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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:0 t; [+ L+ H3 }; D7 V6 |
to do-business
0 \: x. @* g) L1 f# N3 k rt random 360
0 F% x9 x  I4 X* v* F fd 1
3 _  R1 K  i. H9 a4 [. X ifelse(other turtles-here != nobody)[
( b& H- G0 F: r9 p+ ^. X   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.
+ f! _8 S' {# u6 ~0 R* u   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' {. E3 p2 \9 @% \( O! N; ?   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 ^  R6 B2 e& `4 F2 o' J& c; q   set [trade-record-one-len] of self length [trade-record-one] of self9 U; i9 }0 s/ ?. E; b2 H
   set trade-record-current( list (timer) (random money-upper-limit))- r* ]6 U% s6 J2 w. ]4 r3 N
. t; C- r6 ~0 R! n6 e, {
问题的提示如下:
1 O9 I0 Q5 A6 R$ k5 N8 c( U( a: `2 o0 X! Y2 B2 b
error while turtle 50 running OF in procedure DO-BUSINESS
0 @" V" e8 K! B* y" k7 z/ ?  called by procedure GO
- R5 q7 \: c" C: yOF expected input to be a turtle agentset or turtle but got NOBODY instead.1 y) j4 }& o* i3 o
(halted running of go)
% a0 u" |* }4 {: v$ ^
. e6 i: ?' B7 W5 C% o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~~: A' Y' m% _( V7 n$ x2 U
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
' D" J6 K5 P" R" M% Dglobals[$ g& z, D8 b8 O# \7 H* q, W2 u: b
xmax
1 |: o3 j, Y, N2 G' O+ A: N! yymax1 {5 f' S% v0 \3 J6 [% \
global-reputation-list
: `, e' ?- n4 d' ^& ~0 B' V# F
0 v7 c' b3 Y" w;;
每一个turtle的全局声誉都存在此LIST3 u, f. r7 C% T4 _5 K; s' s
credibility-list# M1 |5 C$ a# k, R% g, e' d1 X
;;
每一个turtle的评价可信度8 @+ \. J; P2 s
honest-service9 o  `/ \/ ?  O
unhonest-service- [. I( A8 j& ~3 r0 o( w) T
oscillation9 f) e6 L' c$ f0 z- U
rand-dynamic
0 T: A' B- l) ]]
1 k! g5 P& \$ B. V2 |0 Z/ N" Z$ S& B2 S' r6 k
turtles-own[
3 d* O! X" p! R3 i* `- C' w: ttrade-record-all
6 v( I9 u; M' z# D4 }+ d5 };;a list of lists,
trade-record-one组成
% K9 a9 X5 V: ~5 jtrade-record-one
' b3 O2 o& u, ^: m: ?;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 s4 V& b$ E# r" u  E0 _

) ]. ?0 P; d& f+ Z  o8 L;;[
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]]
- p& w) ?  ~  \( U  Y& ?% B/ Z. ctrade-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]8 k' P; D* S% e$ W1 ^2 X( n
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
0 O2 z5 [: C6 _$ o$ r6 X  _2 Lneighbor-total
' G( S% l6 g" ?, s; X9 J( ^;;
记录该turtle的邻居节点的数目
1 g. @; N: B( xtrade-time: M2 P, K: [6 ~5 k
;;
当前发生交易的turtle的交易时间
! q+ O: I% `5 n- I4 z% t% Fappraise-give. U, g5 z4 Z2 }5 C
;;
当前发生交易时给出的评价0 m) t4 y) d1 F4 \3 }1 @+ y
appraise-receive
+ w- {0 z% I- ]* w6 Y3 w;;
当前发生交易时收到的评价
% Z! i* y7 V* R# X6 s  lappraise-time
/ P0 b, b, M/ Z1 P;;
当前发生交易时的评价时间! N" M1 U) b' c/ H6 \
local-reputation-now;;此次交易后相对于对方turtle的局部声誉2 J+ X) ]' h' c
trade-times-total
6 w8 R( I3 i, A2 p;;
与当前turtle的交易总次数
2 I- Z8 B  i/ H+ @' \3 Ytrade-money-total/ I8 c0 S" O% i/ z2 S3 K
;;
与当前turtle的交易总金额& |# k& I8 d# x3 t" P& s9 L( d
local-reputation4 ]. v/ f4 h$ d" q9 h2 M
global-reputation" k' o8 z8 b7 x/ y+ o! o
credibility" ~1 E4 K6 s; D+ P8 d1 ^. ?6 m' g
;;
评价可信度,每次交易后都需要更新0 ^8 q% n6 \( _+ Z6 G7 x
credibility-all
" f5 H/ l/ s, P& ^" x5 w; e;;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  t2 G/ E" _: x) D/ X8 B. m* P
( Q+ A) x# {0 |5 B4 j2 J% `
;;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0.59 B2 g0 w; w! |0 Y
credibility-one2 q: e5 Y5 A, ~
;;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
2 ]$ B8 }3 h6 X0 h$ W' [! nglobal-proportion
( _  [) d; j1 }! j" \2 K% c2 Lcustomer
+ u# m/ T$ E& J+ Pcustomer-no: `" t1 k0 W) I8 m* ^4 i, L
trust-ok
2 X) d. A7 m) d: atrade-record-one-len;;trade-record-one的长度# L& ?% Y' p; V6 y' W
]  N! z# v$ s4 m1 N% R

$ k" O6 k1 \  v1 S  h; f! j;;setup procedure
/ ~7 O5 X$ j( I- h; S) t# v4 j; `, z8 @
to setup
. G) Y. G- Y2 l! B0 X! m1 ~3 P- j0 S& K' ~& \6 j
ca

$ r; H, M( Q! k4 n' V) |! h0 A
8 Z6 D- A6 I1 F- B4 L8 ?initialize-settings
. z: d6 |: }& b' j

' \: p1 a" w, ]1 I. icrt people [setup-turtles]
) {1 ]& V+ e6 N1 [

2 w1 r3 |9 ]& F$ Y* A. breset-timer

0 Q" q/ @1 ?; o  I3 X* |) l
5 w( l1 `6 V/ E( \( V# Upoll-class
! y$ V3 d6 i: Y' ^

+ N- u. z( @/ F: @- \/ C* msetup-plots
0 D3 L& \: ?  m
4 i; x# ?$ ]# i. i8 h6 s; |
do-plots

9 G! _& G- i1 F1 Pend
" l+ J% R) D4 {0 _' K  l/ ~. L) X& S/ M
to initialize-settings' |0 t8 V" W/ e/ I: n, Q4 p

+ c8 a1 W+ G% b3 x/ xset global-reputation-list []
. u5 ]0 V1 h' s. E2 Q
4 B% e( a* A4 r5 N& c0 Q
set credibility-list n-values people [0.5]
1 f& c% Q+ g2 S* H( d% K

- B/ B" l4 t" rset honest-service 0
0 F6 ^' D# L! L6 U

$ c; t/ O- B9 W' U4 l) d" J+ q- nset unhonest-service 0
3 |1 u  w! `- @/ ^6 Y7 z) X- d
0 h' k4 _0 k% h4 S, ]3 F
set oscillation 0
$ V( @7 `4 e  n, t" a
) r" I7 Q! l. O2 U1 d3 n
set rand-dynamic 0
( r3 z# s- L& z" N! u$ V' f
end* F5 Z+ H# j$ w# h- Y, U
% `* I- c# d! S& U
to setup-turtles
* }+ v5 L9 ^) `9 Y( h  U! o8 S5 Xset shape "person"- B) w! H) q5 x0 I0 S* \
setxy random-xcor random-ycor. A6 i- y+ D5 K5 ]
set trade-record-one []
  j9 i' ?% k3 V3 s5 M+ ?7 v: _

. Z) t% g' g9 i( Uset trade-record-all n-values people [(list (? + 1) 0 0)] 3 Q% @% C* {# y1 h/ o5 H- b) a: K1 n

6 t& K# F( \; [0 S4 a' vset trade-record-current []  l1 F/ f2 f5 U4 s! W
set credibility-receive []
* y4 o: D& w# U8 m7 ?% `set local-reputation 0.5! [3 L& k3 {0 w/ ~  @% ~
set neighbor-total 0  @0 n) G$ `, W2 D
set trade-times-total 02 H# h2 X2 q2 u' d, N
set trade-money-total 01 F! l5 A: `  g/ B
set customer nobody
  w" J* {6 [1 v& S0 O+ S3 R& rset credibility-all n-values people [creat-credibility]
- _. w9 |+ u' B! Q0 ?6 iset credibility n-values people [-1]
% u/ v( a( A/ L6 kget-color
6 K3 F1 b5 [( d% ^8 K( r
3 [  X/ M& F/ s* W; J4 B1 U
end
& r( Y' r! s; J! {- P: w, G4 z& k2 B
; k% ]. c7 i2 h$ N& [! Wto-report creat-credibility
& ]0 _5 _- W: xreport n-values people [0.5]
! i. C1 ?1 t: Dend" E1 t0 o2 M3 S3 b
8 k0 ?% W6 M. s( N- H8 Q- m
to setup-plots
5 w' x. v2 p% O' n5 g/ L. D
; F% S7 w; @: N* `5 {set xmax 30
# d$ p5 \7 q8 b, Z7 q% X

* [& ^9 r) N, Q* v: v. T$ j' Gset ymax 1.0

$ C* j; G1 G. ]" N, [; @# r: i; U# C
7 n2 }1 y1 V# B' v8 h& mclear-all-plots
7 ~, _0 w# @% |: b

  ~: c+ q. a: r5 ~6 Gsetup-plot1
. u; P( y4 I" w' }$ g0 g9 X

' E& I9 J, ^# ~: O  A) w8 d% ksetup-plot2
; o8 i$ k" t/ Z+ O: _  ]
3 U) Q# i6 @9 o$ m* u
setup-plot3
# o& Y. b/ C( `0 a
end) C- }' H2 S# X8 f+ ^

5 A1 c8 S* k1 [$ n  X! {4 O;;run time procedures
( Z; ?3 {( m2 m) J: @  P' i; U2 }0 y0 q4 D* M1 n5 N; W
to go
' y9 u/ u% b, q8 Q- j" B1 G. O/ u6 S; Q+ x; M; F0 ^" i6 b$ d
ask turtles [do-business]

- \8 ?" I; r1 e4 ]: t3 G; V  cend
, Y! [0 S5 h2 w  Q# l; z( I
' N+ X1 u' m( Q- l. w) B+ M9 w; bto do-business 7 _( s8 H3 z& _3 u  D4 z

% U6 v2 ^# e; R: x* C' f. T* x
9 z* U5 ~8 [! R6 Krt random 360

8 J. [/ j# J# m; I' W# ~" w6 u9 V
0 M/ @( k7 a2 S1 E  [* `fd 1
* k# H" ?- X" q" A% O$ X
% s% X0 X' w6 i; \" U$ O
ifelse(other turtles-here != nobody)[

$ o0 l* Q$ i5 p( v3 v1 `0 B- `% }, A* Z1 ?
set customer one-of other turtles-here

& ~7 `' M! [7 y! i8 J: P
1 g  N2 d* L2 e, g3 H;; set [customer] of customer myself
! M/ |/ P6 p2 A3 ?+ D
0 T% c$ ]& @5 f5 w
set [trade-record-one] of self item (([who] of customer) - 1)# S& y. T9 }. b) _
[trade-record-all]of self9 {6 u  f+ N/ U, ^
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* U9 u% A: X% ]2 U) c2 U
7 i& @( F# y, C+ m  l2 Cset [trade-record-one] of customer item (([who] of self) - 1)
# V1 }9 P4 U9 o, [3 o[trade-record-all]of customer
0 @! Z5 p; t( X2 X. I
7 A' U3 @* [; V! r; m% {
set [trade-record-one-len] of self length [trade-record-one] of self

1 A& O+ o7 s* q* M  b
# c+ E& \; L7 K9 ]# f6 ?& Sset trade-record-current( list (timer) (random money-upper-limit))
9 `( a7 r. x* |8 j( r% E

. ]& E% X1 k1 `ask self [do-trust]
3 G; B' J( [8 m# e% J/ \0 V$ K;;
先求ij的信任度
8 \% v6 e7 e% {# c" ]* F6 K0 ~# q5 B0 [# ]5 ?4 h0 }! d
if ([trust-ok] of self)
; h6 C6 [* h" `1 w: Q3 ^;;
根据ij的信任度来决定是否与j进行交易[
: o; H8 l% r: l8 [4 y/ B" wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) E& f' z& t: g  X5 z  F7 D3 @- I6 t, V# ~
[
  P; }0 ~6 n4 v: d" ?; F9 v1 T

5 Y% }; N9 n1 z1 Bdo-trade
7 x, U5 A6 E% `$ O

7 N. @' ?  `4 [1 Y) }update-credibility-ijl
" O. e# j$ J8 \; B7 p

7 V* T6 ^. {$ X8 V5 g8 Nupdate-credibility-list
. j% B- A- x2 H1 X0 z" t5 f
6 G6 Z: y: H' M; T* F

4 G2 D" u( ?8 G4 E. F# L2 ]update-global-reputation-list
& h/ W7 S: @( E# u, e8 e
4 k; j# Z+ y. P, `
poll-class

& `: m4 x6 e# C" D! r, {1 h
) d8 m/ X; r, Kget-color
+ q1 E  y: N5 L& W+ l* P* y
# _  }8 N4 H0 s7 P6 }
]]0 P: `3 R4 H; S& t1 e) W7 E0 I
) \) {' A7 i( X* c4 @
;;
如果所得的信任度满足条件,则进行交易
' l$ Y* X: \' w; y4 S1 m' _: x' v* ?' p2 E' ?4 c- P& r
[
) ?0 E+ ?* [, U: Z$ k& E

5 N: V2 W0 d% }/ `rt random 360
+ j6 Y3 V" F9 j4 a( B
* J1 n/ s. K) W4 c- X1 p
fd 1
  e7 T" o. \9 \; h. b. n, J3 T
: [/ F7 C. J' \7 b
]

7 M* x0 _& b, X* G; w* g9 U8 N
9 g& f% E5 m. P% M& D& _1 ~$ hend

8 ]% P: t- \; s( y; X5 q4 t. T  ~; C# F9 Z% e
to do-trust   m5 {# C+ r) ?6 h* M8 E4 Z3 i
set trust-ok False
- }" @- j6 w) E
4 L( Z0 O6 q; j% U
/ E5 q5 X/ |) `8 C3 t- j- O
let max-trade-times 00 ~3 M7 }; _8 H: i. d4 H: W
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]$ h* A- h. y' M: I+ R# H" i7 X
let max-trade-money 02 \9 O8 D3 T8 q7 `6 A: }2 z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ S. s6 \! q5 C) E
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). @1 q" f. U) G1 _# }
; t1 e# k7 |6 V1 W- X8 J
8 u$ j. T$ G/ Z$ T/ W0 ]
get-global-proportion
' Q# }( _8 c5 R. \2 G( ]# mlet trust-value- U- p; t8 {6 B: D5 `
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)
" f* K$ ^1 G9 q2 R8 ^( J2 |4 u
if(trust-value > trade-trust-value)
" J) j( i; x: I8 @! `0 _' Z[set trust-ok true]
2 M" m( R; S+ R3 s6 Jend$ ?/ L+ m( ]' O! Q
' X1 }  h5 O; {" f- `3 [8 [6 _0 F
to get-global-proportion
8 e7 q; b) O8 L- q( R7 j5 ]ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 t0 |* {0 K7 W[set global-proportion 0]
( D  _# P6 |. u- j6 a# f[let i 0
; i. t; g$ N+ h+ ilet sum-money 0
# Y& n& k( G; h1 E( R' rwhile[ i < people]$ Z0 f/ J6 n5 g
[) ]$ Q( F+ o# {6 K( z
if( length (item i; H) J$ V7 Q3 W
[trade-record-all] of customer) > 3 )
4 }, N& v4 z6 Y5 l# e4 P
[# W2 w2 H; N2 y# W
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)): B: L% G  I, Q- p: C4 a
]
$ O. }7 }) k; _' c! H4 b. c* ~]1 O/ _- T/ [" J
let j 0
  }: q6 B- n* ~$ A7 N" P* f. Clet note 0) n: J* V0 F7 M
while[ j < people]6 ~/ J8 ~& H2 m1 k
[' G# K6 L- q2 P& I
if( length (item i: Y" n% u9 u8 W' u7 M
[trade-record-all] of customer) > 3 )
% D/ Q) |3 d" q7 z0 L
[
6 a7 V; Y+ J" f4 H$ h8 Xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)( m5 s. H- d$ p6 \
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- }- p8 l4 T  x# K( _' [- Z6 T3 m
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% H* e! b0 Y  c& \  o: N]$ f& W+ O: m. n' y8 s) l
]
$ f- ~3 R$ i- v9 L" Jset global-proportion note
3 E; Q. N4 G  Q, c. H]
7 u; Z0 U2 O* m% h1 m% ]end3 g9 |4 c2 e! P$ X& @
+ h& h" J5 s; O% I. T
to do-trade0 U; q3 p7 I- Y7 h, ?
;;
这个过程实际上是给双方作出评价的过程
8 u& z7 N0 r6 x; \set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价& Q+ Z; ^6 m1 I1 x" i& r  N' X$ Q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
1 \! i6 l& n' r+ Zset trade-record-current lput(timer) trade-record-current$ @8 S- J% P$ x. n
;;
评价时间
/ i7 O. @7 [2 H0 nask myself [( a0 p; Y( G0 c9 L5 N
update-local-reputation
; `6 s, Z3 ~8 S! L; M" `! `7 J8 yset trade-record-current lput([local-reputation] of myself) trade-record-current
5 ^9 H; L/ Y! L]
' ]& Y. H) b0 N5 V, v% U. dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 a$ a# K, @) f3 o1 J
;;
将此次交易的记录加入到trade-record-one$ j2 u7 Y% C: O1 J* y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ D- k% N) x! E) `8 V
let note (item 2 trade-record-current )8 K  l7 m- d( ?# ~, _! m: X5 r
set trade-record-current4 O' `/ b: U* d3 S! i* K
(replace-item 2 trade-record-current (item 3 trade-record-current))

, f2 J& M$ n9 {" lset trade-record-current/ [4 G6 \1 H6 @% w( [7 @/ n) o
(replace-item 3 trade-record-current note)/ i0 M& u/ j' K% A8 l$ ?: o

2 m. @  z' R  U  f% M$ w0 h* \
# q; W2 P$ X9 {, @, o8 H
ask customer [
9 y! f  c: j3 E( W$ F& vupdate-local-reputation0 W6 z: w0 \) G, R: X1 v
set trade-record-current
  r8 a  H- {( m0 y5 A) z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) M+ e+ p0 I& Z) R1 ^( q6 w  u* v]2 a# U5 G' r( m( c$ u

( ~# d4 T1 d$ K

/ D4 _$ V% m6 {5 l' u" yset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 ]- |0 v6 `" C! }
' e0 r" s! T: z$ B: z- H
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 w# c2 Z" |" H% x3 `& \
;;
将此次交易的记录加入到customertrade-record-all. c  \! I2 z) p
end
/ ]9 c. F6 E$ Q7 ?' B7 k+ E( n' P; K. V* o3 A
to update-local-reputation! r8 j$ M2 m9 b) D3 w' X
set [trade-record-one-len] of myself length [trade-record-one] of myself; w, ]& \8 \+ X3 I

# r" Z( K6 `2 i' [0 b8 N5 W- y
  B0 L1 T; B% j/ `# a" n;;if [trade-record-one-len] of myself > 3
" \5 L* ^% [% V* H
update-neighbor-total# t! I! E4 x& j$ M. r. b+ D
;;
更新邻居节点的数目,在此进行  `+ A- L) Z% t$ b8 O. o. D
let i 3
( J1 d" w( R5 `" K, |& dlet sum-time 0
. {& i# w$ b4 N% }& ^. a& Nwhile[i < [trade-record-one-len] of myself]4 U( k, z4 V' o1 t) c
[+ e9 O( m9 H* v. `& N% q# u
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 Z1 K- Q2 ^( Q6 `6 j
set i7 o, p/ f$ N1 F  n3 O" z/ J! u
( i + 1)

$ b3 v  ]/ }% ?9 L) q- O, _]8 O" w2 ]7 x8 ~+ G* R; w) r; R8 ]
let j 3
3 U3 c/ I0 i5 D1 \$ T1 tlet sum-money 0. u( f) s* e9 z  y% L6 _9 F
while[j < [trade-record-one-len] of myself]% {) ^2 X" v! Y8 L$ l
[
, |9 t: A! R7 g, G; b( U# m' ?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)" R; ?0 p% R2 u; U2 I
set j
' K2 W$ J( g* Q2 h$ p( j + 1)

/ Q- ^. v3 _4 o$ p: Z' X! ^]  g% A/ ?; Z+ Y4 T: |
let k 3  J1 I$ T7 \$ I
let power 0
0 {  Z. s2 ~. a& S) {+ clet local 0+ a+ y1 \" W; V! ^
while [k <[trade-record-one-len] of myself]
' f+ t; M2 Z( ?[
, N/ S" s  J8 j9 N! f& X8 B+ mset 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, B% W3 F5 `$ T' }
set k (k + 1)
( {1 O: H) m4 M4 \8 u]
- s0 B$ _5 T- A1 ]7 N( G7 Zset [local-reputation] of myself (local)7 ^6 T1 J& g3 u) W) F# D) ]3 q
end
% a5 ?& [  \; X' r/ T% Z6 c2 N/ s" J- \% O. T* I# o) o
to update-neighbor-total' T* m8 M3 O0 g/ U; E
8 c  g4 W* ?- k! L2 t  p( r9 Q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# G1 V& X8 |/ R4 Z( X6 w0 _6 r

$ g8 Z$ h9 l4 Z+ W3 v
6 N/ z* g8 Y$ H: y  ?5 |3 s
end
/ P& B6 p, d7 E2 ?% \1 X0 J- n% w; i# f
to update-credibility-ijl / m. j% m- d& ^
9 d6 b! E  B+ S" b. D' |' Y6 A
;;
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。
6 m; u9 k! Z8 R' |, Tlet l 0
1 S/ g* \  ^. P  L, Jwhile[ l < people ]
6 m6 U0 Y4 J7 v; ?2 V' x  p;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价1 M9 r1 l6 U5 F
[/ X* A9 @4 N# u: w+ l% W+ Q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 {7 Q, H4 x) W. d+ ]. g5 lif (trade-record-one-j-l-len > 3)
' n1 p0 s9 J9 S- K[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-one5 [) D" u' b8 h9 u1 R" E
let i 3- i. @( T. Z% k9 `1 }
let sum-time 04 k. R# D+ i+ C1 O' n- B! X6 U- h
while[i < trade-record-one-len]
, d: T' ]  C5 P/ S. u% ~[) B2 B6 T) z+ h- {) B" x
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  V1 B( o: I: r2 t, v1 b% i" n
set i
1 |7 W# ~) e- Y( i + 1)
, T: J' S( c2 Z3 U
]# Y8 F8 D) A3 z0 H5 ~" A
let credibility-i-j-l 0
8 `" B. v; s8 n% y) s; V8 J;;i
评价(jjl的评价)$ B* _* t# I  Y) }
let j 3
, r* u$ J7 _. D$ b; H8 T8 tlet k 4
9 }7 M; e1 ]. P/ mwhile[j < trade-record-one-len]+ Z+ p9 w4 c3 \3 L! `
[
( I$ I( o) j! y1 ~) `/ qwhile [((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
* J; c, p  x; P$ T7 f5 X) o9 @- rset 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)
+ W+ K. s* Z  H: n' Vset j
+ \! M% l5 Y3 }6 v- K3 g( j + 1)
. c/ |6 B& ]7 Z4 u
]6 _/ {, A( F6 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 ))
7 I" v* ?. T; Y1 a7 S" z- z  r5 F- ]$ J7 E8 j- b2 a  `0 q
0 }- y, e+ D" J  O
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 |" M8 R8 Z4 T9 [0 I;;
及时更新il的评价质量的评价
  c2 N3 I0 d! k, m. t% T- kset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 ~2 |/ d" T+ G0 g3 t/ }0 C5 bset l (l + 1)
5 ^7 t/ ], \2 B5 S0 J$ C]' d0 x2 e; f3 O8 Z; M
end- f! a3 f( s, t5 H2 I

* b) g# d: [$ k& M$ J4 V- @" e+ h' y+ Hto update-credibility-list
. j6 T7 K/ ?5 p, E7 j/ R9 z0 mlet i 0' O2 k# R% x' Z2 A: l
while[i < people]8 N. g. l# _7 t( J4 Z4 ~- }
[( s1 b6 w; X- o, G+ ?
let j 0
6 l; O2 j: l3 l& N) Y& d' Nlet note 08 u- L9 @. @& j7 w* H, o
let k 0& a* i. \+ W* C
;;
计作出过评价的邻居节点的数目
: L, k( ~& y! h( S) gwhile[j < people]5 N% p' R' [3 `8 Q* M6 ?& x4 n
[
7 s# Y* x. C4 \# _$ G; tif (item j( [credibility] of turtle (i + 1)) != -1)' `2 g8 p+ z) v. v  ?
;;
判断是否给本turtle的评价质量做出过评价的节点4 B9 K) \/ ]5 b  S
[set note (note + item j ([credibility]of turtle (i + 1)))3 O5 }0 m9 N$ Q+ v- ~, k, f$ z" z  Y
;;*(exp (-(people - 2)))/(people - 2))]

; E5 O# V2 I% E  z# w* Dset k (k + 1)/ f9 [  _2 s! Y- M$ `1 N
]7 c) c' m5 T' h: E$ i, O
set j (j + 1)
% L2 [( `# d  _" ^2 w5 W: T]. _0 D' x) D* V! N( Y
set note (note *(exp (- (1 / k)))/ k); a5 i, q% u; L* g* N& A
set credibility-list (replace-item i credibility-list note)( _* v, f) a) ?4 r& l  m
set i (i + 1)+ }; x- |/ F2 D+ M, _* }) s( K
]
& _( `3 o" _2 ]4 Z4 q( e- dend
" l1 p6 R9 p, x0 z/ t; c! j- h) p6 A6 E" p. R' |; B; z4 U
to update-global-reputation-list
+ g/ Z/ u9 O. Z  z, Blet j 0
& b4 o7 m/ g# c+ D; O* qwhile[j < people]
$ I7 M" A$ X. t8 i! R[
( |4 P9 e0 }0 Llet new 00 }8 q/ d) J  }
;;
暂存新的一个全局声誉
5 I! n+ F" ]+ _& j, x" p- ^6 r& xlet i 0* o" z- x! W7 G$ X
let sum-money 0
3 m; ]! C% F. y% C, xlet credibility-money 01 S1 u, H% D5 A& }3 t3 L  b' U
while [i < people]7 Z' Z7 m  t- w  e" J
[
5 v7 R3 H2 {( g, t6 R, A* c1 N+ bset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% A+ V+ h3 s+ r, j8 R1 X
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ z& L6 q! {6 B) x2 }; f: A
set i (i + 1)% f" |% [3 X  w" R6 i4 M5 H
]' y( j, @" i8 {1 z/ o; M4 J+ k  z4 Q
let k 0
! }, s5 K2 X6 H0 }( |6 ~7 J: Wlet new1 0
. ^* q& _" w; ]! s, I8 i  Lwhile [k < people]* O/ N  x5 t0 m3 T1 p0 d1 a
[
8 b* ]$ i3 u, k% a0 E! L/ W( B( bset 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)
" h5 D3 m/ H& P& Pset k (k + 1)# s. {8 ?9 i1 v2 O
], i3 L1 G1 B6 A3 _6 f
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- R% O4 {" W( @, Rset global-reputation-list (replace-item j global-reputation-list new)
6 Y7 N( r8 Q! w5 @3 ]; H) gset j (j + 1)  k) t4 ?* H4 C$ ~( v
]
2 @$ O0 c: d" X/ N+ I8 \end- N4 j+ x: `2 X$ |4 h
8 {& b9 C! Y" {3 F3 w
' z% r* E# w4 A& o! V6 S  s# L: `- F# I

5 A0 Q# a4 }- \( e, F. p5 R2 Kto get-color6 L5 l' Y: V/ U% b! ], Q5 R
3 U5 U2 ]) S  V. l5 U7 N  r
set color blue
& v6 V# l6 a, x/ _  s
end, h+ H1 e7 ?; [7 j
! y4 S' h# G1 a/ n& Z5 a
to poll-class
. [% j1 b* @% [! E$ s6 _end
! I( d; w/ F3 w# r- K. U" L+ N- \; V6 ~
to setup-plot1. L; [2 V  h8 q0 Z& s
0 z! t6 s% y+ O8 s! x
set-current-plot "Trends-of-Local-reputation"

( z9 i$ ]  R6 A3 Q2 w& \& [  @, n3 F* J. W) f
set-plot-x-range 0 xmax
8 S( Q9 L+ O) I. p2 H6 Q
: b0 k- e/ s: a4 R
set-plot-y-range 0.0 ymax
5 N3 c% @0 a2 k( h$ Z4 _
end. O3 u/ |1 \* ]
* C' V8 X  L& B, n% h- p3 h6 R1 g' u
to setup-plot2( I/ S; V! W9 r* |, R8 m% W, a
) p% P7 @% i# Q' {# C5 L0 K/ I5 i" i
set-current-plot "Trends-of-global-reputation"

- ?" q+ w/ u* _5 B: A) e/ j  A  W+ O& J8 S9 p
set-plot-x-range 0 xmax

# X& |8 m) O' L( Q; E' W7 d. P: j" s7 ^' K5 O  i
set-plot-y-range 0.0 ymax
$ c. s9 r; T$ V# h: E/ r. _" C
end5 P3 T$ {0 j, h; r  w7 V" u
* I& |! n  n4 A
to setup-plot3
! W- k$ L3 X  e) J+ d6 \  X& \: l, _" M1 S* k# `
set-current-plot "Trends-of-credibility"

) R4 e* q3 s' Q" T5 L. v
0 }1 e8 F! s4 I" z9 iset-plot-x-range 0 xmax
2 i/ ?- w; H4 n  y( n# g
# s) T$ f6 W5 k" b9 x: ]+ j2 t% a
set-plot-y-range 0.0 ymax

' `! G$ x8 E1 n0 Pend
" q1 i8 r1 f0 q5 y7 p7 i8 `
3 z( e" Z2 l$ {9 J5 i+ _; D# Sto do-plots
$ h! L3 z% u5 k# Y* n- n3 iset-current-plot "Trends-of-Local-reputation"
# E; Q) N, [$ f- o; s! h& Uset-current-plot-pen "Honest service"
: z. a& K( v* w  w9 L9 p$ {4 Mend
' ~& [' _2 P- @' H: p4 N, {( o  [: R& G8 H8 f
[ 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.: U4 k2 e0 _$ Q0 {1 C1 H3 u

* R4 D& [, C( I" \: `# z. K这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

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

运行不了

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