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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:
6 Q2 d$ }5 M- h! ^to do-business
+ v, }4 x! B! ] rt random 360
; {4 M+ `: B7 Z6 f2 j+ F  j8 G fd 12 l3 f1 I# j! k4 {5 L* R$ Q" C
ifelse(other turtles-here != nobody)[
0 w) D  y' s2 ?8 l+ D& Q6 d   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.
% i0 Q0 |, }% I8 e- _( \   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 ]% x. K4 \+ @: e8 C6 @! [7 l: I   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
5 l- V/ }% u3 _4 T/ N/ X5 u   set [trade-record-one-len] of self length [trade-record-one] of self# u! n8 s7 X3 v5 r1 ?4 m- S
   set trade-record-current( list (timer) (random money-upper-limit))5 }1 i+ T' q5 w& Q& h4 e9 K
3 J; @; `' M; a  ^9 z! p; u
问题的提示如下:
- G/ i8 c8 [1 j
9 e8 E( z. F* `" G1 |error while turtle 50 running OF in procedure DO-BUSINESS
$ f0 A. P& \. U% S* C$ ^- A$ ^  called by procedure GO0 l: i0 R: I6 n% p3 y# k9 ]
OF expected input to be a turtle agentset or turtle but got NOBODY instead., F4 w9 K. h; m5 O* K9 s' |0 E
(halted running of go)0 m0 d2 b. L& o. P/ @" s4 o' n, }
3 b: t+ N0 l0 R( G
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~~. m$ X% l3 {3 j) A) C. O
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$ D9 ?1 ?; b: d  a1 q+ D  L
globals[# w: i; _9 c& r$ X( H# _  E
xmax
/ [; P( a8 i. U: wymax
- _/ l7 N. o4 j$ wglobal-reputation-list) Q* M; A4 P$ O, `4 {
1 @' [" `0 m/ i- i+ }: F: w
;;
每一个turtle的全局声誉都存在此LIST/ F% t7 y! J& {
credibility-list% ~" \+ Y7 V0 T0 i
;;
每一个turtle的评价可信度" t4 `3 O% D9 z$ m8 S) Q6 U
honest-service
( _, H6 T+ ?" a1 j& Q7 }7 ounhonest-service  T" u$ A9 X# X: N0 M3 A8 Z
oscillation
2 W4 l$ U  f# F0 z( grand-dynamic9 g6 P  m% q! S  l0 x
]8 S6 s* ]; _* L7 r
2 T* B5 K% l5 z& ^1 @% ^7 x
turtles-own[
4 J. h5 f" l3 a( |) Ytrade-record-all# E# B" Y# g# N' b& E4 g
;;a list of lists,
trade-record-one组成
0 H1 d3 [2 C& F7 G4 z6 \, g$ qtrade-record-one) k% k: i- ]3 k$ `
;;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 j  S; y" L  W9 S+ |- j3 I

' E! e& q( Q. F* A8 c  d: b8 G; H8 F;;[
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]]6 d' ?: R. l# I9 o2 O7 @* [) @
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]
- i1 b& Q; Y* F# v( fcredibility-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# o1 V. Y- _0 @  M  C* K. z; q
neighbor-total
0 g0 V0 O) v% y7 O! N9 W;;
记录该turtle的邻居节点的数目/ |* J% C% N# _' S3 A
trade-time
. w2 w3 E7 D. x& c5 ~2 _2 U;;
当前发生交易的turtle的交易时间
; S; D2 g( j; N9 L  ~. Kappraise-give! `, @: r! O1 k* A5 u! M7 z2 }
;;
当前发生交易时给出的评价
$ m1 B! C8 R1 i6 A! Fappraise-receive, G6 M7 p$ U. }2 l
;;
当前发生交易时收到的评价; h$ c; U' Z- U  s
appraise-time
, d2 E' P$ \- G" }2 i;;
当前发生交易时的评价时间; a6 Z6 S6 Q  n- T  f2 j& y& D
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
) H8 i# N2 t$ p' O- V# a/ k. |trade-times-total
3 n/ \$ }  t$ A; @% t+ z0 X) p;;
与当前turtle的交易总次数
" X( \+ d4 P; c9 ^trade-money-total1 @. t- J( o- B$ o
;;
与当前turtle的交易总金额
) m7 Z0 R3 T8 M; P, w* dlocal-reputation
7 L7 d  W+ G, F2 lglobal-reputation; {3 g7 `# _, p5 G; r0 s
credibility
- t2 z% X/ P( O% `0 D# Z0 q;;
评价可信度,每次交易后都需要更新8 [: v, N6 _1 A* I* Q6 t
credibility-all
3 E5 Y- Q5 x- U# B;;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" Y6 V' h. J4 C) P" j% H2 N/ B

$ ]# [% F3 `: o3 l$ |;;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0.50 Z; K: s8 B# J% `# N' u8 X  ?
credibility-one
0 X* t. O# ~# l;;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people2 k. J' H3 C! q7 ?3 F
global-proportion% N% D$ L% j& r2 Q" w5 v
customer
9 E  Y8 a- y( T2 Mcustomer-no# q. W/ X, o1 Z
trust-ok
8 R5 V5 P& L5 f( gtrade-record-one-len;;trade-record-one的长度
- G) a: v* Z3 y1 ^]
+ L2 q  P8 Q/ v3 N$ @. O0 U: p9 \9 y' Y1 F. U6 D  W- I
;;setup procedure' s* C* ^$ z( z8 b. w- Z: A

( z8 t7 h: V$ M) f8 W( l9 dto setup
, J% @- J( G7 ?3 i
( W) p- R4 ^! s6 M. I, aca
! r4 R8 j6 W/ H. W( P% Z- w
+ i+ v9 M6 B% s" Z0 m  {
initialize-settings
" a1 G6 N* ~+ u8 }

# @4 E) \3 M1 S' Vcrt people [setup-turtles]
# P" ?7 I& E# D# A+ K

/ e; y6 }% d+ T* y* P* T/ jreset-timer
/ r( h4 ^# z8 f0 l% [, A6 _7 u5 U

: O- c" ]  o5 V' h/ u3 T7 Apoll-class
/ m; R2 w* T; v" E9 [3 s" y

/ \4 g2 ]5 D9 R' ssetup-plots
# ]9 S5 ~6 v' |3 K/ Z7 [

6 {; w! I' c& U) ^( j  R! `! }0 Odo-plots

' w- V2 X8 k) C  y- fend
0 e& m! r& A) @$ m+ \5 Z) r7 e1 O  t# S0 T1 C
to initialize-settings
: O; l2 ~. w! u: s, _: V/ ^5 a' D0 x8 E1 }+ B
set global-reputation-list []
8 D& [  |8 h$ b$ k! t% ~
& D% z& \6 j; ?5 Y0 h$ A
set credibility-list n-values people [0.5]
0 H5 f  L$ P; `* I. m1 a7 z3 @9 M

# y( A# B$ R) g! k. Gset honest-service 0

3 g. V0 q  l' U# x: x$ _5 H: j) N- R& ]3 a7 }; Y
set unhonest-service 0
, A- o( h* M  d* q6 s/ q5 _# p

9 X* N% U! B4 Q3 H/ eset oscillation 0
& f; u5 B1 L3 A
$ T/ L+ I8 q: T( |1 z. \' k4 y
set rand-dynamic 0

$ S) e) t6 c. s4 [% U1 qend! B' u3 W7 E2 M0 ?7 j& b, f+ g0 Q  q

3 M# r/ J7 {0 d+ ?to setup-turtles
2 Z) d% ]7 T/ N7 n2 h: U* ?set shape "person"+ |8 H7 s7 N! u! g7 T
setxy random-xcor random-ycor0 R* E+ \; I5 o# C: C; j. n8 j6 n. Y: X
set trade-record-one []+ u. f7 h. l2 D$ j* U" D/ V' a4 p# V

4 y2 K1 c4 x! jset trade-record-all n-values people [(list (? + 1) 0 0)]
, `- Q# s! K9 e- R1 N9 b

% ?$ L+ j! p* y6 ~) fset trade-record-current []
' M0 u2 `$ f9 n7 L; g! y' Xset credibility-receive []
- t8 D5 _! I7 h7 r) _set local-reputation 0.5  E8 I  A3 t( t5 e" ?
set neighbor-total 06 F8 P) g. N( W; }  r
set trade-times-total 0$ H. L$ Y0 ]8 k. d4 ^9 g* ]4 e
set trade-money-total 09 U, \, d/ X. G: b4 M" K, K% M
set customer nobody
/ h0 K2 ~$ o; _set credibility-all n-values people [creat-credibility]) D* ?1 f' r! h. h
set credibility n-values people [-1]
: D" Y! e* D! ?/ rget-color
0 `( I: e, d8 r. b
# ^$ g4 x2 }8 M
end
1 s. Z; i% l! i# I1 a
2 z8 B! C8 H1 a6 Yto-report creat-credibility
3 z+ q' Q/ e, ]7 P8 _" b8 C) Ureport n-values people [0.5]
; i7 Y  X  V$ B+ R1 V! {7 F' E4 t9 Rend
. s4 s( h, ?9 J
4 C5 N* b7 v2 N" @! pto setup-plots
- s0 Q: K* O8 t4 m! g( c$ h- c  b6 J* l6 O- }5 I& h
set xmax 30

7 m* S. d5 |: Y2 J9 }9 Y; X, r7 D, i$ [8 r: j
set ymax 1.0
' B: g# f- Y0 d8 }4 ^: J

1 M' i, o3 o# ~7 p* Xclear-all-plots
5 x2 J9 u7 v2 C5 s% l0 k: J

9 P  C  P& U: Osetup-plot1
3 j+ c* u( c9 S7 N8 ~. }
! h4 x4 K  f9 F4 t
setup-plot2

# a& I) Z; z. n# S+ x+ G. J/ k! e% |  [% m; I& J, x
setup-plot3
- _8 x3 p, n4 ]# {7 y8 P5 `
end
7 n! Z- H# v4 ?) s+ F" V+ q0 C1 c" ?' d- v/ o2 f8 _! y0 M
;;run time procedures4 V$ E1 ^" H; b* A3 X( ]* X
1 W/ N8 Z6 n/ ]  {
to go
: j$ \( z& f% P/ [* J
2 f6 ]; {& B1 Aask turtles [do-business]
! i5 u% w$ D) u: H/ W' L3 H! n
end6 Y& O& j: x( Q

4 x9 [1 O! |' j8 H0 n# J6 yto do-business
3 r. b9 s  o1 E8 q0 M

0 {+ P7 b% `  r1 }2 u3 n
# S! g. |# ~& O2 e: Z& Z; g0 Brt random 360

8 A9 s5 a5 B* Y5 Z4 ?, ]9 |9 B  h1 s  \) T/ g* @* _* C
fd 1

' t. k/ c+ @$ l! L2 L- @  q% A' I& D7 |- y' `
ifelse(other turtles-here != nobody)[

1 D! U: b& B# U7 V2 L" r' U, @! o6 Y) z4 k) b  Q) |
set customer one-of other turtles-here

: v  {( o+ E* N' K! C6 ^
' R/ c4 W' ^4 \7 `;; set [customer] of customer myself
' q1 x. H6 E) w7 E; O5 z$ Z
+ D( r6 R6 W* Y
set [trade-record-one] of self item (([who] of customer) - 1)
; u6 H2 e# b9 L/ V5 n2 m& l  x[trade-record-all]of self* P5 U1 J4 O% s
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( E8 F' U7 K' e# [* t" a( N. {$ |8 x+ ^2 I  `& Z& ]
set [trade-record-one] of customer item (([who] of self) - 1)0 O, L3 D7 F( W5 B
[trade-record-all]of customer
! l1 A7 W# Q: A; t4 h0 ?; H! U
6 G+ ?% M4 y# i+ a$ O9 D
set [trade-record-one-len] of self length [trade-record-one] of self

5 C0 b3 k7 E+ D5 O/ Z5 Z* p5 E- O) r- u" F0 d
set trade-record-current( list (timer) (random money-upper-limit))

8 K0 u6 ?# }8 N, \7 g0 n0 T3 C/ x$ C7 v) R
ask self [do-trust]
+ \8 _# I  ~% ^, g" b6 J: F;;
先求ij的信任度
3 x! P: h+ t/ i/ P4 k5 l, c- g: Y! K2 L0 v; }; i; @" }5 m  r
if ([trust-ok] of self)5 U/ R) H! N7 K" q) S& H( ^9 o
;;
根据ij的信任度来决定是否与j进行交易[
; y" u: X8 y7 F# |- r2 I% kask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 a+ V5 S. @; c: G! N

0 M3 p) V2 {5 ]' C& H[
; Y* e9 ]& U- x: W3 w
$ d( e2 ~  Y% K; I9 R6 v0 f
do-trade
' h1 }3 @! d7 V9 o" N! j1 E

9 ~4 s, R  Q1 ^, C% }8 {: |% jupdate-credibility-ijl
4 {; P3 {) U0 ~

8 _, m; [9 u7 ^  D, Wupdate-credibility-list
. N# ^5 \' P! y  ~8 H
0 E' p7 I+ h9 @# j, }( _9 n

1 C4 b2 T* ?  r# v7 t' d# r) e6 ^" Wupdate-global-reputation-list

: P/ j. L; h/ A& n+ ~) |1 {7 F1 g7 V& U8 X/ a7 c
poll-class

* \% [1 I/ g6 ^
! ]7 b& n( o1 }# l. K) H" [5 @get-color
# J; [9 D2 ?7 T& J7 a+ p; ~
. F  a; T6 h7 t3 }% W* g2 W/ J4 @
]]
; O* ^' T+ ]7 D+ a
6 M+ v/ I# `! u5 C9 w;;
如果所得的信任度满足条件,则进行交易& H/ w' {$ c9 S- M' d8 B
: E. v9 C2 _; T- \$ z1 o9 Z
[

% F6 a) `, J: X- p' b+ j1 a& B" V9 \' O4 \7 x
rt random 360
4 ?' W+ m# X  V0 R% H! Z0 Z
4 m4 c. p- R$ T% L' [
fd 1
" C1 [' r% U3 |# G: L3 C, X

) Q( _, ]! H) d; Y]
  m& H, q1 Q" K! g7 L3 {1 p" u$ j

9 m' y" P% N& Z. h* ~# u; _end

- e! ]6 l5 _1 J) Z4 y$ e. t. F7 V4 n; X$ E8 Z
to do-trust
2 [- H& H7 i! V* {8 V/ C6 `5 rset trust-ok False7 j$ q- Z& `6 C7 Y

0 q: `' F$ D7 `3 D0 }
$ s  v' n5 |! c1 f
let max-trade-times 06 c- j% _" N& h% ~- o
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, Y! f0 `' Q) V, z! m' C1 Ylet max-trade-money 0
! R$ A" \* r8 b7 V) a( sforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) Z, E% Q6 k; |* w$ d6 _5 t
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 w4 C3 C" A7 h- L7 C2 g7 H$ H
  `, S  C* x$ y5 }
- S! P# h8 N# \! _, T0 E0 [) Q
get-global-proportion" `0 S6 W6 ]5 d. E9 D; s2 g- X5 k
let trust-value
, J9 s  q2 d/ R. Y! d! Klocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

; d6 v4 n) n6 @! Sif(trust-value > trade-trust-value)% v, o/ z4 G$ O2 r, v1 Z
[set trust-ok true]
& M, z# P  k9 |& t4 @9 |- n: qend
# R, \! ?# g! x  T' |
. D' m/ f$ G7 U; w& U1 ~, Rto get-global-proportion
" }$ W: `2 P1 C1 V( d8 eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 j& \8 p2 r- r# o2 V
[set global-proportion 0]6 x' A) h7 L7 q1 c
[let i 0( _5 I  z$ b5 L2 F
let sum-money 0! U! R( U3 z2 l
while[ i < people]
! L9 c3 H3 p1 a0 g; h" k: n/ H( L[+ G6 P" p2 h& e! B) u
if( length (item i/ \7 ~' b+ L9 @
[trade-record-all] of customer) > 3 )
% [! R$ M7 N. x  S( T' j7 R
[
1 S. X: s% y4 N6 yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 y/ R! |$ J3 G, \3 O9 f0 P8 s: ~]9 O6 i  H' R% ^. }& `( F' L1 J% N' ~7 ]
]
( ?) B  h. ?0 K: @; Plet j 0
0 n7 |4 Y" s+ A3 t/ ~. tlet note 0
, f+ Z  J5 \8 z6 @: H( ywhile[ j < people]
8 e2 ?+ o0 X3 `% V7 G# S4 g[( o; s# b: I' P$ \* V# h
if( length (item i
, W+ C: Q; h; _. _: U[trade-record-all] of customer) > 3 )
4 ]8 z. u' m- u/ {8 Z/ {" B+ }; Y6 b
[
' U2 p  ]& j# }0 `) ^0 P& Pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" g! U( x- f/ e  u[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 B4 O- v. i, A& ^. `9 J2 R[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 K% H/ H: C' [% B
]
- v( d. D2 j; ~5 r]
1 c( j3 M) N; O* J+ E3 N5 [set global-proportion note% S3 ], X$ f6 X: z7 Y9 E
]
# B+ Z% S: V  A' ^- |7 mend, z. q. k0 B4 g7 a2 B8 H! u

) |3 u: b7 g6 I* Sto do-trade1 o# a. V' c% h5 a; L0 c
;;
这个过程实际上是给双方作出评价的过程
0 o; L8 j/ z  i% k. Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; g% J1 e9 v/ B/ a) R! }6 C7 tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, @; _+ U( ~- w' T# F
set trade-record-current lput(timer) trade-record-current  x4 w: ?5 [: s; r
;;
评价时间% ]; M" U$ _) W) I9 V3 R# @, {
ask myself [! y4 b5 `7 {! n/ M4 K* N
update-local-reputation# c- }- @. e2 H9 f% B
set trade-record-current lput([local-reputation] of myself) trade-record-current. U  O5 L$ {0 Q" s4 I
]$ j2 i3 ]! T1 R( o2 C. H3 U
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ n% A8 J5 q; P) |
;;
将此次交易的记录加入到trade-record-one; `9 ]$ |# ~# ?9 {0 M# \7 \9 `$ @! {
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 L9 b$ `/ e( ?let note (item 2 trade-record-current )
0 O3 Y$ }# m6 R: j8 l( tset trade-record-current
9 l4 u! G1 ]6 r# t: `( p& p7 p! B(replace-item 2 trade-record-current (item 3 trade-record-current))

- }+ i* ~9 H  v0 P! E" ?4 h: cset trade-record-current" y! L3 R$ S5 @9 n$ `9 @
(replace-item 3 trade-record-current note)
+ t& S* m/ k4 n1 D) p3 W  d: K" T" j$ f& R- G; j7 o$ M& [  [

% v8 M2 N% T  i, wask customer [' a6 J7 D# a0 e. ?4 L
update-local-reputation7 C9 ]5 c- E$ M
set trade-record-current
  s) Y2 Y4 K0 b4 W; Q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& p( i9 N% d9 c* q$ F; N]- {6 b* f' u! X, s

3 X7 b) W% t9 i

4 d" D3 _3 }6 R  b0 f: _% _; rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  J3 D9 l  q+ u

# `' v( u: H( `$ e8 Vset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 a3 p/ B! l" [% L7 k. F;;
将此次交易的记录加入到customertrade-record-all3 I# r  ^! N- X$ V( o
end1 `& |" ^- s6 {+ \* u
( y- L6 \. q* z+ S# u  m
to update-local-reputation: K, q, ?% z% B* h! \
set [trade-record-one-len] of myself length [trade-record-one] of myself- G1 [$ V( K% Q3 Y8 i2 G

% g" [! V6 i" k# N
  D, V/ ?" C6 i5 t0 s;;if [trade-record-one-len] of myself > 3

/ D8 j/ B7 i9 C$ u9 U/ fupdate-neighbor-total
: e6 n+ i% |% ^& o) P" k0 C;;
更新邻居节点的数目,在此进行
1 f8 D! O. X% [  _% X+ Y- [2 S% llet i 3
$ `. e% s* B3 Dlet sum-time 05 h, z  t. l2 ]( N% `
while[i < [trade-record-one-len] of myself]: v5 o4 S! Q; k4 ]! {1 S' S
[% y$ t7 _7 v# Z" I
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( l# l3 m& J! B3 {& b  `7 Aset i! @& e1 t2 B0 M6 G
( i + 1)

" y& @. ^) V" @: E]
; ?9 \' m# b7 N- Xlet j 3/ P& Q: R+ ^7 l1 z0 K( C
let sum-money 0, t' _8 f% N) }
while[j < [trade-record-one-len] of myself]4 a. p9 u6 [, \& u0 `/ {* d' ~8 Z
[) E! k" x3 I3 U5 V
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)) w' c& N1 w2 k) W2 A7 S8 A- ^
set j
! r& W; A; s, R4 O4 k  r( j + 1)
6 G! w; T& \, ?2 G2 J
]. v8 a+ g# [, r( S0 u: X; F+ m3 M
let k 3
5 ^2 [: U- q1 F' llet power 0
4 x  c+ a4 N3 glet local 0/ K& C4 K6 m- Y
while [k <[trade-record-one-len] of myself]
- \' }' m  \1 j0 a[. z  Z  ~+ V  l/ q
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)
5 S/ C! ^2 T9 r: K  d  `+ Yset k (k + 1)
* X* q3 B4 N/ _9 ^]7 W. |1 P7 ~; Y, N. ~5 p9 i
set [local-reputation] of myself (local)7 X, L  A; z  D- m) `* Y
end/ d4 J' |  q2 Y' a( [9 D$ H
& `; T' a  e3 T0 V6 ]. V$ X
to update-neighbor-total
+ \6 i6 l: W0 }! A( `; N  V0 I/ T/ `1 V) Q# w; E" L
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 S! S  D3 M. j$ |7 |0 s3 E* ]( Y! y
8 ^9 d5 |1 s4 r3 z
8 ]$ z( B0 n# S3 E0 b7 j  G) v# [
end
1 n5 R( |9 u: m6 x( E2 m' l: u5 d& w% j$ z/ b0 X1 h
to update-credibility-ijl
. r0 Z3 X/ M7 M& J; c5 t* z8 ^1 K6 o- J) o6 K4 x, `
;;
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 y) a" Y4 p5 x, P' y
let l 0
7 c9 m" ?  a0 x- P/ gwhile[ l < people ]
! u# E9 }& J) G4 R;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价$ e* I  W4 x% V0 {' W  ?1 |4 T
[: }) A4 I3 D2 P4 m4 E
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 ^1 u# k) v* w. l4 g5 qif (trade-record-one-j-l-len > 3)
+ q/ ^9 ^9 V' e! m8 h6 o" L0 ~[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
/ D+ I( H; l& G5 W5 O0 \- glet i 31 u9 O, ~7 [: R) }  {0 {+ F0 ~& l
let sum-time 02 |  f2 T1 i4 z
while[i < trade-record-one-len]
) k; e2 v% A. P7 z+ C+ U[
" Z1 I! T7 n) u: v: [set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ }; E* S8 c0 ~6 N) xset i
9 Y& X' s* z# }& S" s  Y( U5 g  Y8 ?( i + 1)

, \$ ?8 G) N. h" D# y  F]' E$ s3 C* R% c# Q
let credibility-i-j-l 0
. Y" D- l# q9 V' Y/ d;;i
评价(jjl的评价)& i* r. N3 C1 ?5 S) j
let j 3
0 _" _9 ^- \- k! p6 z* Z  D8 xlet k 4: l% _) X0 p4 `6 f" e9 l- l$ I
while[j < trade-record-one-len]
: W2 H9 q0 e( i) v# H[, d' b* r0 J6 o# W3 g0 V6 _
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
9 j; }/ ?" _( [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)$ j, a) i3 @* C: ]9 k
set j
7 r4 P8 I" c( g4 M! _! w( j + 1)

6 Y7 M/ w5 g' X]
' e" C( {/ B+ g, u& v1 Aset [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 ))
# I$ P/ {. U6 S; P+ p: G
/ U9 _7 g. L; `' ?+ s

" h8 f  a1 g7 b: J6 m2 m( ]let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- h; r# q) {6 {& X: X
;;
及时更新il的评价质量的评价5 C. ]8 Z: G7 g, k. [
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% t' V4 V2 \, ~2 qset l (l + 1)4 x" h7 o1 O2 D$ w2 G
]
0 }7 L6 I" _3 `  x1 F8 aend. X4 \' ~" p; _* P  {2 B

- t1 [/ P! r6 J2 E/ P' k; Uto update-credibility-list- u4 c4 `% t) X1 C: T5 g6 x, q' B; L' y
let i 09 ?) m3 x. `. f) @0 Q! n
while[i < people]
' b8 P3 K  G& ]/ P* I# H[2 V  L& v' @, _% g5 ~$ w7 e4 X
let j 0/ k6 l& D8 _  d3 W. q
let note 0
8 K2 ^) {- A" t9 xlet k 0
/ O7 N9 |4 R. T+ |8 s) b' T6 w- e;;
计作出过评价的邻居节点的数目/ I+ _# e, ?! n" b. O( i
while[j < people]
5 x# M8 D4 X5 G# l, n. W) x8 W2 _[) H4 C1 ^6 p1 I" {$ @+ D
if (item j( [credibility] of turtle (i + 1)) != -1)
1 O4 q( f" h( o6 t) e( @. o+ K;;
判断是否给本turtle的评价质量做出过评价的节点
, Z( t. k- A0 _! S3 m  U# y+ \/ N# o[set note (note + item j ([credibility]of turtle (i + 1))); A/ u1 s5 a  L  T: m1 ?
;;*(exp (-(people - 2)))/(people - 2))]
4 H: v5 O5 O" ^7 _2 m
set k (k + 1)) G3 i* V6 L8 _6 d* R
]' W+ f* h9 a# w6 y: y
set j (j + 1)( s: [1 r/ U6 T  w  P% C* K
]& g. Y7 A" B1 m2 q  S: _5 B: L
set note (note *(exp (- (1 / k)))/ k)
2 M9 W* x( [5 hset credibility-list (replace-item i credibility-list note)
' m! W1 q- H* V" |, |set i (i + 1)
* |6 t+ V* ^; \2 e1 e/ u]
0 T$ {5 J5 @6 I- @end
$ `, y( I; O( y( g. Z
1 X/ f; }% h# Z4 u: C2 S8 Dto update-global-reputation-list. K5 y' u8 s' j$ V( z3 u' `
let j 0
$ L7 h9 Y5 A% R& b' @* q9 Ywhile[j < people]
7 h7 |! F" A; @[3 G2 R! d0 Q/ W6 ~; `/ N
let new 0
( `9 |5 t' M4 i/ U;;
暂存新的一个全局声誉( r6 s  X$ G0 r9 d1 `
let i 0
' V# }) V4 V( Vlet sum-money 0
' S, u) S% e+ c" C# i) O$ j' `let credibility-money 0
3 V% ]) |8 q7 b+ O3 x$ {9 ywhile [i < people]
& A1 ]$ H) c7 x% @0 `[6 `, |5 \9 \5 I. v) W7 ]; m9 U  c, ]
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# |) _) Z7 ~+ \set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' w: e7 E1 y# S" Lset i (i + 1)
2 j1 ]% I0 `0 u  @7 V3 {]
. B. G5 l  `/ `/ f! f+ clet k 0) t% ]- ?: O3 y4 E2 z2 U
let new1 0) Q& }3 C) t0 w3 _
while [k < people]
7 R0 x; h+ A! O$ [1 n; u$ t* m[
7 V' X6 x5 s, k8 j0 C7 K7 nset 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)
9 Z6 ^7 B) U3 _0 e5 K" Gset k (k + 1)7 @- k7 A. x1 R7 V
]
$ t8 e  z7 j5 s' mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 j0 S+ d" W8 e" G4 l- Y9 Nset global-reputation-list (replace-item j global-reputation-list new)' o3 `- B, O1 |! |  N( _, [
set j (j + 1)2 z" x6 ^% C( m' W0 m
]: @; D. e0 Y3 C7 j
end
2 z: F: u. a3 L2 _2 F9 P$ X7 q4 p, m* S2 Z- v7 X
1 c0 {# |4 Z2 w0 m

- }3 {" X6 f2 Lto get-color$ Y, u/ w2 w0 C4 o7 I: `

. i, {9 M# d  S! z+ c6 A0 Gset color blue
1 j$ k7 J  h5 H5 m9 u
end: G) c$ L2 @' T7 t0 J. X! S

# H2 y0 M) q. a& eto poll-class
: G4 K) @, X% A" C2 P* n; v9 Tend' ^7 K3 W. P- J- X( I
: k# N/ v  h9 R( u1 x8 d" S
to setup-plot1
8 K% N' _# o) O( t
. _6 @# N6 k% v! Nset-current-plot "Trends-of-Local-reputation"

( s+ C0 L, h1 d% l' @! f% C$ o) T- x. i/ P
set-plot-x-range 0 xmax
) t0 k: H' i6 V
9 v8 x  ^$ }; W/ d/ Q6 A- e
set-plot-y-range 0.0 ymax
( i) X  u- V" n
end
  ]7 J& u, ~) f  S7 _6 P! F, M8 p6 B+ N# N  {, [
to setup-plot2
- }2 h' V. N3 d9 y6 T, c* a) B. _# a
set-current-plot "Trends-of-global-reputation"
$ Q' ?  N' ^( R! M* g$ i0 i  x, x7 ?

7 t5 A7 M8 ^6 Rset-plot-x-range 0 xmax
; g1 G' P2 ^% h

; u, K( d9 v9 t2 X* _5 V0 eset-plot-y-range 0.0 ymax

, \+ S9 L4 }  z2 o/ bend5 J1 Z; m0 F) v+ _6 s% K$ ~$ s

  t( H$ k: l% a- e/ \to setup-plot3
: y* {/ J6 ?' W( {; c  A2 r9 c& h' ]: n% R
set-current-plot "Trends-of-credibility"

/ K) [; B; }% l+ V8 i6 S( P/ |0 \8 v5 A; U0 I8 M) _: t
set-plot-x-range 0 xmax

' X1 K$ o4 c' n; q2 s; G- W; ^: S! T& ]8 T
set-plot-y-range 0.0 ymax
: R) J; B8 o7 V7 K- ]' y3 ~& u- a) \
end* F$ t$ q: n# w- P: S( c
; u  g4 t* {4 a4 ^$ s
to do-plots
8 A3 @- @. Q. G  f2 |set-current-plot "Trends-of-Local-reputation") }. g3 Q3 f: |# E: U
set-current-plot-pen "Honest service"
1 o$ {/ i) M3 `5 q; F* B5 cend
- u2 a7 H  y- |% W0 k" H; r. H
& k( ?5 d# Y1 s& u0 r# {# P[ 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.  ]; B( l  x3 Y9 }$ b7 a

9 J9 b4 C9 e1 k6 z% d1 ~# s. z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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