z) P9 Q  X1 j% x* ^
[trade-record-all] of customer) > 3 )
! @/ W. A' Y' }0 |
[
$ X( Q  r& f; o# X8 t3 G* hset sum-money (sum-money + item 2(item i [trade-record-all] of myself))" g% M. p# g( j% X6 i
]
  q2 \6 \9 k2 G7 Q/ m5 O/ @]
- V! ]7 X: w/ ^* T) `7 Glet j 0
2 h: G2 u& `$ n. V# ~let note 09 D: D( D0 x! Z3 k( B$ W+ M/ c( B; p
while[ j < people]
( Q) F, v" Y& l2 V; F! i: a- p2 [[& A# v( {! l( Z3 l6 x5 D
if( length (item i
/ T1 g+ W5 X+ c" z0 Q! }. g[trade-record-all] of customer) > 3 )
& J  g( ^) T5 @5 X: q
[
1 z3 y0 w% q% I/ e9 z0 g, w' Y* P8 Z$ Cifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# Q7 r9 V4 X  Y0 c[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
0 p$ x/ D5 o1 m4 {+ Q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; {6 W  X/ b" _" X( U' Z/ H& A! \: u
]
2 ?" s  _3 \; R* B- g, B1 H( x]; b7 }0 f1 M+ _" ?9 W# x" A
set global-proportion note1 `7 @" T; J" r! C
]& c8 r: p/ P  v7 ?/ G- m  B
end
, k, u  u; V4 ]0 ]7 n+ b* e$ M/ r, Y5 K# E& a
to do-trade
; a6 Z: _3 B4 m;;
这个过程实际上是给双方作出评价的过程" N) o& {4 A* q$ H/ p, F: n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ L6 ?7 q/ ?6 k% C' Q- }2 G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* r, \8 B6 H/ C. F3 u: n3 `set trade-record-current lput(timer) trade-record-current9 r& \# V4 N6 U! [# N* C
;;
评价时间
* u/ a4 [- Z7 W* b' D( {1 W8 }ask myself [
6 M1 T" f" R- O; kupdate-local-reputation
) u1 l( g6 @, @) ^set trade-record-current lput([local-reputation] of myself) trade-record-current2 k$ ~, A8 w' q4 |4 P$ h- r) g
]
3 i0 C, M1 z9 D0 Qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 `+ h0 E# c5 J& s4 Y3 z0 s;;
将此次交易的记录加入到trade-record-one0 Z( b. g9 p- ]$ ~. W
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 K* }# D3 X9 [% V
let note (item 2 trade-record-current )
: V& ~5 }, d: Nset trade-record-current+ z$ d# M$ m4 ]* V% ?
(replace-item 2 trade-record-current (item 3 trade-record-current))
# R) `; E) h0 h. }. u; E* g
set trade-record-current
% J& d& i2 c/ f! x6 o(replace-item 3 trade-record-current note)# y. L4 F4 G" o) N( y5 N0 T
/ J/ Q# j" U) g1 |
5 W0 @' B; ^" p% Z& U
ask customer [& o* g+ c$ b' O* _, [3 J
update-local-reputation
8 w/ _7 [1 e. {3 Y3 C- ~9 G8 N* Aset trade-record-current9 t9 ^7 X1 F2 h( p
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  s3 Y) [* H! y* q
]
+ o& L9 x  l" ^( s' E: w" L5 Q$ w% H  a  T3 U

& `9 b1 i, }7 Vset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% w1 H" q7 J9 x

8 M% }! }' O; R3 [, Kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ V2 v8 p. V- c; Q. H;;
将此次交易的记录加入到customertrade-record-all
" j; `  R0 X0 t( {& c, W+ \end
# ^  V0 E' ]0 W! x( _( K1 U
/ B' H( B( _8 ]2 {* ?, \2 J8 o3 o! F+ qto update-local-reputation; w4 ?" P+ u4 B7 w2 [
set [trade-record-one-len] of myself length [trade-record-one] of myself: c0 z$ I0 n+ _2 Z$ J: ~' t/ i1 `' ?

* ?/ C. Y# F7 s; q' r$ D# N0 j. I" F* U$ b& v' x; _
;;if [trade-record-one-len] of myself > 3
1 e7 ?1 B5 W' p* P
update-neighbor-total8 x; m& ?! n+ T  ?5 }
;;
更新邻居节点的数目,在此进行9 K# N; z5 A9 z, d" e
let i 3: p9 ?' I% W3 k  K+ U4 ?- I
let sum-time 0
1 v% q! z3 \$ k4 Ywhile[i < [trade-record-one-len] of myself]
4 V1 h/ h# b0 p7 \+ y9 m[
, D. S3 R7 |! ]; D" Yset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )+ H# d0 _0 `; @$ x: _' ]
set i
" F6 I, A, @- |7 i" X7 Z. ?( i + 1)
0 e: w) f  P, \0 D8 p
]
6 q) I- a/ {& o* v& nlet j 3) S/ j! x# t% f$ ?' a
let sum-money 0. e  D& @& d6 G" W
while[j < [trade-record-one-len] of myself]
9 I; A8 K2 Q5 K" d) R! b$ F( w[
5 |2 t" T3 J1 S7 S3 S/ G" N9 \! g$ I3 mset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
- Y5 @7 ~7 {- I# V1 i2 Qset j
- l0 P5 M- i7 E, l( j + 1)
5 E! w# F2 R3 T% T7 Y  Q
]/ y# [$ p8 |# n8 p* d) o
let k 3
4 C6 q" X% N5 X# o8 V9 H' Tlet power 03 ~2 Q0 S# u0 w6 X2 y, g
let local 08 d4 @. b. H% M7 |6 ^! v5 Q9 V; f/ m
while [k <[trade-record-one-len] of myself]
8 Z! H  k3 l% F. R' O( Y% L9 m[
: e' s/ l4 G1 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)
1 d3 Z" _. `, |1 V  J$ T9 n9 |set k (k + 1)" F3 B5 ?( Z4 D+ V
]/ P) }- Z; H! G* n
set [local-reputation] of myself (local)
6 Y4 h3 d% n! c5 i# I1 Z6 Rend; P/ H1 v# H- Z2 m9 ~9 Q0 M
5 {! K5 V! ?5 r
to update-neighbor-total* H9 j% U5 P* R$ Q/ M+ E( u

" i4 G' B& r# l8 c  X5 R9 kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
2 K% G4 m% ]# \& F4 ^
! U: @0 Z  a( F) {7 O! S* z' q# M
4 j5 `% w& `. b6 E% o# i" `
end( i* E+ E! J& W& e2 y; w
$ k2 c# G) F" A# \: |5 K1 B& r
to update-credibility-ijl / i0 r3 J) B0 m
8 I7 a! e0 t6 M" ?5 q5 Q+ J5 N
;;
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。' ]9 w* l. j8 z% p) ^6 A( l/ Z
let l 0! t3 i0 P; T# a+ [
while[ l < people ]! m7 _% _( M( A3 C3 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5 A% `- h9 {+ V9 \
[
4 p! W, C* Z& t3 qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
1 Q8 `" p9 e% H8 K# dif (trade-record-one-j-l-len > 3)
4 Z6 x/ z1 [1 x, \4 {1 Z) f[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/ q! Q- l8 l$ X- u) o- N+ ?
let i 3
  r+ N; _8 i! B. x2 E3 {6 R* M# z% ~3 alet sum-time 0" n( o4 H4 S1 I* @% p/ r
while[i < trade-record-one-len]+ f: X' O1 F* S: U# z
[1 Q+ ]* \  w. A8 G7 P
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 O$ C, M  D! N+ Q& P, O$ xset i. d& S+ }5 V+ D8 U
( i + 1)
! h# d! ~) |0 N$ R+ I' s
]
3 D$ Q7 m$ {" Qlet credibility-i-j-l 0
8 q" h  n3 l6 z' n* y7 `;;i
评价(jjl的评价)* e* `5 k5 Z0 K! X) J9 ~
let j 3
/ t: |, D9 q/ Q  U% ]. Klet k 4
+ L' b1 c' l! X2 A3 u/ V9 ]while[j < trade-record-one-len]! L/ ~8 _$ ?/ h( t1 _# `( I# S
[
8 R% N2 P3 i: f8 P4 mwhile [((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; j6 M' G/ Z) _" \( D3 f
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)! n+ \" \! a7 f- B
set j
) I7 v4 ~9 X$ t! ^( d( j + 1)

: v1 R, k: r7 ^7 |% c]$ ]) I) ?: Z& r) T" d
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 ))
+ |& K3 |4 }! T( N" l& ~+ V; M+ L, l, `/ o+ S- F

- n7 D  P7 }2 [& a+ ^( Ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) g8 B7 w4 C! e
;;
及时更新il的评价质量的评价- W- i; g5 |3 h4 T( K. X/ w% l
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- n; R# e! c& j' L) z
set l (l + 1)
7 v" e; C8 ?6 D7 Y  r* B]0 Y1 s$ V5 J' x7 s$ e! g
end
" e; K6 q1 G# q
: T- n& p! l% |8 e+ Cto update-credibility-list3 W0 p  H8 P$ i, G1 A
let i 0
$ F. D5 P( }) F& K' wwhile[i < people]: R6 ^! s" z# _0 t% d
[; z+ r: I2 x1 M3 o
let j 0
; u* f6 V) n( I4 ~/ o3 b% _# wlet note 0
" r" c$ w$ a1 g* y+ R1 Klet k 04 ]3 f) Y8 l& u" a
;;
计作出过评价的邻居节点的数目
& h3 |  ^  F' ^" T4 D4 N  Fwhile[j < people]
5 s6 ~& t2 N+ I+ R' w[* Q: B( R) b% ^/ z4 a% n. Z, R- w
if (item j( [credibility] of turtle (i + 1)) != -1)7 l0 Q0 i. F2 P6 z( K8 d
;;
判断是否给本turtle的评价质量做出过评价的节点7 d( ~% g, L0 _! `& K$ ]3 v" A5 Y
[set note (note + item j ([credibility]of turtle (i + 1)))1 J- m; C6 L, O; F$ A' l% v
;;*(exp (-(people - 2)))/(people - 2))]
" ]) B' E  b7 n7 J: f3 L; W# ?
set k (k + 1)
# T5 `( r* N( D% ^3 b]
# u- c/ O/ S1 E/ W4 |* z  Xset j (j + 1)
5 i- o3 X& q% i1 v% U1 w% K]
9 f; }& f* i7 V7 Rset note (note *(exp (- (1 / k)))/ k)
9 ~3 Y6 G$ V/ P$ ]- Bset credibility-list (replace-item i credibility-list note)
2 s  ]; ]3 [5 Q3 v  Wset i (i + 1)
4 F* x+ C7 T/ D5 W: `# ?. D* L]
7 Q) }2 a" C4 k1 Z: e4 U; e" j8 ^" Dend5 y, w3 M( w) F$ A. a

' E5 i# k) `# M! U. \. T% s5 Qto update-global-reputation-list4 v; @' q$ q% d' f
let j 0) w+ u3 z  f* J8 K& K0 ?2 q
while[j < people]
9 P4 a  t# \5 T" P% L! I[; d* @, d0 z  N+ @! Q! s& D6 _
let new 0
, _/ G9 H  W% U3 A6 E) W8 j8 n0 F;;
暂存新的一个全局声誉
/ G! k" o& R) |! X  I* B, I" l8 slet i 0; }4 N; T$ C/ t+ C
let sum-money 0# C' Z# g! L" K: g5 g8 F
let credibility-money 0
2 Y9 j1 D, C  M) F. x8 Lwhile [i < people]
: q" `: {5 m" o! p[
' k1 P( T; E" T- zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
" {& |5 H2 I4 `, ?9 F2 xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
$ \0 U$ W. J: k3 dset i (i + 1)
: Y& S) k( n9 Z. U" V9 p4 _7 j$ w) k]. W* R6 w' x; H# [. x" ?; b& n
let k 0
% @% {( I" [. p- A) W, ~let new1 0: {7 G; S6 {6 h( J  L
while [k < people]1 v2 q3 z$ {4 u  j9 z- ?
[
, H6 U& z" t8 ?( _7 O3 n/ z2 Xset 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)
* a: a  h" K* P) `6 G; Zset k (k + 1)
5 f, Y4 O- G/ v. c* s5 g/ M- s. @( O]: k/ G/ b% x: Q
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + T% T8 Y$ w7 u% i
set global-reputation-list (replace-item j global-reputation-list new)
8 S5 c1 G, [  E, |set j (j + 1)* ?5 p; ], B3 x
]0 z3 \0 f/ J8 N* d
end( v& s% F' A0 C5 a' |, j+ b

9 S$ N0 @# j# P) v; M$ y, o: K4 X* K# k" b/ r& Y. T/ X4 l1 x

! l- ~! k! h, d/ w7 Z1 ?! d5 _to get-color
6 J+ H0 ?& W8 f. C$ o2 J
( P6 H0 O! \: z% q9 j0 @, C/ oset color blue

+ Q6 C8 Y8 W0 F3 }end7 n3 y% D5 M0 V% _/ ?

1 K  c' q$ d! [" j- ~to poll-class1 I; R$ Y# A) f- l" C0 Y& I  p4 W  {
end
  O4 }4 }0 n, g# X. Q) T: B1 O3 P5 R& T. ]$ {+ [
to setup-plot10 H1 [9 q' R1 X, R; B
$ I- t# |$ k- w; @# ]
set-current-plot "Trends-of-Local-reputation"

& h8 ?$ L9 _+ l. Z  T* P6 `: a+ ~, M
; y6 E8 X4 {- E8 v' Z; q4 t7 Fset-plot-x-range 0 xmax

8 e$ @: x. W6 P0 ~7 X
6 {1 ~. F1 S: D2 k/ Eset-plot-y-range 0.0 ymax

9 k2 _7 Z/ E/ F, f& H( Zend
8 Q- }" y- S$ M, ]
' u& m# d& ?# O- Y9 C) S$ `/ rto setup-plot22 V5 D. p) m0 q3 i9 ]# {

' X' E  c! j3 H/ }% \set-current-plot "Trends-of-global-reputation"

0 X0 t% [2 H& w9 |! T- _* r) X1 n2 m% M) D+ _& s# T/ j) y
set-plot-x-range 0 xmax
6 J. f8 }3 _2 m5 V4 @4 ~
7 I# G: `( o6 J0 w5 y3 c6 M- j
set-plot-y-range 0.0 ymax
% `2 G5 `1 c  u: S6 `0 Q6 b! G/ H" q8 P
end& Z% m% C# s, D# z

" H/ R7 F" K6 D* hto setup-plot3+ X/ f* K1 f1 r7 n. `
0 s' @  l2 V/ k% y* q+ q
set-current-plot "Trends-of-credibility"

& e( Z+ n8 @  N6 I2 Y7 q- Y# y( l
set-plot-x-range 0 xmax
: K) y9 |1 }8 B2 d. X. Y
* u# q) x! V. p* q3 X& s9 M! C
set-plot-y-range 0.0 ymax

+ M, u. n/ {3 T( _. Mend, y8 o: U( b7 n/ T4 P& n
& G6 k7 a8 \4 j; w) N
to do-plots
1 S& t# a9 \  G! O2 Mset-current-plot "Trends-of-Local-reputation"8 V* E/ y7 \! N
set-current-plot-pen "Honest service"
" Y; x4 V- U8 M( [end
% A6 d; c0 O1 f. A3 N+ g" y1 ?* w/ I# 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.* M# i# v9 ]; H% J% m
. U, {7 h2 h6 I4 R5 p
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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