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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:; L; n% s; k2 f0 P8 [, e# }  X
to do-business
* b3 R- O7 S& Q rt random 360
: W9 e! b* j) H fd 1/ E' F" t6 R: I  v$ ]4 |
ifelse(other turtles-here != nobody)[
4 q0 e1 L- ?0 i+ q. ~   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
% J, l" t) h! o" F& a7 w+ m   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 P& G( ]; X$ g   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, @! ~1 d8 D6 G/ f- a   set [trade-record-one-len] of self length [trade-record-one] of self
8 k4 `4 S9 u) A$ n( e   set trade-record-current( list (timer) (random money-upper-limit))& E+ l/ ~; k0 v2 Q. i! D% t
( p% @) h, B9 t  f9 W
问题的提示如下:  U# `) h& d0 z
5 \  |0 u# j) D6 F
error while turtle 50 running OF in procedure DO-BUSINESS* x& m! S4 B, o7 h# y
  called by procedure GO
) {! e" L& [7 o; lOF expected input to be a turtle agentset or turtle but got NOBODY instead./ P2 Q& j9 V. y; {5 V6 `
(halted running of go)
1 J2 l$ C, T5 k
) q: @  U; i* V1 L" X! I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~~
+ E6 {* r) H/ C7 r$ ?5 U4 b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
  c" @- o" c, ~/ g" t4 t! \globals[
* k: U/ i; f! Y2 jxmax% x5 W& g0 D! h) C/ w* q- V
ymax/ {+ r7 x2 V! S
global-reputation-list
" [! H7 }$ `  i7 j& i* \8 O+ r
7 G& m  c$ ~" x( I;;
每一个turtle的全局声誉都存在此LIST+ L3 V! c, c& W( ~4 d- i
credibility-list4 l3 f3 S) `, }7 x6 @
;;
每一个turtle的评价可信度4 P  ^' ^  v. n/ D, A
honest-service$ \# P5 D+ m& n! d+ J7 E
unhonest-service& {, ?+ `* U7 ^/ N
oscillation
% R  b4 C8 q; V' B  w2 Frand-dynamic
9 R' |0 \9 t0 K' f  C]: W2 P+ R- ?/ V1 Z) D  r& D
2 C! z7 L" Z5 E; v7 D
turtles-own[
6 F) p$ @. @# s7 _2 ]3 Xtrade-record-all
5 ~0 u# l/ i* V% j/ Y* P;;a list of lists,
trade-record-one组成
; n- p2 @# K% p  ~trade-record-one
( `" ^, b8 n& C! C2 g) w/ U;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录7 ^9 a% m7 u/ Y* h6 Z: P- p  l
) R' j/ F) b+ H& E0 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]]! L3 o" f4 [7 a* z4 p! k9 z
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]" [4 N9 L5 G8 t7 s
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
1 }% [% u5 n8 U& g( x; X7 ?neighbor-total
: n% a% p2 v7 B+ j/ H3 y1 [;;
记录该turtle的邻居节点的数目
2 ?1 G% d0 O% b, @( Strade-time
4 h( X& \' S+ K, Z  ?* S$ h;;
当前发生交易的turtle的交易时间
' W+ g; m; I: Sappraise-give
2 U. l. M* B, ?2 n+ m;;
当前发生交易时给出的评价
$ _! I+ T* y! B2 Lappraise-receive0 }! A  [( t8 d9 U' p* H
;;
当前发生交易时收到的评价' r6 k* o$ I( ]! w9 A
appraise-time
) z8 U5 Z! S: @4 u; r5 l9 q4 Z+ Q;;
当前发生交易时的评价时间
, ?1 R( y" F5 `' c3 _* M% B9 M$ {) nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉6 v' U1 L0 `$ b/ t, u  L
trade-times-total" `  t0 q. }1 q% n
;;
与当前turtle的交易总次数: j  M! `; z& e7 C
trade-money-total" ^) c+ e. H6 L- q; h
;;
与当前turtle的交易总金额9 x. ]7 m7 Z' O6 o- |  _- ?5 l- \
local-reputation
0 L# m( i# c2 K$ k* bglobal-reputation
( m3 Z- Y; l4 R1 T( ~credibility
/ ]5 j; d% r1 N. V9 v1 q) `" \;;
评价可信度,每次交易后都需要更新
* s, D8 ^! N' h0 ~credibility-all7 C% B  f/ a. F7 C
;;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; v) R2 y& u1 F' m3 D5 N& D
, b1 C1 |1 V' V
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
  j2 K  {" h: q' j* Y' o3 m2 _# mcredibility-one
/ J9 w6 e) M7 v. v+ ]0 B! U;;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
! ^# n, N* v* x6 Pglobal-proportion
$ J1 U9 L* l; N2 dcustomer' v7 z( }7 Y( W
customer-no: S" Q" ~) v4 H% A/ h, c: L% q
trust-ok7 `2 {- l) i  H- y$ S2 G
trade-record-one-len;;trade-record-one的长度9 Y3 A" e) d! X$ P4 _; k
]" q+ Y/ ^& Q; d( x6 F; x

+ h5 U5 e) q  F6 j;;setup procedure
; q/ x( V3 O, t) U# T, D
; Y* P5 x/ \! _6 ^: ?to setup
+ D: `0 w5 \4 t6 r- L! Y  [
/ W' ?  R2 s! y" B$ N4 n8 aca

* D+ i. j3 \6 U" N5 `# L; v) A1 u  `
, g5 }6 O/ \% }8 U5 ]9 Kinitialize-settings

) Z" j8 X0 g' H! O4 G' C# n1 o. v9 t! ?1 g
crt people [setup-turtles]

, Y* D( T8 U5 \6 o3 L5 q  S, b8 F4 L% J; s' _9 y; B8 {  p
reset-timer

' F/ p" v1 H- _
; s+ D5 G' L* [- p4 y7 X; Dpoll-class
1 ]- B& V6 A* \- r1 e6 o* b# ^3 ?
/ d1 r6 K  E" W+ G$ Z
setup-plots

% m. P* J( ]/ b6 u4 e0 H
7 ~  n3 X4 r0 e$ @1 H. N9 o- fdo-plots

% ^. M6 a$ ~. K, R4 P  D$ s7 R; `  bend. d5 I9 u5 |& X  ~5 G2 S' g& n
. [4 g, E) T7 P# ?! D/ I
to initialize-settings
0 d  I9 R- u: Y- R+ x* A! @
! i+ ^3 \1 [, a9 k! _set global-reputation-list []
% h1 P" I8 O2 R& T
3 m1 q  S3 ^8 u) }9 v
set credibility-list n-values people [0.5]
' Y" @9 f  g, ^  l5 t; i
  f' q+ e4 ~: j% e
set honest-service 0

& ~# E, t' `* G" R2 \) G
* Q3 v0 m/ U0 Y, X+ t. l. |! C' bset unhonest-service 0
& |7 p' V) N  d. b  Q" {' T2 R; j3 f) i0 Y

9 h; w4 P/ O/ z5 J: w( n4 vset oscillation 0
7 G  d3 v) `* w, m' J  ?

5 {% {/ C9 S" ~3 G5 fset rand-dynamic 0
3 b" W" s& u3 s% Q7 l4 J
end
; ^7 x) E3 H. S( Z- ~8 E1 [6 q
, y8 c$ T3 M# P2 A$ a+ `' @to setup-turtles   n1 C2 q# l- L9 U
set shape "person"
( g" |7 Y" e- A! _  A0 E( V0 qsetxy random-xcor random-ycor. l, H+ T& b* p/ z- }4 T/ d
set trade-record-one []* i5 z; t! j' z$ B$ z0 W! t
$ I; q7 u- M- W; M- j. [& M* b
set trade-record-all n-values people [(list (? + 1) 0 0)] - \$ `& {; g/ m0 q9 O3 z
: T7 U- [( x1 }* t. }, z2 T* u
set trade-record-current []3 `' I6 N. u* ]  X% W+ R
set credibility-receive [], p  W" L) x3 m$ y
set local-reputation 0.55 c& s. t* y( |0 |
set neighbor-total 0
) J3 t. |# c1 p3 p6 `6 E) [5 l3 J. Mset trade-times-total 0
  F8 }4 ~: f' U5 g7 uset trade-money-total 0
1 x+ I: s( ?3 Z; A1 o2 e3 T# Tset customer nobody
9 x  A: F* m2 T) b) J& pset credibility-all n-values people [creat-credibility]' _( h$ P' t% S; `, J- W
set credibility n-values people [-1]
2 }( c/ U2 b. eget-color
  S* H) }8 X$ G, V2 m8 t9 x. I

) [2 F9 p+ D- D1 o  h# [end6 }5 r1 h4 @9 h

. {' l) Y: G& }6 _7 t9 P/ ^8 qto-report creat-credibility# I0 {3 t1 C, r( [2 G/ I0 p
report n-values people [0.5]
. I0 Z6 |- y8 p& pend0 }: W( S* ]0 e: T( x$ d
6 y. \7 n6 y! ]0 W
to setup-plots
; O2 _' G0 c/ f# d
3 S: J3 ^  m9 C( e" D2 U- t3 Lset xmax 30

+ y  v# ]9 G2 C( [; i. I9 y
; ^) |2 v/ `  b! ~( X2 ~. Z/ Sset ymax 1.0

% N; M4 P, s2 }& ]" U7 [
8 {8 ]3 s( Z) W9 Jclear-all-plots

+ r$ }' O2 J& a8 ?4 L. |- A6 R) l% I6 O, [( B( o3 K; s8 f
setup-plot1
3 s) |4 c+ S* J2 q% |
; o) [, p! q  T' t; s0 d
setup-plot2

* p# m0 [- b; f; k# p5 f! O3 Z
2 N" I' l8 t6 c2 v9 r- Rsetup-plot3

8 [* W# ^+ l' l! F2 i# Y7 M" ?# aend
- c/ |+ f1 R# l; c3 u- u8 g& C
" s7 N+ x7 g$ g  ^3 e3 T0 `;;run time procedures0 O# i7 V0 ~* o  g; z

" ^+ |! j! |* W% Dto go  K4 X( \! g2 r) G, |/ d9 n

) v+ N2 m( r) G& v# y) P/ M; Pask turtles [do-business]

* H- S8 G  v8 Y4 tend7 u0 N6 Z( L' L7 N: ?! m
- [3 y8 V* {" L$ a+ m
to do-business - B6 p) U! G1 Z- d3 F
& ?% s1 {3 \8 i

' d7 G$ V7 V; `5 s9 {+ ?rt random 360
' ^) ], ^7 e" g& E1 W& l1 f

5 j, k- f1 a- Efd 1

, l$ P8 r5 \5 K$ e
& V: s  s. ]! b2 t4 K; ^; Uifelse(other turtles-here != nobody)[
: D" \' Z- G& s! F/ U& ?

* r' ^- L. U5 c4 A. c6 G: S- _$ |set customer one-of other turtles-here
1 C9 X( F/ u; M' v% T8 Z( a. U

8 S  v7 ]0 ]! W8 z1 l5 e. B7 Z;; set [customer] of customer myself
5 k7 ~# m; q! o6 l' c1 j# D

2 y4 r, e6 G6 L# n  C6 G! N7 n: ~set [trade-record-one] of self item (([who] of customer) - 1)
3 o' E, b. E. T[trade-record-all]of self, Z" V; ^# J; b: [
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 [0 s+ f) V4 Z3 c0 D+ {. ?- ~
set [trade-record-one] of customer item (([who] of self) - 1)
4 c  Q7 r. y& p2 `# |$ }! e* y7 W! ^[trade-record-all]of customer
9 D  x* |) H* L# x; ^! q  d
  ]8 C' w" s3 k$ D) ~& F
set [trade-record-one-len] of self length [trade-record-one] of self
% @- q3 A- Q' q  g6 Q. r1 ?

8 Q% f5 B- Q3 v* A+ H- zset trade-record-current( list (timer) (random money-upper-limit))
7 }7 R* d- `1 s; t
. r0 y! h# A- d" z* J& U. @
ask self [do-trust]
- U/ ~  K( J# _/ J;;
先求ij的信任度+ D7 O. S2 G) I5 E, U7 `- N
& `8 g5 O9 H8 r( a5 A+ y: C5 Q
if ([trust-ok] of self)$ y/ e3 s2 l, v( e+ S
;;
根据ij的信任度来决定是否与j进行交易[
  f: h% w; c4 L, c6 E+ Oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 n) h2 s, k5 T7 L

- J. ]2 c2 D  n' q0 L% V* k. i[

' W- W# s- r6 R1 W9 F2 k/ Z. z2 z( C" J7 ^  T
do-trade
$ \+ e! U' h1 U4 k- d
; B  o: M$ F2 F& {' ]
update-credibility-ijl
5 S2 R% I( }. Q9 K' {2 K, h$ Z/ J
. P9 t% d2 }3 i) y2 {8 j' x3 R
update-credibility-list
+ F1 U* z* {/ _
, m% T- Q1 U3 U
6 V% p9 d* ?- v# ^  n) \3 x5 l0 a/ e
update-global-reputation-list
6 U' l. o$ |0 m* W3 S
6 I( h, `$ R, ~! f. @5 j
poll-class

- x6 w0 I) C, N7 d. Y1 U
" p0 u) k* N0 T/ Iget-color
6 v3 C" ]+ B1 z( l: K
7 L# g( O5 F- v9 e1 F3 G. k% A
]]$ `) K) y. [  K" l5 Q5 M

  [3 q- O( s9 T: A;;
如果所得的信任度满足条件,则进行交易4 A9 i. }9 v8 c6 J
3 A; f# F) I" |, R% {1 I/ {
[

  F! ]* @; |! b& I9 {: w  U" J" s5 p* p! l; f5 q1 m, {
rt random 360
. |  A. U$ Q; `" a% O; ]5 `  ]) u

+ ^8 l3 A3 e6 F: y) dfd 1

/ E. j+ n' l+ s( }# H" s! p
- E. O( `/ ~, ^  D]
" N9 [) |8 L- ?; o9 f$ O: a* d2 K
" H3 ~8 A4 l+ B$ |% [
end

2 k$ K1 E) J* ~9 U, G+ l+ C
- T9 I- ~  Z" p4 z# Mto do-trust
  {1 U+ {% |# ?) {set trust-ok False
. y8 N, g4 I2 N! Y9 i  I! w- G% [1 i

- F# w$ X$ H+ K; q+ |$ Flet max-trade-times 0! d2 ~- l4 r4 c0 G, f; N
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 h, J  i. l  B; j4 g( h# T! elet max-trade-money 0
& Y2 C* y' \. [; A% Wforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( B% L) M# g5 ~let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
; D& \0 Q* t* N/ U7 W, d. I- l8 f; s) n

9 ]1 P+ c' m& d6 e3 B, ^get-global-proportion
) N  A8 ^! H: [' l8 Y1 N' x" ]( q: Jlet trust-value: G8 }8 J* x% G3 u6 y
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)
) ~2 |3 Y3 N" @5 U/ G" p
if(trust-value > trade-trust-value)  O$ \2 `3 l) j  ~
[set trust-ok true]
) V$ V/ a# E$ `- ^end1 j5 v9 L8 ]& t, d  W% Q+ g9 u' e

( c4 f# ^. I; z' ~2 sto get-global-proportion
" V# d0 U9 _! A; L' A! [ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" ^4 ]" T$ g  R, X  t1 ?/ T
[set global-proportion 0]
( N* e% L! F% M( m  I: J[let i 00 }* S" i5 j" W: x4 o# U
let sum-money 00 J+ h- H1 e& L" `+ N# P# m  e+ z
while[ i < people]
8 G+ ?/ L  ~% P% d0 M1 T[' T  F/ i3 v4 M# @' }
if( length (item i
  f- Y3 [6 R$ o+ q2 n( K4 F[trade-record-all] of customer) > 3 )

$ H: n- b# G5 v% u- |[
: j5 {3 W( J+ s! Iset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& ]9 d7 }* P9 _6 w" F1 c3 q]
/ E, J( t  o& S) ]$ l]
# Q, q1 F6 A! `  M* A( h  r8 V" ulet j 0
$ X4 h6 q% y0 O( V4 o, h( k1 clet note 06 Y- F. ^8 E* I2 i2 P" ]& c; z3 C4 P9 y
while[ j < people]
/ y8 e; ?9 `& J" M* ^8 o! A3 ]( v3 B[
) y7 N. Y& O& L9 X! m& @2 Tif( length (item i
2 a0 G* N  e& y% x' z9 q# I* S[trade-record-all] of customer) > 3 )

3 E2 i. C) t6 t2 k5 S[
- X0 e: H  C, Oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), Z* c, `- a! p
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
9 h2 Q! f0 A# m  _/ `7 I[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ h* Z* I) R$ p* }: e* z]8 n+ J' w1 @7 O
]% A$ h6 k, X0 F7 ]
set global-proportion note
1 T2 [' r0 F: Q% W- X]
' B* ]! Z2 D- v8 i9 [- ^end
3 v9 |: b/ o; _
) K8 V/ Y3 o: o/ K0 X) w3 cto do-trade
5 D8 L; ~& k; T( K4 I/ s;;
这个过程实际上是给双方作出评价的过程) W" `( B4 R1 i! J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* W0 |3 I1 h3 Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: R! D8 v) G- q, @set trade-record-current lput(timer) trade-record-current& c- P7 T7 H) Q, ], ?7 Z6 i
;;
评价时间
8 k, a. `) D+ t$ ^! \( @ask myself [2 b+ b  ^4 ~* O
update-local-reputation7 c0 m! x& @) S; O+ C9 {
set trade-record-current lput([local-reputation] of myself) trade-record-current
- X" I3 z& O$ Z2 ?  [- M6 W]
3 i' \) z4 v  X5 b4 i3 sset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* \# h4 o. z( v8 q$ \& h;;
将此次交易的记录加入到trade-record-one7 _* U' l( Z2 [+ s; H; g% S6 ~
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( l4 @/ A& ^0 Q2 ^
let note (item 2 trade-record-current )
2 }+ R: k: |% z) F- {; U. w; Eset trade-record-current
" i1 {. ?8 p9 @(replace-item 2 trade-record-current (item 3 trade-record-current))
- {" O* X- V; G, z
set trade-record-current% E6 x: t& p7 |1 }
(replace-item 3 trade-record-current note)$ d3 k; `+ U$ J. D

5 B5 H# h5 X3 p* t

6 N( M; n( @6 L- S& `# b9 ^ask customer [
' a5 d9 ^9 h6 X8 c) {2 Wupdate-local-reputation7 a+ l* ?4 r4 ~2 H" M9 s
set trade-record-current" D; B, ^# q) h
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 @. p& s" r5 ]
]
" g" ~, `& d% b; N1 d* N
% V( g& A6 k/ f0 C  y- L" E1 U

5 l) h7 z: H% O* o+ q8 wset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 m3 o1 ~0 i3 j. q" S0 d

  ^$ I% T7 k% b7 B$ c# j4 `set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 U* d( y, W0 @& `
;;
将此次交易的记录加入到customertrade-record-all6 S3 G, l" b* w$ C; W3 m% M
end
; O% R" ~  p& ?; k$ O& m- [
( K4 `, h, q4 h( jto update-local-reputation
) k1 j/ p* J' g; ~+ V% Nset [trade-record-one-len] of myself length [trade-record-one] of myself/ ^! @& U$ J& Z0 i

9 U8 L; ]9 e+ B( s) g
( j7 x' {5 H7 r( B7 @;;if [trade-record-one-len] of myself > 3

1 H& r, Q2 c, l2 Eupdate-neighbor-total
  e# y) ]+ Q4 a' t/ w;;
更新邻居节点的数目,在此进行
- c! R3 f, Z' f1 [& tlet i 3
- w. Y* I& N' N+ E# _let sum-time 0
  F; \/ W* j* m- C/ h7 x/ pwhile[i < [trade-record-one-len] of myself]
2 C, v1 K* I- e7 {4 c& ^- J8 q[
1 [. E* Y. r/ D. Bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* s0 Z$ C8 h6 L4 U, g: ^& w1 Z8 k' sset i% n$ Z, u$ {: @- c+ }& K
( i + 1)

# C- B& S# z+ t# F8 w7 \1 i]
5 V% g) |* g$ j4 m, o2 ylet j 3( _* W6 j0 T6 j
let sum-money 0
$ R0 ^8 E. u: ~6 d' J$ x! E7 Xwhile[j < [trade-record-one-len] of myself]
  e% ]- h( j1 x' ]! U4 e3 D. s% s  F- U[+ E% |$ M& q3 }
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( C$ q- i% {set j
$ F! n% {6 C/ a. o& ?! x5 ?& U( j + 1)
) V1 p" J& |- \$ G( C* n0 u
]6 O- I. N" `8 l1 R) O2 k! H
let k 3* a5 X) r0 @' Y7 F& }, T' l
let power 0. m% Y" f9 ^( I, Q
let local 09 ?% d+ P: x2 c" W  U2 d
while [k <[trade-record-one-len] of myself]1 @3 I9 r9 i) ^9 _1 L' p' V
[, p0 {" X4 U1 p
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)
# X( y; d% W& q3 B& S5 N0 iset k (k + 1)
3 c  E6 G% _/ j# L. u9 R% Z) F4 D7 y]0 T" ^" F' G' b" e1 o
set [local-reputation] of myself (local)* O: x8 s, j$ D5 T! C5 P! v/ l" Y, D
end
" D* |9 b" w9 e" a. F. s4 b( y0 k( I9 X. E* o
to update-neighbor-total9 \7 Y3 l4 F. v+ \7 H

/ L' ]* R& y! o* ~4 a, Pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ g, @9 b$ O' }. P

/ ]/ C! k& f6 }
* g& K. w9 i% {' s% {# W% k9 W
end, q1 L; g( Q+ e) R; A( [4 o7 A* `, ~

) f6 O$ t% t  o$ h7 fto update-credibility-ijl " [9 d! D" h2 I8 r- {6 i

8 R: s. ^- S. I+ y5 X5 F;;
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 `2 @. P7 B+ S3 }. o" A* @
let l 0
8 u/ F9 n8 l  n. j& e' c) P- `while[ l < people ]; S+ `% H# y0 N1 V
;;
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$ ?/ B* e$ o& w# n) d5 p% l
[- g( Y8 [1 E% A7 k
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
- [  d0 p# d; S6 c6 m  Pif (trade-record-one-j-l-len > 3)6 T) ~% v4 ^  M
[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, p7 f4 q% Y& j( Q0 C
let i 3; P2 k2 y4 J$ H  D# A
let sum-time 0
- b6 A- d  \1 w7 d4 X: V" @while[i < trade-record-one-len]
+ n; X1 K# Y4 f9 t* }* J) W8 d[
; L' Z+ ~, Y+ R0 H# O  V; f$ h5 I6 C2 Kset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )7 U9 `1 B+ E6 y# k$ Z
set i5 D% n0 ^2 |+ e/ X0 e7 m+ [
( i + 1)
: p' k5 z0 w/ t5 K9 K
]# `2 N, T8 x5 \/ y/ L3 D+ |1 t
let credibility-i-j-l 0$ j8 f: t# J' _* a( X
;;i
评价(jjl的评价)4 H$ S0 K1 i4 G; M" Z( \
let j 3' x& @5 T" f* Q8 a
let k 4
3 [/ n( k0 o' U9 K5 twhile[j < trade-record-one-len]
0 X6 E  L  X9 M8 k  h[8 S. w$ A: P# j+ _5 w/ Y8 v
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& F$ x* v; l$ X% |8 c* w1 p/ Z$ P
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)5 k3 f9 L5 O& j3 l3 ?$ ]
set j
1 V* H+ b! a0 s" l4 `( j + 1)

$ ^, N- A5 F3 F" Y]
' @( T: J, F; [. Z2 M4 Oset [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 ))
' ?+ K( P  X) z# j
1 Z) }: i- @$ O0 X4 K
5 j3 ?! G0 c2 d& y$ p8 w# K
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))% o: ^! Y4 F: ]8 ~/ u
;;
及时更新il的评价质量的评价9 w/ h1 q1 f! l$ u$ e0 m
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( {" P" _4 p8 g4 r8 \. ~
set l (l + 1)
7 g) q' b1 `- l; T3 O  |7 U]
8 J  W. j4 I* v. ^- Mend2 s. X# D$ Y8 X4 F6 {0 e; q; M$ ]

& j% ~) N( y* H- B+ b. G# lto update-credibility-list
# h  E' U+ j; {  s9 o  I2 Mlet i 04 i; d4 E$ Y5 ~3 s5 ?
while[i < people]
& ^5 E1 `7 }1 V5 I! F0 X[
+ @. M8 q# g0 L/ q" ?, C8 `let j 0
0 Y2 O. h4 p  d1 t; x7 F0 R* vlet note 0
9 T5 l8 D* f( A. Xlet k 0) c6 i* ]! F# j! h
;;
计作出过评价的邻居节点的数目8 n% `2 v% n: u' f, r' J$ G: ~1 U" I  E
while[j < people]! ^" w/ y9 F# F+ u! j
[
$ m/ U3 ^8 B2 G! Q2 L: h- aif (item j( [credibility] of turtle (i + 1)) != -1)% N  r# ?# q! e$ h
;;
判断是否给本turtle的评价质量做出过评价的节点
* K. D2 y) w2 V9 `$ H6 D[set note (note + item j ([credibility]of turtle (i + 1))): ~8 L. x  @4 L: A* D' T
;;*(exp (-(people - 2)))/(people - 2))]
0 r( p( |4 h: L9 Y; S/ l2 U8 n/ a
set k (k + 1)
; w- `2 `# i: n9 e! R# U]3 |# Q/ Y; G( S7 s* E7 n
set j (j + 1)0 M" d! \5 K8 D6 d3 P5 f+ v* |2 u
]
* q4 y. _' k, f1 }& H; |7 |( \) z. B& aset note (note *(exp (- (1 / k)))/ k)  ]2 t% \0 @! Y8 M( L
set credibility-list (replace-item i credibility-list note)
& f, J( K: l7 F3 n( T2 Pset i (i + 1)" y0 n$ k, T! i) s8 B
]4 D' e1 }8 T3 P% [; A
end
( E/ q5 D6 _) y5 o4 ?7 i, s8 l& ^8 {6 j
to update-global-reputation-list
' T- K% }1 ]# w7 c4 {% f9 o; Ylet j 0
9 p# F/ V8 J' B) l+ m7 H9 ]while[j < people]4 }  G) D+ N2 f* u  [7 Q4 x7 S1 |
[" T+ F  F6 I1 j5 w7 t2 y
let new 09 D3 s: }4 L6 |# U
;;
暂存新的一个全局声誉3 U- L  [  j" G7 I5 t6 D* L
let i 0- S4 q5 [2 [/ `7 {7 h
let sum-money 0) p- ]9 r5 A' ^* k3 y% M# _$ B
let credibility-money 0
5 \+ l/ m# q, Gwhile [i < people]) z9 R7 D' ~2 r$ F% V( H9 |
[# T0 [" |! y4 t1 B, J0 ?
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
. b7 ]1 G) z7 G: E) Q6 `set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ @0 q7 o9 c0 y- b5 I
set i (i + 1), M. g& T' |. p+ ?. O4 X
]/ I, f4 J2 J& A3 E1 j
let k 0
" M1 T2 u0 z0 q. Q( [7 R% w( M% clet new1 0
& N  i5 {# Q+ w4 w% ?1 Z; Qwhile [k < people]9 n7 E( O( L% d
[1 p3 A$ e( z+ k3 A# T1 Y- F$ m% ^
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)6 a2 G- o! A3 L5 i: a( {
set k (k + 1)/ i0 L! l" e- i6 O7 t) \2 i/ Y
]
  _, p0 f) C# H  B# Sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 d' q( W% P' _/ M! W( I
set global-reputation-list (replace-item j global-reputation-list new)# f) y* F7 _5 [+ G- y
set j (j + 1)
- J$ F' P1 z0 o7 H, V]8 b+ u$ k) f2 J7 a" d- L
end4 [% ]+ L) T" q9 ]7 W* M

: `% v$ U8 \( |( m0 d
: ]3 d% w& {& ~5 m& ?
/ t. y+ o+ x" f* [to get-color
+ N& i7 ]0 I6 h# Z. V  d2 F6 ]; |) k; i3 u2 J
set color blue

  q- x3 \- U! Y4 c. e& _, send
# p# l" g; e' f0 F0 N, o. H% Y% }! L2 Z: _' Q6 J
to poll-class) D' F& z  o  ~, }$ m6 S2 d" k4 S
end' O# r  {  Y$ F$ k4 b% _9 ]
0 ~$ w3 N/ B' m6 L/ M
to setup-plot1
: u6 \4 t8 C% k% l% U$ A- p
; ]4 T4 E, j7 n! ]7 n$ Z4 }set-current-plot "Trends-of-Local-reputation"

, k5 u2 k* H& i
# O" ~, h( R% ]7 r5 Vset-plot-x-range 0 xmax
6 v8 q  q5 |4 f1 m5 O

$ S9 _" i' i+ K9 D2 v1 U6 ^; Vset-plot-y-range 0.0 ymax

1 i4 t$ M' k% S1 g: L' iend9 S7 i, W# b# k1 }3 N  V' a$ b

! g+ j  [- g' b! a# w( ?6 Ato setup-plot27 N" \" Y! M$ z3 a8 s# r
; j5 o" _, j& p' ?
set-current-plot "Trends-of-global-reputation"

6 w' M" @* n% I, V
; e$ h5 z1 R- s' Z) _set-plot-x-range 0 xmax
# n8 P) @4 u! l* J( x3 L# F$ q# X% u

* O" v) o$ e9 _6 g5 b2 {set-plot-y-range 0.0 ymax

3 o$ x& G* S. Pend2 ?8 n; D9 m4 F) H( q2 U5 H
9 l, w+ V- g! u
to setup-plot3
& B% H+ ^* A4 ^& I) }3 y
: X, S& s8 Z: tset-current-plot "Trends-of-credibility"

# U9 R* j; h/ b+ r
) C3 f( |$ {  \set-plot-x-range 0 xmax

3 U* S, `7 o& a" N: n" u
! U6 d; v# [8 L! y5 W7 a8 aset-plot-y-range 0.0 ymax
5 L8 O  @6 \! B
end
, v! F1 ?" f; v7 q' O& R) _2 L7 j
- H2 y/ u, n2 k) u! b5 \+ H& p$ @to do-plots. B5 S3 [9 s! p$ ?3 `
set-current-plot "Trends-of-Local-reputation"
3 R! r  X. E  U3 e; w4 f! g% Wset-current-plot-pen "Honest service"
' y  r- o  s, U$ {, Mend
) p) L: }6 C" A- F( s7 U4 y, C9 k( O8 M: m
[ 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.
( f6 A# y- ?9 F9 U" Z! X" [) H0 }# f7 F# ?
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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