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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:4 S- x3 g: E+ X# [
to do-business - X; X1 d2 d5 K) g  W
rt random 360
( ~! u$ n7 Y4 Y" k+ O" k fd 1& r/ H# m4 G; p& g: o
ifelse(other turtles-here != nobody)[/ j& h) G. U8 _( B) `
   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.
6 Q8 \4 c* K, M, L   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! A* z: k3 g0 g4 r# b, n& _# R+ Z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 h/ `; L9 ~. K/ S5 M8 q
   set [trade-record-one-len] of self length [trade-record-one] of self
; ]% {- m2 h  P; H" c   set trade-record-current( list (timer) (random money-upper-limit))
- ?. b' w2 O1 m5 ~. ?! C8 r
7 z" p. f2 a: ~7 G/ D1 |% {问题的提示如下:) v$ f& g+ x  M- W/ Z# z

4 ?8 J0 G2 m' Z8 d; berror while turtle 50 running OF in procedure DO-BUSINESS
1 G- M. q0 Y/ G. P% B7 Z  called by procedure GO
) ]) b$ _" h1 Y) S! N& hOF expected input to be a turtle agentset or turtle but got NOBODY instead.* i6 E% r: g4 g, a6 @+ l
(halted running of go)
  w* a5 L3 Q7 L9 k) c+ v0 q+ x$ F
1 |' T' P2 |8 u8 E0 j4 P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~~
* U8 j; d  O3 l2 q' T; r  T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6 e0 O4 t. `7 r* g
globals[
) N2 v" p. b  t0 cxmax7 ]5 U0 v. [2 s# C4 E+ A
ymax
9 L8 Z$ j. I2 }7 a; \global-reputation-list
. E; x5 {$ f6 m$ K: @; h  m- E* _1 L* D  X: y7 W# P& x
;;
每一个turtle的全局声誉都存在此LIST
$ C, ?% t* w1 a; Y( O4 q& {5 ycredibility-list3 m3 E* H6 \- a, }8 [
;;
每一个turtle的评价可信度
6 Z7 L9 d; B2 j2 N6 w' ^honest-service
$ m9 D5 `9 b5 N7 Q; lunhonest-service
1 N' i/ j, V2 C' Y1 R- ?" y1 Boscillation
( U8 O" w3 H- k7 Krand-dynamic& ^; D1 ^  E- ?7 B: z/ `
]8 F+ f4 g! k% K$ w; [
) M4 |( W" H0 {: a5 y
turtles-own[
4 u% g# C" e1 Q3 W! M( Qtrade-record-all
& Z, A: x" Y/ J6 F* X; C;;a list of lists,
trade-record-one组成
' I# A' b3 V" F9 D3 A" Qtrade-record-one( l$ i# g4 E! t' B
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
+ i/ C8 r2 w' {3 z% H: P
+ z* I1 P# I2 S; |; H/ 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]]9 b3 m" m" {8 O3 c0 {3 W" t
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]
' P4 p9 x! ~  [) D8 f+ C# b2 rcredibility-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
) f+ W5 B1 s' \/ ]% Lneighbor-total
0 W6 b; F! t. H: x: g" n- ~# ?;;
记录该turtle的邻居节点的数目
& ^& C. s: b, f1 e/ Ntrade-time
- m) V* E0 t* n+ p3 j5 A. T# h. C;;
当前发生交易的turtle的交易时间$ r$ U$ l& v, Y# j* O% w
appraise-give
- |3 A+ x  @1 `- D' e, H5 p2 {1 A;;
当前发生交易时给出的评价+ ]5 P$ K, ?1 M! j4 i0 ~% x. J4 v# I/ A# L
appraise-receive
6 F+ M4 q- n$ T9 g2 s1 N4 X;;
当前发生交易时收到的评价6 f8 J* S5 V8 \: e- k9 N
appraise-time
' L1 e3 f" `/ d4 K- Z( H% j;;
当前发生交易时的评价时间( R/ j3 P1 z# K/ Q
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ p* d. P8 v: Y/ atrade-times-total+ q* {; O3 M  C% D5 m( V9 ^: `; V
;;
与当前turtle的交易总次数; y% t( L- J7 @( E! S; C6 g
trade-money-total% p5 S8 [1 n1 F
;;
与当前turtle的交易总金额: z7 d) N3 k' ~- U
local-reputation; q3 s1 G$ L0 X- s3 I6 F$ N, z
global-reputation
) ^# v' q& Y+ A* {. o) N$ I( S" }credibility
, ~7 f5 b: A1 o' O- R: v;;
评价可信度,每次交易后都需要更新7 F/ v5 r- I3 S  z9 z5 C
credibility-all$ V" S3 a* ^( ^( u5 V
;;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+ U2 N! }! V2 H7 a( P, P

5 |1 v0 M1 J  A0 S  [;;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) e* z; M( z3 S) W' U- c2 u% `6 v9 [% |
credibility-one& Z* M4 w6 f( H: w; ^, q$ C' b
;;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
9 r! ]2 z! W! L0 `' y+ Z, fglobal-proportion- |, h: d% O& F9 Q
customer$ B9 h' O5 s7 y
customer-no' ?& p- @; c- N8 N4 [
trust-ok
4 q8 g2 n1 Y( E& N7 g, p0 Ntrade-record-one-len;;trade-record-one的长度
' g' B) m. L( t" J]
8 Y1 B* X; }  R: Q3 Q; N8 A
3 V+ {) c' J- m/ V& q;;setup procedure
1 q$ T% }: m( a1 S) D  Y
: Q( R% R5 ?4 Q- V- @, qto setup( n& `2 f0 h" T! U( n1 Q

, |+ O- H8 R2 J1 G" qca

* l. Y, ~1 Z( Q' @3 ?' T  c
' r# {0 n4 ?+ Xinitialize-settings
8 R" o/ P0 i3 z1 A/ R4 b2 Q
* G+ ?9 ~- d; V# i5 R! Y3 a
crt people [setup-turtles]
* `& @$ N+ p. S, ~8 ?4 ~3 a* {
- S# j) V3 [& K( J
reset-timer

. W) P: `# M' P, u" H& ]. ?; R1 c" C. V; @$ R* w/ Q& A- A# K9 b5 e
poll-class

) _2 V& q" o. ]3 B( R
& t. L; k3 ~% J# x8 Psetup-plots

7 ]6 E2 W$ n' Q/ C1 z1 L8 p# ^! p7 S  f! V) s
do-plots

6 M9 o2 o: q0 \end
; H$ T' l" O; e
) a$ I. D1 q( b1 }3 Y' u  ?- s, H* uto initialize-settings0 }0 U  d& _4 q

8 g6 W3 _" ~+ r& R& x: s$ E( Nset global-reputation-list []

0 g3 q$ O3 q. r2 i& H
. d1 ]( @& F# z8 M  iset credibility-list n-values people [0.5]

+ f8 {; p8 g) I7 _3 [2 {5 ]; L* P- z
set honest-service 0
* S- E0 ~' O' f2 {

0 g/ T6 ]+ w! r, q0 Oset unhonest-service 0

5 D1 i. g: p! W( b+ J" a4 S/ B6 H/ b+ v3 I7 s) H+ F) \6 s6 D
set oscillation 0
9 p9 H; v# g$ S4 z6 i5 h  v! t4 g" S
# c0 c% a/ u  I- J
set rand-dynamic 0

$ B9 [( [& `, ]) ^5 Aend
4 H2 k# U" E: t5 r- k7 g- ]0 O
4 \# h4 H- t% K) ^! S; G# Sto setup-turtles : K& i3 C% n- n5 S2 _& H
set shape "person"
5 j8 R; H3 H7 l/ X+ qsetxy random-xcor random-ycor* Q8 X" P- u7 E1 S; a; ~4 P* a
set trade-record-one []
. t- H, I1 d4 |% ?/ i
9 k2 Z6 c' L' J) Z
set trade-record-all n-values people [(list (? + 1) 0 0)] ' d2 T4 P2 m5 m- S/ e- k$ S. ~

0 g& m; S% K1 ]8 pset trade-record-current []
+ m  v2 x1 K, m6 M6 F0 lset credibility-receive []
8 e. P. e" M( X1 g  h6 F6 tset local-reputation 0.5" c( d; Z1 \& L, t' `1 V. s
set neighbor-total 0: r# h- ?( k* O  B; Z7 T) r6 G
set trade-times-total 0
3 J3 f1 n. P4 ^1 nset trade-money-total 0
/ z1 P: ~5 e! e: X$ tset customer nobody
. [- P, H! E% ]! G5 dset credibility-all n-values people [creat-credibility]
+ r4 O9 B% W( ]1 ^, o& sset credibility n-values people [-1]- g- y* C" R2 }, e9 x
get-color
# W3 L9 A$ l7 C" N5 P
' z6 `" W6 @# `1 C/ }: }
end( z2 i1 d' x! S( q

6 q% N: n; ~% p5 G9 ~to-report creat-credibility% L. @( P6 _( |1 C5 v% _: k" W
report n-values people [0.5]' L7 v6 Q* a# _; Z! z, R, _
end
6 S6 U5 y2 l, u* o
0 K6 T" P6 s8 N) qto setup-plots
. b' |; i! S! D# Y/ N+ k) N
- `# c" \! ^# e' ~set xmax 30

9 o3 o' @, G: v  x7 P$ ]  h  M1 T& ?; b
set ymax 1.0
* a7 b. t- D1 ]# L! X) Z, v1 U$ S
* c/ C' G6 F1 F
clear-all-plots

, \. b: A6 k, {7 S" l9 r; A3 v8 t' C0 J% u$ g+ j% z1 Z
setup-plot1
( x, Z7 j( t" q' g) o5 d: ~
% P* X1 J) M# }3 O& t# I3 D
setup-plot2
& ~: |/ x" X. n/ c
2 g' _$ T6 }* N
setup-plot3
. ~1 p% W1 \; Z! x
end' m  J, w+ g$ V6 z, k! v, I

  h: N6 a2 ~' j4 C1 \, S2 G;;run time procedures
) Y0 @( R  n' P- e
8 v7 G9 }0 ^8 dto go
- a7 ~& W5 T( b* }/ v1 p: D
; `# V. {+ Q; xask turtles [do-business]

' {/ Q( [1 d" _4 r" Cend& i3 I3 l1 N3 ^+ a' H

  Y. R+ M1 `& _5 Qto do-business ) [7 |6 v  p" A) V7 _8 K. p
9 X3 y% c$ S( X8 H0 ^$ h, F1 R
$ h% i/ |# ?) z7 V3 W
rt random 360
5 P; }% Q2 k* i3 v
4 Z" K0 h% Z! |2 [4 q" t/ J
fd 1
9 I, W( f; _  z5 l* f
- Z" s4 {9 p2 h$ F' R$ h) {
ifelse(other turtles-here != nobody)[
" M/ b9 h* W7 Y- |# y
% ?: w: z% f" c  Z2 S
set customer one-of other turtles-here

# o7 P: l0 l" s( M( W% J/ T" q; R$ C7 ~& ?$ [
;; set [customer] of customer myself
5 U" ^1 ?- X6 ~& ?) I+ ?; |$ W

5 {' H" D' c( P# ]( T8 r3 a$ mset [trade-record-one] of self item (([who] of customer) - 1)" i) L: e+ t' I- g$ h7 n+ e0 O
[trade-record-all]of self. H- s$ A1 L' h3 r
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
) f- c8 P0 B8 x" _! v
( F7 k7 ]; D9 y! s5 N
set [trade-record-one] of customer item (([who] of self) - 1)
- x1 Z2 R8 n7 h* V# M2 b[trade-record-all]of customer

8 i; Q, ?" c3 g( r  I
( G6 d( O. a- K9 S- P6 r( Gset [trade-record-one-len] of self length [trade-record-one] of self

/ V' `6 ?# A, O# T! I- ^; {5 q1 f7 H# n/ z3 ?
set trade-record-current( list (timer) (random money-upper-limit))

, F$ `! O6 Y6 f6 j% v
3 s$ T/ B" n. p2 z4 f# K' D4 U$ Lask self [do-trust]
" h3 \* i/ C7 @5 ^;;
先求ij的信任度1 K; q4 ^0 n1 S% p+ H

' k8 R, s: k& n0 Qif ([trust-ok] of self)
! Z$ ~# b8 j. D; O, };;
根据ij的信任度来决定是否与j进行交易[
" B0 Y! g3 M, j( R6 l/ Kask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 e5 i# _5 D! t
( u, p& [0 M; y5 V[

% t$ h7 Y$ f( z, u, F4 I( K, c7 o7 K. g3 G$ T, _
do-trade
& E& `1 Z4 Y' Z/ ]7 u$ V' J" b
8 Z5 Q& p$ m) d) e
update-credibility-ijl

9 _+ C* y; ]6 p; k. h
3 z* ~9 M3 g8 H8 a) X+ Bupdate-credibility-list1 }- F) L3 v1 y7 _% _9 ~2 o! @
& }1 w7 q& L8 E5 F5 T  i& S: T, F: {1 z
4 i/ q$ n6 P/ W5 J: a& ]
update-global-reputation-list
( D3 A0 o7 @; x. k7 k
$ q; K' u1 l2 y9 W* v3 K
poll-class
5 z+ g* O2 X5 Z3 Y2 ]/ l
( J; L9 g" M( t" A( [
get-color
# _8 W$ j8 m, C* [  B4 ~, u

; {. k8 Z4 ^8 @1 N]]
1 x2 D  b3 O, m% y9 s, O  c% [3 |3 J' h$ c8 ?! z' V( n" u
;;
如果所得的信任度满足条件,则进行交易/ E- i, a( s, k9 P! L

8 \' n4 q/ B8 [0 Z[

( j8 q9 W( N6 K# A8 x7 ]2 j3 _. I
rt random 360
& \. ~" _' q# @

4 @4 _8 Z' ]  n8 f( O7 A; y$ Qfd 1

" N2 P( r- w+ d% t4 _/ {+ B* D+ l" u4 X% l7 h, x
]
: Z  m, i! u$ c( Y) j- J8 _

! |4 r8 h8 p" C$ q- Aend
) s* A# w* V" T3 [7 i6 O1 _( I, v

/ z" L; P# j. ~& I" Pto do-trust % J# p9 ?. Y' \) r- Q
set trust-ok False9 p9 m1 O$ a- }$ I' p# \3 A9 [

6 ?3 T6 p# a9 `- J1 Z* v2 P; P
+ C* ^2 ?% f; e9 U1 h3 q
let max-trade-times 0' [6 O# W7 l! r- o
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 l- V0 F8 b- B. v
let max-trade-money 0
& y6 L3 b  K9 n1 d3 Rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: @$ g  D. m$ g' {" n4 nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, P4 c- ~1 h7 l: \3 O# f7 l( R$ X9 C; K: r; j# p2 x3 m) v# }  s

' R, z* y1 G: @& m+ ^3 N; bget-global-proportion3 F# Q  f0 v0 X# [; v
let trust-value
; {4 V8 ?6 w$ Nlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

" k- l! m5 P5 W$ K% Uif(trust-value > trade-trust-value)
; X9 l+ b6 n6 [2 \% F[set trust-ok true]9 ~4 W0 V+ }' i; M2 |
end
& m2 @9 w7 J1 m( u: a  h; ^$ O
to get-global-proportion
, x# I$ j; q. oifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ g7 T4 D8 K# H# s' G% ]
[set global-proportion 0]7 H1 V9 d- k  k9 E( o6 v
[let i 02 h3 v( ?9 S. l) k9 w; {
let sum-money 0
# P" U8 _, S$ o& e3 cwhile[ i < people]0 q3 b# S3 o% }4 ~( S, R
[
7 |# I' I" p/ _! V+ I1 O1 pif( length (item i
0 D6 R7 F1 ], ?0 f# h+ y/ Q[trade-record-all] of customer) > 3 )
" Y7 j5 }& h+ y# ~0 R6 _
[/ u; ^8 _; D2 Z' O
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))+ l7 S* J; F- F3 t, D
]+ N% R7 K' E% O( m9 O
]; ^2 v- F/ W5 e$ A' I% U
let j 0
2 V1 {2 o4 y& C  Wlet note 0
7 x* Z1 a# ]4 s  ?while[ j < people]
$ Q8 t+ e6 J1 T2 \# `[
& o& B! f0 V) Q: |# c# @if( length (item i
' p6 Q( _% r5 `( T* m[trade-record-all] of customer) > 3 )
2 p# |8 Q5 I4 b7 ^( w3 X+ m
[
: [8 r6 `8 I* P7 Q# jifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 ]2 R0 A0 g: T; z9 S1 H[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& T# {4 n0 K8 D1 L
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  m# R) x3 k  K8 h! F* j
]
. }% A- U& ?& S& K4 i- I! S]
' y3 A9 D$ X' W! k7 ~; Y( tset global-proportion note
6 W2 p* ?2 O' k, R0 y]
1 a* [  V6 E/ n; mend
  [$ D$ ?3 A. Z* M
2 H  q' i, W9 J: {! ]/ yto do-trade0 d8 Z! T/ D' \7 @5 {7 Q; ?0 T
;;
这个过程实际上是给双方作出评价的过程% B% g3 F/ x& _
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: m3 a2 c: s5 Q  c6 G2 C
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. L5 r/ U- y% v% w( oset trade-record-current lput(timer) trade-record-current
* @$ U& D1 M6 R, g( Y;;
评价时间
: X. ?  L- N1 a/ o) A& Xask myself [/ `! m$ r! u8 x/ k& G6 B6 q
update-local-reputation9 B# }( n8 f/ @# e2 N
set trade-record-current lput([local-reputation] of myself) trade-record-current3 F* u# D, I* h
]- Z% a. D, O9 Z/ Q
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 Y* i$ m1 L! ^' G# H" W9 M& _6 P8 A2 E
;;
将此次交易的记录加入到trade-record-one
% {, s( G) u$ D' D7 \set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). G3 D, I1 K1 I1 r, F0 Z
let note (item 2 trade-record-current )* C) ~+ _& Y; V6 B
set trade-record-current
2 b8 {1 ^! s  P8 ^(replace-item 2 trade-record-current (item 3 trade-record-current))
& c. n8 D6 T+ a- E4 C. i! e! n' X
set trade-record-current: A) W. T8 w( {- k
(replace-item 3 trade-record-current note)
0 n3 M9 F3 T; t* z
; d3 Y) F4 Z5 O

# e) U: G) O. I- ]2 ^: G  `  u9 Qask customer [% ?5 r5 A" h) T# t6 Y6 P( P) G6 L( ^
update-local-reputation3 x3 l: ^( i; h$ i) @7 }' N
set trade-record-current* d# {9 n* d* `- e1 \
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ x3 e: ]! O& v6 o]
2 a; ~+ J% C% B2 I4 Q! b. \3 B4 a( y% b+ M8 i/ d0 d$ ?! j
3 M9 Y1 J6 w" q0 I' D
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, w0 Y) A8 ?9 h0 o) d

2 ?# v! q1 t% p' B$ Wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
' }8 d3 J& t6 U3 K/ s;;
将此次交易的记录加入到customertrade-record-all
! v8 d/ v" u2 u7 O9 S/ f" L  v* {# w# Zend
. \0 I+ a/ ]+ b# m# ?- n' z1 v+ H% n
# N; P3 L& \& |% ^! \% cto update-local-reputation! m- @# |& o6 N3 [/ N: G8 U3 X
set [trade-record-one-len] of myself length [trade-record-one] of myself
. n+ B- T0 \0 A
# s7 ~' y/ R2 ~, P7 d: q  a; g2 n: q! c: \, t# D$ X( K( c* f+ }
;;if [trade-record-one-len] of myself > 3

) M* J5 ^1 ?- O6 K; X* H+ Rupdate-neighbor-total
3 ]4 s4 _2 p; A9 x;;
更新邻居节点的数目,在此进行
) c$ w6 Y- r7 Q$ E5 X) w" `let i 3; F! Y: K- C# V% ?- H# K
let sum-time 0
9 j5 u, z9 F, C5 \+ [  n: k% Owhile[i < [trade-record-one-len] of myself]
- I. W: H; `- e9 d' C" Q[
' ]  A6 d& j1 Z0 lset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 C( k& d) |$ f: S% rset i
/ z. k' h  U# x. y3 ?2 f- L( i + 1)

* ~8 R5 {5 F; ]# H! w7 ?  B' F) a]
' }% {0 a4 W9 O# D/ S! F! wlet j 3
' f2 Z/ p" m" [7 R5 H2 zlet sum-money 0
* l7 O" L/ g2 u- k" {  B' owhile[j < [trade-record-one-len] of myself]$ X! |5 S1 ]0 L: n$ U$ H
[, R* Y/ F1 @6 n0 |- a# ~% C( C+ \
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)
- b/ t2 L* R; I& o5 T* U, o, nset j1 q8 e9 B+ C" d+ R/ F3 V
( j + 1)
! Y* Q( s, j0 e
]
5 d) I' v: W6 ?: A/ E: Jlet k 3( T! ]" O* B6 D1 [$ C( H
let power 0
! ]  r7 e" h3 Q8 flet local 08 c# a; t0 @. E: W1 ^, @
while [k <[trade-record-one-len] of myself]7 y/ S; `0 y; B: Z! @3 e3 S! \+ K
[
, u0 p/ P( t3 M9 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)
( f' x- V9 G% b: q; Z! b6 ^set k (k + 1)/ E  o9 u, d! H- F( I- C, K! A! |
]
9 c( a4 a& v; ], Y; w3 Kset [local-reputation] of myself (local)
6 E% l8 p* X) o# j! _- Z* @end
1 g- f8 @! H1 ^$ p6 ~
5 J! z6 t+ Q- ~6 Dto update-neighbor-total; p$ c: [+ e- c3 E/ n

, M! C/ T; y0 {if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 f2 f9 y2 \; K4 Q% M9 R/ r
# J- y5 S; `: e# Z0 ?

# \' |# N/ ?* Z0 W& ^* b* Gend
: ]& M3 T& r, Q$ g) P+ F$ {4 C2 g2 Y! G3 U9 ~# b  I, w6 @
to update-credibility-ijl : U" a& [7 @6 O) }. W

. X0 l' k8 Z+ 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。
0 d7 p6 y- E2 n( c) p/ k+ n9 c2 Glet l 0& G( u  R1 n8 d
while[ l < people ]
, \  X  m) t: f& ]$ O;;
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8 C/ i5 G: J: g8 w4 a5 M
[
/ \# \. _% _+ ?# Clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 k, P% Q7 Z( R8 N+ q
if (trade-record-one-j-l-len > 3)
) I# k4 c- N( q2 {9 j[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( i# k; p6 k; V7 C& J: P1 e, Q9 }
let i 3
* |3 X: A( C5 x# Z8 D; Qlet sum-time 00 B6 o( V: H  ~! \: C. G: ~
while[i < trade-record-one-len]* u0 L3 {, A4 Z. P% }& l
[
9 z8 z* F0 G. g$ L) ?% Yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: P5 `, L, ]# @- bset i
( j! n0 `. ?, T, f" j3 M( i + 1)

6 N  v# ]! X) R]
: _4 v+ D( B4 Clet credibility-i-j-l 0
# J/ h7 S4 [6 h: X8 p* @& Y1 k; v;;i
评价(jjl的评价)' E5 ]( k6 w  I% {! D: A" b$ R) ]9 `
let j 3, M/ C7 }+ \2 u  I9 {/ \
let k 45 f0 R+ k5 ]( S# h% I+ w# M. y7 s7 _
while[j < trade-record-one-len]# C, M) x' s7 J( k$ U  G
[5 V6 C. l. ~* D( S3 A: a" o# {2 C- W
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
3 C& H/ E4 V0 L0 @* |5 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)
# [9 Y9 t# p: C4 m0 o8 r/ [5 q$ Zset j
: i4 y; {: @4 ]+ `) S7 l7 |( j + 1)
) W- z8 W. t; l. O$ _4 S2 M* V
]. x+ K1 k  t+ _8 H0 M
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 ))/ I3 B$ X  o5 K9 V
9 ]4 Y+ i& R. Y4 O& D5 G

- B* ~0 D4 B% h9 I# Plet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 y0 q6 P: y5 k
;;
及时更新il的评价质量的评价( S1 [9 w, @& Q* t
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]3 h* @' J& d% J9 n* N- E
set l (l + 1)6 D4 U8 T9 @0 H: h" n
]5 h/ k1 C" E; Q, k7 z5 v
end
; [3 H" R: ~+ N( z2 j
' d! f7 Z9 ]2 R- qto update-credibility-list  J8 K( v" D4 Q( C6 u
let i 07 h4 v' a  a; k8 S. J! n
while[i < people]
1 O, D9 f# H* |  Y4 b  c: I, q[& C" @7 ?% b) r* W5 {! [
let j 0
7 I6 @7 \5 i: S+ A$ jlet note 0( `- a* H% t8 I9 Y+ F- [; f! ~
let k 0
7 T$ N! ^, y+ a  @1 f7 b- Z;;
计作出过评价的邻居节点的数目
+ L: j, ?$ H+ U- q! mwhile[j < people]
" L$ C1 m: ]" `- a# L, j) |[
& @. h0 x1 g1 h( P4 i+ Q2 ]' uif (item j( [credibility] of turtle (i + 1)) != -1)
) o7 l* n' Z7 O;;
判断是否给本turtle的评价质量做出过评价的节点; [: o/ }( ^2 k4 T1 ]( @
[set note (note + item j ([credibility]of turtle (i + 1)))! X3 {' ]/ s: ~. \* J6 ~( Y
;;*(exp (-(people - 2)))/(people - 2))]

# A1 B" L) g6 f$ e8 M* mset k (k + 1)
1 S. V5 |7 L6 v) C]' W0 R( G1 Q  ~
set j (j + 1)
- ^& ~- b) [1 m+ B7 e+ A. m: m]
' N: d% V( x( Q# yset note (note *(exp (- (1 / k)))/ k)4 p" f0 ^7 v5 b: A4 X9 D
set credibility-list (replace-item i credibility-list note)
, T" v2 J; a1 {% y4 nset i (i + 1)
* a. a  h+ S; G0 j% t]
0 R. |& \' F8 Z, d! m. A, \0 T/ p& `end
2 e9 m1 K3 c: k. v9 f& r, a7 S9 V/ ]* G( t, l
to update-global-reputation-list& o# P8 O9 I2 Z" ~% H
let j 0
% Y5 N: s7 n0 R1 [! Q: X) Wwhile[j < people]- B2 a8 B3 E0 k- ~. J/ w- Y
[
2 N1 ]6 U# y' j) Blet new 0
0 Q  ~0 s4 M" \7 E) {' d;;
暂存新的一个全局声誉9 p. c( U/ B  \' x4 U! Y
let i 06 n* M4 w( v; \0 a5 ^1 p
let sum-money 0
4 \- Y- V5 z- _! A! flet credibility-money 0
9 e3 o3 r, T) a% O9 P* mwhile [i < people]
  z  x, Z9 x  x  M. F* o; G/ ~[
) Q* O: o! z- Cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 u7 e) P, \6 Bset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 d9 ^) Y; u- H/ M& yset i (i + 1)) X" X6 H9 g; k% u
]2 b! t( F/ O" t& G& R
let k 0/ M0 A& E& y8 B9 T3 x
let new1 0
: s' ]+ N& D+ I; Mwhile [k < people]
! e1 _& h  g4 r# W1 S) x: |& b3 |[
" C+ F# S$ B1 {6 y# _5 zset 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)1 v" u' m1 [# a- C  M  L
set k (k + 1)  G  V6 H7 s7 M4 p
]1 Q2 b; w$ ~1 i8 b: L
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , N% n) ^$ d) k$ X4 v
set global-reputation-list (replace-item j global-reputation-list new)
' x3 ~9 X3 T, t$ {! h* p) Qset j (j + 1)
3 f( b( K( [9 _' X7 h/ h]- I5 q1 l+ g, j' ~0 x: Q
end
  @5 D! o' s6 S8 N* J  d4 Z" W; h( x) @

8 C8 U5 v' A6 @
  _: _" _  b4 nto get-color
" |4 q' {8 h7 u% V0 M5 R
1 B! C0 b- t  }, R7 E1 Aset color blue

' [2 y1 @8 |# w0 {1 H. p& Pend
% b5 P  @  M0 q# k  p$ O9 o1 N  e1 f6 K6 T
to poll-class, L( B" P! S$ w, Q7 a* N5 c
end; ?4 i3 ?, J; B( t0 }0 P5 d/ i

5 n0 j% j; F2 \- h- F  t/ o7 G- ato setup-plot1+ R' R" t* v7 e& i) ~! m: G9 b
5 `2 Z/ U  V& s% ]* G
set-current-plot "Trends-of-Local-reputation"
; a: ^) f9 X" K$ ?

( S# V1 ]4 K  X! fset-plot-x-range 0 xmax

- ~; ^1 U1 j$ a6 W5 `8 s" p. n8 ?  \5 V2 m1 ]
set-plot-y-range 0.0 ymax

4 u4 w+ t. ^3 u* Cend5 e4 ]" v/ i/ E4 n' _# X
, q8 U, j6 F6 u- R
to setup-plot2; h: f/ E* M( A2 f' s
# E6 N& O, [8 P6 q
set-current-plot "Trends-of-global-reputation"

* ]+ ?( y5 c4 Y
" d/ x/ i* S7 E/ \$ Rset-plot-x-range 0 xmax
8 L+ h1 y/ T+ p- m" j! W

+ t3 `- f0 o. f1 rset-plot-y-range 0.0 ymax
( ?% G4 d4 e8 I, D
end
9 N& w$ _0 t9 f9 n( s% s4 R0 T1 L7 g$ `* E9 n8 @6 T! v8 e
to setup-plot3
% c3 q0 c- f6 D! J0 u- h
" s% M  [' `1 v) g% eset-current-plot "Trends-of-credibility"

) e* {: T" m) @8 ]4 b5 d) j" g- @* `2 j, E' S
set-plot-x-range 0 xmax
3 T0 c$ [7 W. I8 h' B$ @

0 U9 h4 U/ T0 e7 {6 J& A2 D: |, gset-plot-y-range 0.0 ymax
1 s+ Q! R$ I( x/ Q$ N
end
* V7 o' i8 \$ t2 |' A3 H6 E
  Q2 L/ G" o9 U0 A2 fto do-plots" W& h) }2 c7 p/ |& P
set-current-plot "Trends-of-Local-reputation"
8 T& s* s. g6 l  R0 x- Lset-current-plot-pen "Honest service"- l4 _5 J! B# c1 ?0 _# ]! I
end
, E( l: X1 g6 C* O2 h- i% r7 R* h% f2 o2 b: j( 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.# w! f! N6 t# [0 g9 n

$ j1 ]* R- a" q& R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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