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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 O- }9 f$ s) a6 ~
to do-business
* t+ k: c' K2 p3 q7 b4 S# i  j rt random 360
% g+ R3 j% {6 D- Q; H. J1 ? fd 1! V5 j, l# i2 E
ifelse(other turtles-here != nobody)[
7 V9 m; E8 z' e# `* m7 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.- D9 M* s) T7 j" J: N
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' _# g- S  q0 A( v4 s, A. u3 v, W   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
' a4 h- k% s) K% F6 K3 Y; h   set [trade-record-one-len] of self length [trade-record-one] of self: f1 p1 r$ \; p6 g* K
   set trade-record-current( list (timer) (random money-upper-limit))% j" p4 J: g2 t2 N- t$ k: H
9 O3 k" Y. ]4 P( X6 C$ ^
问题的提示如下:# ]1 m( d# f5 s; m

: M9 f, L$ ^' F! `& n& jerror while turtle 50 running OF in procedure DO-BUSINESS6 M2 ^" ^$ r6 q
  called by procedure GO
+ I, i* W1 W# ^8 lOF expected input to be a turtle agentset or turtle but got NOBODY instead.# ^( Y3 t6 R# B+ c  E; ^
(halted running of go)
9 ~7 \3 x5 q* F+ a2 Z3 M
7 k' I$ |" ]% I/ v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~~* t3 i2 V1 }* T# E' q
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
9 v6 o) C& @/ x. E% x# hglobals[/ k' k# M: y4 |! |2 \
xmax
8 V, E) k: A4 V0 J* }ymax+ Q. M7 |: g- ~& P
global-reputation-list
. d7 F& M, Y9 u# O( N. C4 ]+ L, x: t! X& L
;;
每一个turtle的全局声誉都存在此LIST
6 _- n) {: s' C  [9 L8 Zcredibility-list2 o8 d, q, R" O, L! Z2 t/ {
;;
每一个turtle的评价可信度
; Z0 O7 x  ]! q8 J0 Khonest-service8 j. N* V2 U- |
unhonest-service1 m( B% `0 z2 S! m8 {
oscillation
& K+ ~+ K- }, w3 [% E" ]rand-dynamic5 Y! K8 W! X- K9 p- B8 C3 X8 b
]
. q# J1 ^2 I( M. ~" W* b* w3 h
. y' E, ~' s1 |0 q* \turtles-own[
5 A: O1 f0 c. C8 A8 e: |6 ^trade-record-all+ ~4 B1 c( L6 W/ y& i& p: z
;;a list of lists,
trade-record-one组成7 V0 N$ Y" w" x+ F
trade-record-one" c/ a& @$ d( V
;;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 P- k; A3 I5 A" X2 J

1 J$ Q: n# |+ K; \$ A;;[
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]]
; @" b; ]1 ^) W# btrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
; b, d# b* M9 p( ^1 F" y7 J' f# P3 k! Q" `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list1 W* f( [  x5 P" C7 J! f
neighbor-total3 k6 X4 i- f0 H  p
;;
记录该turtle的邻居节点的数目. J! m8 z; D$ q% O( z5 W
trade-time2 P$ [/ E  L: H4 \1 Q
;;
当前发生交易的turtle的交易时间
& k* o; U& C1 Gappraise-give- ^& n2 ]6 e% l5 J
;;
当前发生交易时给出的评价' s! e& L1 Z! f' O
appraise-receive- M& w' p4 D1 v8 I" c7 x  O
;;
当前发生交易时收到的评价
9 c0 v% Y- P, E7 M1 |3 F9 Xappraise-time7 f1 _2 p' T( L& _& o" I: K
;;
当前发生交易时的评价时间+ i! I; k1 L3 E8 B4 g
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
% u/ ]$ f) u& P4 s* R& otrade-times-total
0 M$ ?2 \: r8 ];;
与当前turtle的交易总次数$ q' Z4 X7 X; F- w% i& D  g
trade-money-total
8 B5 |: b  w: L, |/ t- {0 h9 |;;
与当前turtle的交易总金额6 y4 W8 E5 W0 e: x3 t
local-reputation
2 n" p! J1 M& d" z9 |global-reputation) s' P$ v9 g, j- h4 `" ]' Y4 Q( p
credibility
5 o& x0 {6 v: w# M8 z;;
评价可信度,每次交易后都需要更新7 ?9 X+ n) c0 h- o2 ?" z0 A
credibility-all; R+ e- }5 F2 j4 ?, d& D
;;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! v5 X3 U7 ~% k* d' {3 N+ }0 s  Q

0 C# _* g+ I% r; U) q;;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; U" q+ T8 w( |/ T, U/ u
credibility-one( X- `7 i7 m7 Q# r
;;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
4 E, s7 d6 g1 s; zglobal-proportion
; @/ n# c! ~6 S9 ^4 ^6 Hcustomer, K. F1 W' f+ j: i/ k
customer-no- N8 I8 G' `' i- Y% w, G1 J
trust-ok
. o9 u8 F! X( y& Wtrade-record-one-len;;trade-record-one的长度
& f! X" r: t. g! c]
; `1 p! N2 O2 D1 j
* c' n( Z4 j% ^" S  b: Z;;setup procedure
% G) j- w8 Z) x) O% Z2 E  ~1 @( o/ M% Q0 ?* |) c2 n1 U+ r
to setup* s- z  i8 o6 T6 N
, H9 v8 k8 L" p  L/ k
ca
+ m# Q7 ?( d$ z2 b( T

* I2 f, p' d2 {, Z  u% xinitialize-settings

) n" M4 Q5 k' A, b5 g; z3 s  ^, X7 {% w+ ]2 z
crt people [setup-turtles]

" q. x' ~/ q; z- ~) G& ?9 Q1 m+ z" G$ p  B1 l$ M
reset-timer
. J/ ^  {$ F7 z% P9 N$ `* z

6 R+ i( ]2 g* n/ upoll-class
# X2 R1 B2 o- c! s9 v; K  x
1 h2 V/ m* @; m! g0 M* O1 `
setup-plots

4 C& @6 e# y/ y' ?  O% h7 [9 a! I5 e  F$ V
do-plots
7 [5 c4 X- R8 k9 a1 K# i" o* e
end, n- x$ m# K# u% q9 ^7 E( m
' R/ f; M7 z7 B7 ]$ u) k
to initialize-settings. L1 I* a. T& {5 r' ]" v- t* r" ~( N

* @: y6 O$ v' v. r. Mset global-reputation-list []

9 u0 j* J5 Z# r6 W  E9 c) N5 Y( K- K& R0 p3 g7 y. i
set credibility-list n-values people [0.5]
1 ]4 e' M" l, G
- P# J/ A7 ]: y, p7 F! C
set honest-service 0
' Q+ y9 y: ^% U/ L: Y8 \
& t# p' L. M  n- I. @$ B8 |# S2 D
set unhonest-service 0

) m8 r5 y2 z& |" W. l, i- P$ i8 e" Z
set oscillation 0
) c  }: _# W% z4 |

5 c6 ]7 h& m% {8 \% f3 A& K! Q% Qset rand-dynamic 0

# A) ^; e: Y$ m2 L/ S- C* r. yend
$ K5 h; B2 G6 e) ^( {
/ l) ?5 O, `4 r! M- B2 D' q! U7 wto setup-turtles + c3 l* r# h* K9 X
set shape "person"
  x9 D2 l0 s0 `  q; p& Y1 Hsetxy random-xcor random-ycor1 ?+ y+ k8 u9 d+ A! a, G
set trade-record-one []# t5 u* j5 S: D& N$ d3 E
# ~1 a. V4 v  J8 |& M  K
set trade-record-all n-values people [(list (? + 1) 0 0)]
7 W' |& y& r8 Y# s8 k
" d4 ~; @, Z& E/ f
set trade-record-current []
$ q' c: m7 ]! i) ?2 C: s5 Nset credibility-receive []4 [' V& B  R) z& W  |8 ^' g! C; w
set local-reputation 0.5
+ k  F$ i. `# q8 B- d$ v* c' dset neighbor-total 0
" \2 @9 d' }, q3 c0 F5 }set trade-times-total 0
, h7 h: W& c0 `- K: Yset trade-money-total 0
' I' c7 j4 {" J* h; f2 R3 x6 nset customer nobody( b, s6 k% c7 I# M3 t. @
set credibility-all n-values people [creat-credibility]
- J# }8 r5 {6 S5 \set credibility n-values people [-1]0 |# `9 ]$ D: a. l$ ?2 j+ E
get-color
' T" J$ x  G1 t4 N5 I8 e" K1 E

; M) R0 d1 X8 Vend
& g4 {6 a6 D) u% K1 P1 E8 a' q' z1 K! y+ P3 Z; E5 ?$ B
to-report creat-credibility9 ]5 ~* z2 h, g; N( F" Q
report n-values people [0.5]9 _" I; H) M6 r- ?; i
end
% a3 H/ t! ?! p* @2 b' v0 [2 L/ ~
6 n( ^6 o- q& s9 t% M. S0 W) ^3 @to setup-plots3 B& {& ^1 m% F" c2 h' k) n

) k/ a7 r0 J+ @" dset xmax 30

7 z+ A; a- ]5 P! ~$ e0 H
* d" I& ]: [, B) e. w* oset ymax 1.0
/ F% ~3 O" [+ Z- `8 j
0 Q/ i$ L/ A' x
clear-all-plots

# l9 t: O2 {" n% f) ?
/ J# r3 w5 ~% y$ I& @5 r" {& Zsetup-plot1
8 R: B* ?4 d4 l$ ?" g7 X
5 b, v7 p8 ~% t  i3 P/ r% u  M
setup-plot2

/ I1 F6 D" i4 n: g2 }: [& \1 b6 {" ~" |0 H  W- K5 m4 f
setup-plot3

* k3 N) c# \8 R6 u/ wend3 L$ z6 `! W8 j( l
* Z1 ^* I" M: i2 j
;;run time procedures
% s! v. o3 l1 I  Q& U9 a3 `) S- I( Z7 f+ S
to go
' E. h7 e$ g* c3 R7 V" i3 t2 f* G$ _- j2 R! _) O& T# |+ _
ask turtles [do-business]

2 Y. W* s$ D: A$ v4 l$ tend8 e8 R: c" v3 a( x: b' P6 T% ~; z$ Y
4 B* @/ b; c  v5 v
to do-business ( W% r# R- R9 @$ [* z

" Y( H# O: s( ]' w: p( a2 O. K( d( z0 b5 e
! w' {; n' Z' y1 ~rt random 360
  N& \6 k# }# C9 _2 S$ ]( o% L9 _. f- P

$ v' U8 o0 }( R5 Ffd 1
2 `" }% f' B0 ^

+ N' V" M0 {7 H) ?2 s: W& a/ pifelse(other turtles-here != nobody)[
6 O: Q/ c0 S* s% V5 h& u& G

2 j* {, D& _5 f; k& `6 t8 ^set customer one-of other turtles-here

  I1 ~2 E! `& g$ G" |
- V- }, F- H+ y9 Y;; set [customer] of customer myself

' \  K' K+ [1 J( |2 ?) W3 M
7 m8 T& M( g: t0 k0 \: j1 yset [trade-record-one] of self item (([who] of customer) - 1)
; J  E' P" y: T3 P[trade-record-all]of self0 _& _  c, E0 V4 v7 Z; {
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* g& \9 _, x. [* G4 E8 [% @% f. e) `2 `9 E! m6 v( F: i, G* l
set [trade-record-one] of customer item (([who] of self) - 1)
/ D# R% D% g; i) b& S; ]7 @[trade-record-all]of customer
5 x- R: L1 K- _3 x! }

3 Y9 W9 L$ T" dset [trade-record-one-len] of self length [trade-record-one] of self
+ g* u2 _: U; _! ]

' r' x1 Y9 C. H$ {set trade-record-current( list (timer) (random money-upper-limit))
3 ^; d  V, K2 ?; v* v4 \
$ D& a. h+ \# A! V
ask self [do-trust]5 E) [( m- y" |7 ]7 D5 y
;;
先求ij的信任度& N9 g# s9 b" p# [
6 u% X/ v7 }9 S' L1 G
if ([trust-ok] of self); _# I9 G) j0 z  l. L7 G8 \$ P
;;
根据ij的信任度来决定是否与j进行交易[
) A& C5 B' W/ g- Mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) a% n1 l# z& k0 O! t
1 r( f5 G' [- |$ k. o3 E[
  i4 j& k! r+ a" l

. m. A, Y) v% E- Xdo-trade
8 A6 u5 z6 B4 E9 R% o

! M. u% C; q8 \9 d2 Tupdate-credibility-ijl

2 J: F8 o) l+ I5 x& L/ M2 W7 q4 n# U6 z9 W9 Z
update-credibility-list, z* G# I* `, c

( X6 u/ C$ [  j- \; A- c8 |2 {, k! H7 }2 b
update-global-reputation-list

8 M2 e5 \9 K4 G2 Q! c
0 W2 O' O6 r& k& J) F' t/ Dpoll-class
+ N7 c+ j% H4 P$ n+ t& T
/ p* O  ^- J* U3 T. \
get-color
5 ?/ Q3 [7 F; J  B# U
) i( [0 q- d$ m' x
]]
: K* G6 O- X+ ?/ e5 @( T) S
$ G: Z( d0 b& c, R8 @* ~5 ~;;
如果所得的信任度满足条件,则进行交易& }$ n+ Q. s! S# t  n

$ h9 E5 b3 W3 d[

4 i5 q9 K) i( q3 v( Q
3 z2 ~: \, D8 }1 Q& krt random 360
0 Z7 r/ P0 h/ T. \! Y2 _9 `

6 D% j) X+ @* i. C. o# T, V- D1 mfd 1

# d+ L' N% N/ Z+ j$ k: ?" y
# j) B0 x/ W) `( G4 Y]

' o3 Z! W( X0 x9 W1 ~0 x6 h/ d# J7 x/ L4 R
end

6 N5 j1 K% `( n8 G
8 F0 Y* W, g% g4 p$ ^; rto do-trust 9 m+ _5 k! ?/ i: v* Y, }
set trust-ok False
; g; D/ J3 d  D& d' O7 Z- n2 B8 Z# @# }- g: x

# g0 s9 K8 q% x; mlet max-trade-times 0
7 P& P7 g- Y' l  Zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
# Y8 B( U, R6 l2 Tlet max-trade-money 0& a# q+ c  Y, S" L+ ~; r. g& \
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 p/ M6 Y: s5 }! j4 c. nlet 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) I6 {5 n5 |; o& h% D: _0 h  f' l

+ N- Z2 ]/ Z5 G+ w) k6 s: d4 u

1 V/ o1 Y7 B1 a1 X6 Bget-global-proportion- w) b8 c  _9 z7 l
let trust-value, H  Z  Q6 B6 `1 g8 }& @
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)
; R9 S2 O- J4 @; f4 {
if(trust-value > trade-trust-value)
) R5 \$ {! a6 F5 G- W[set trust-ok true]
# V- b4 k5 d. C0 kend
5 P3 d& f- }! K1 @
& V0 h0 {9 `' N  |$ xto get-global-proportion
8 T( n- e* G, Z" {4 Zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
' \8 z) g0 L2 s6 H. j[set global-proportion 0]
" f9 ?6 D/ A  v! ?[let i 0
6 z. _7 v! P# i: W/ Glet sum-money 0" a1 J# y" D/ }2 ~) [! p
while[ i < people]
0 D7 g$ N2 D8 o  w( ?4 H0 `[
# l4 w2 S- \' d' ?if( length (item i" S' I0 ?: l% }/ ?8 R
[trade-record-all] of customer) > 3 )

+ D/ |1 J0 I/ T% B[2 Y) |5 Y6 @4 x9 C' p7 N0 {. s
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 F' h" _3 i$ o4 |]/ r! t6 p" @1 \: b% b
]8 J8 {! i, \/ Y* u, g
let j 0
. S6 q; J3 J% R7 o* U- c) wlet note 07 N# j* W8 }( G/ O5 a
while[ j < people]
2 [9 R9 g: u- O! T7 z! ][
) w+ N2 F9 [! C4 z8 U7 hif( length (item i
: X+ O  i' F: `, k) s0 H[trade-record-all] of customer) > 3 )

  R& t7 N# d2 c: p$ U/ b% S[
4 c! _' p$ J1 a4 d5 G) Iifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% H2 u2 T# _) H7 H, N
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
- f! l2 N6 }+ |  A2 p5 }& ^3 T& x4 o[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" j. U& y1 ~* t+ n5 ~( V1 \
]( O  Q& ^; s+ g6 U2 W% ~
]
. I$ }, T" t& R1 Tset global-proportion note8 a' h/ i2 `# e; u# A( U( X4 ^
]7 u0 {- m: x2 n" v, ]
end
! x- R) I+ `6 [
5 c- @# j3 ]% J* }$ I0 Qto do-trade
/ X2 d) S! M$ }. P% k. g7 H;;
这个过程实际上是给双方作出评价的过程; N8 f) K( P4 d
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ @4 Z, {% L; a* ]1 Rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价. K: ]  p  A# Y% [
set trade-record-current lput(timer) trade-record-current
: d6 s+ M& i  T& j# K;;
评价时间0 ~* `) |/ K2 m' r# V" Y
ask myself [
2 f; u, j. x4 U: mupdate-local-reputation7 d& m; k0 ~: F! D/ z) }- [
set trade-record-current lput([local-reputation] of myself) trade-record-current
+ \+ m& l: ^' k* S+ ~. G$ }# b, ^]
. f; z0 ~- s+ g' K% iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- _& }6 U1 i: x0 x  S- M2 N) |;;
将此次交易的记录加入到trade-record-one
9 F% Y4 _  u3 n( L& _# K5 W+ Gset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)0 A* Y* Z" j3 ]1 U) x
let note (item 2 trade-record-current )0 c6 V4 z) S: M0 w! r0 t: ?
set trade-record-current; C& U0 ?$ z/ E- C6 z
(replace-item 2 trade-record-current (item 3 trade-record-current))

9 X* o0 ?8 I1 Z/ W8 }  mset trade-record-current5 V+ U+ H, l. J+ S
(replace-item 3 trade-record-current note)# ~4 K/ ]9 n; {" z5 W

. j, s: d% q( q5 N  w& l$ @
  u5 Y0 v; v* ?0 |2 y/ \
ask customer [1 _, J% y5 k6 q1 X( d5 A3 ^6 k8 }
update-local-reputation
3 F3 t2 ]! c/ k. Z) @set trade-record-current. P. F8 U  w' L1 @) S' W( N6 s/ W
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ H, ]" q$ q5 j/ L" m
]
; [4 R% D* v9 K& R
4 F( x3 D9 y! y; L) i
- E/ A6 M( b9 d
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, }1 \8 u2 Z1 m3 }: \) B0 w* `
7 t% v- j8 ~/ B# h2 T. t
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' _9 q0 N# c, O7 o' x
;;
将此次交易的记录加入到customertrade-record-all
3 U, a) B6 F% J! h+ @, fend' V" f# u( ?* x
+ C6 w" Z: D, L4 {$ ?" M: y6 e# M
to update-local-reputation
- l7 p1 U9 _  Q0 j; @' l$ U' ^1 yset [trade-record-one-len] of myself length [trade-record-one] of myself
3 b. H7 o$ i0 s" J  E1 s# P5 z% S: `3 [( ~, g/ X! _1 K, W
; k+ r6 R- z0 C+ F7 L
;;if [trade-record-one-len] of myself > 3

+ @: X  c8 z" d* N( ]) m+ c$ eupdate-neighbor-total
8 V5 v5 g/ |2 M$ e) ]- T3 V& O;;
更新邻居节点的数目,在此进行7 S" a! C0 @$ y7 J. H
let i 34 `9 e6 S, W! Y& S: S; S. e
let sum-time 0
# `) r1 V; K* o  zwhile[i < [trade-record-one-len] of myself]
* \* w5 l0 Y: O$ P[
* ~5 I* Y, `3 ?* Qset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ L8 {$ K8 k" D4 i5 M( iset i8 k, U7 S) d7 _+ [) S! _
( i + 1)
1 }- u9 s: y' I
]
2 [9 t  `" \% C% `let j 3
6 |% P0 w) i' ~/ K3 X' klet sum-money 0
! q5 z* |# o/ bwhile[j < [trade-record-one-len] of myself]' Q: H, C1 E" {0 o0 J
[2 o1 M" {( Y* e' @* d
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)
  N2 }4 l" e) u7 d0 i" ~* Q: a2 Hset j' N2 g6 Q& u  f8 U
( j + 1)

$ a# n. {' K2 `7 S0 N. ^$ X]( `1 m. V! s- P& H2 g
let k 37 \4 L# I& E8 E$ O+ Q
let power 0- r; g) I* F& ]+ Y: S9 ^
let local 0# Z' z: r0 ]3 @3 W7 D* p
while [k <[trade-record-one-len] of myself]" @0 b9 }- C% h  ?: |
[
% D& y4 Y3 a! Y  B8 p1 k$ w, F. ^9 Hset 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) ! p* s. U* ], v! G: T
set k (k + 1)
& X' i- s7 H& d]
7 w$ g3 b. l' A6 `% \$ w: V$ B3 kset [local-reputation] of myself (local)" h! b8 [, h- f& N5 T! g
end
9 j0 Y6 ~) _" i
% v# D5 h7 x9 @1 B4 v* Wto update-neighbor-total* y9 G: n* U& V" C9 t! b7 j
; H4 ]) V% W: O% e( J3 a! ~
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 g0 t( e" }3 Y* {: u- O$ \: A7 T# B9 Y) E1 |* ~- a9 H
3 r- T  L, D4 v5 k: |9 L
end
; c6 i- L7 L5 o. A1 [) ^+ q
+ p& J. }/ x7 p0 _5 D# P, }to update-credibility-ijl 3 j% q- B9 \) {5 L5 z1 V$ ]" {7 M

2 Q  n1 d! t0 B0 X2 w( z4 T;;
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 Z% ?" m6 e0 n( o/ Slet l 0+ u! u) h& q! C7 r% ~
while[ l < people ]$ k- [5 U0 R1 ^# H: I. i# i' j
;;
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$ P4 j: a; z. H9 z7 \4 S2 @  e
[
  r) w! I7 u) M1 olet trade-record-one-j-l-len length item l ([trade-record-all] of customer)" t9 J+ h7 I( H2 {( d
if (trade-record-one-j-l-len > 3)
: w4 h; L! y- l* e7 ?[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; [$ ~+ S+ A3 I0 r8 j! i' A( G) Y
let i 3
  y0 X* {8 y! q6 ]+ g+ R- Xlet sum-time 0% ?0 l8 h( U( L8 l7 H
while[i < trade-record-one-len]4 C) M9 [" t! v  ~9 d
[: G3 W8 Y- E2 g2 l7 `# g: a
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): |# D( [7 y) @" w: z% M/ j/ S' l
set i* \8 T! t3 T5 O- U. L6 i& o$ Z  @5 y
( i + 1)
& m) V2 K: @/ Y* u, j) P% A; j9 X
]  {! ^& V5 O/ y# m& ^
let credibility-i-j-l 0# W. d! {+ x7 V+ Q2 m' ~. m
;;i
评价(jjl的评价)! W2 l9 U$ C! B5 ~: o' F9 o
let j 3  g, R& |! h( C8 ]: C9 q8 ?# H: A
let k 4% z. b5 ~; W: z, t: G2 x9 e
while[j < trade-record-one-len]. F1 n/ E$ P! ^: G1 j6 U7 ?
[% L8 {* B: y; c5 e
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: E9 n( ^+ 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)  ^% r+ }  _( L; h* Q+ a
set j, \6 D  }0 @2 N) `# |
( j + 1)

5 O% v) z' j9 K4 g/ a2 c]
2 c3 z2 X5 |6 h8 ^. ]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 ))0 c6 I0 |7 I8 k  R

3 m+ G+ N; U3 K- |9 ^1 g  N' {1 N! g" ~
8 E4 S5 s8 z  }  F2 n; m3 Q' ^
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# i3 N5 r, J( p! N2 X;;
及时更新il的评价质量的评价
: o& ?1 p  a# f0 P% e3 N( i$ Nset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ S1 J' e- q- g5 {' pset l (l + 1)
5 ~' @9 n7 e3 L+ C]
  Y- t4 g0 _% iend3 O3 C( }1 q/ K

( V/ q- y9 ~2 W% _7 T1 G* vto update-credibility-list
9 I) h$ z& Z' t+ {! ilet i 0" h- s% ~! E# M0 `! T
while[i < people]
/ w) Y, L( G4 R/ `1 I# \' j* i[
8 [  \: M6 |0 f. O" I7 F5 _let j 0
7 y* l, }( O! v0 [) dlet note 0
1 D' Z' }/ ^1 A: {let k 0$ l" A( K( e$ L
;;
计作出过评价的邻居节点的数目  w* u: k  c% i3 Q3 ?
while[j < people]
% G9 U& S% X, B  F% z! v[
6 [8 I4 ~' E+ g: ]8 ]if (item j( [credibility] of turtle (i + 1)) != -1)) c( S9 O9 r9 f" x: b
;;
判断是否给本turtle的评价质量做出过评价的节点1 J" _/ z: k7 y: d4 L0 Y
[set note (note + item j ([credibility]of turtle (i + 1)))' {* x, O3 o+ \6 M
;;*(exp (-(people - 2)))/(people - 2))]

" F) u! s2 k% Rset k (k + 1)
& v0 I0 e& e5 ?]
+ z/ j6 Q" H2 `+ w* y  }8 n% bset j (j + 1)- j7 Y( l" F( a0 f
]6 D# D' e5 v# J7 `1 g
set note (note *(exp (- (1 / k)))/ k)5 y8 w1 C" h9 D. z0 C) p* @
set credibility-list (replace-item i credibility-list note)
* Q' t" I9 F" O# c1 mset i (i + 1)
1 \( U: [/ W/ p9 a]
6 d" L% B1 G5 t+ u; b  p( }end
& a+ J0 u5 z  N- R
  k+ L% m: ^; R) h2 U4 Uto update-global-reputation-list9 ^' M8 C+ Y8 Y2 U% D
let j 0
  Z6 s  O! F) K6 zwhile[j < people]$ D" ~$ V+ @8 V& l8 c/ p, I
[
5 g3 X+ U: x% L' Llet new 0
/ k# @5 n1 s: Y3 U& ~6 T$ };;
暂存新的一个全局声誉8 {& R) S' R) l9 T4 _  i4 u. N, j
let i 0$ {( j5 ]9 l1 |
let sum-money 0
8 E7 O2 N" d7 t! p/ G. X- ~; ]let credibility-money 0
, W# ^0 ~* |* Z* T' [while [i < people]
% \  W; e0 }% ][
8 [1 l' |! N: Z9 C0 D6 M9 v: r; \set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& B4 \9 v, @& m
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! }4 H9 \) T. M0 U9 T
set i (i + 1)
3 I/ D( e1 `" q]
+ B- b) v( \4 L8 {; `let k 0) w; ]3 i# @: _
let new1 0* p% p* H) Z3 s7 D; y/ Z
while [k < people]' \0 i; _7 j8 v7 k& u
[+ d6 B+ c$ b7 R0 L# C1 u( K" r
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)
# j% v: ]) s& S7 Oset k (k + 1)
9 M7 h" S$ `3 X- O" u]
( K& d4 W5 n! M4 f7 Wset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 y( Z& e0 [2 b2 f& W$ b2 Kset global-reputation-list (replace-item j global-reputation-list new)
: ]( x' O3 t$ }) vset j (j + 1)
) h+ `9 l  Z7 F* L  x, I/ C]
* D8 X6 k# c' _3 _; Q  J% ~end; L2 e9 a+ w) d
* B( d3 G6 U- O% Z$ m( k
# ~3 B! c+ _( v4 @, {
8 E5 @+ B: |: P
to get-color
/ z& G8 I2 E1 C
3 z' T8 C& c. _) w: Q, z8 R7 I, `set color blue

! o' Q0 Q1 w4 S' ?( Dend
2 N% \2 j! S, w$ l: m+ a! H* o& z/ t/ Y6 ^' _
to poll-class
; G5 }! |8 f* W! c. kend
9 q' j# d: {5 j) G. x# L) l/ T! e% @5 P& L' o
to setup-plot16 {- Q1 ^8 c8 W8 Z7 l! W: O% t

9 m+ E) T6 P7 N  x) ?- u5 Y9 `6 wset-current-plot "Trends-of-Local-reputation"
' F- w/ E- d0 z# J) o; ^
" x2 M0 Y, t2 e
set-plot-x-range 0 xmax
0 o$ ?% j9 ?4 I; ]2 R6 L
0 S) F% E2 `, ]! d  }) P  l9 H" }
set-plot-y-range 0.0 ymax

& B) ~% V9 L# C" }. {5 L4 q$ }end5 T1 v' ~1 W" a( E
' {4 r; E, Y: |8 w
to setup-plot25 N+ }. O+ s. u5 [. u

! W1 s; ?' J* h6 j  j# P8 Lset-current-plot "Trends-of-global-reputation"

- O9 y4 F' B0 q& p
, E% T5 U& n: Q0 G, k1 E# oset-plot-x-range 0 xmax

" b& D4 X% ?/ a+ G  `  P! }2 S# ^+ u' W/ O. j  S
set-plot-y-range 0.0 ymax

/ N- _" Z: a  Kend
9 |2 [6 C! ?) \. d0 x' _2 U8 f' J
to setup-plot3
0 v! y- @- ?3 P6 D! l" D; o, C2 _8 y3 w* G' Q' [/ D
set-current-plot "Trends-of-credibility"
1 F, t3 i  O6 P! z, ]' f

2 ], U1 [( I0 S+ U8 L* \  Xset-plot-x-range 0 xmax

( w3 C; ?4 G$ S) ?8 o# g
" {0 e% Q, x0 Q. N1 E' Z' }+ ~set-plot-y-range 0.0 ymax
) f% h* K+ x- S8 R. J
end
; r+ }1 D" M! _5 u8 L
: w+ R7 d  T$ Hto do-plots& }1 e$ F! H8 l. c; j
set-current-plot "Trends-of-Local-reputation"' m( P" x" q& ]# Z. Y
set-current-plot-pen "Honest service") _' S7 \5 n0 I2 s- B, J* y/ v" u# P
end
& g" |6 S4 W0 z' h/ a) o; s. v- ^; u' l1 L8 Y
[ 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.2 o, b) k% Z/ T! a7 O5 I

! {. T. x( H0 f+ 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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