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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:
% c, ^* ]& j4 ]to do-business
/ G# _7 _$ S4 Q3 o# `; j rt random 360) [* V# M1 w8 {" M, Q' v9 \) S
fd 1( M! _! Z3 D6 F
ifelse(other turtles-here != nobody)[
$ @! ]4 }, T. v8 |. G+ U, \   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.. W1 _5 _% m! b+ c" n4 ?3 M7 |. X
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( G# o  n6 ~3 O5 L2 A
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# h' L1 U3 U# q- A   set [trade-record-one-len] of self length [trade-record-one] of self
) m6 G. j% i1 }1 \3 b   set trade-record-current( list (timer) (random money-upper-limit))
+ t+ \, W( S( F6 V0 t* @# `+ o, T- O: J. L
问题的提示如下:
) H& E; k, r3 K( o: Z9 X" x/ W5 U( @4 ?2 y/ Y; Y
error while turtle 50 running OF in procedure DO-BUSINESS
, ?/ [7 c. m; t3 a; C: z& M  called by procedure GO
% ?  H" i- c3 o5 t2 U4 I9 yOF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 w6 L- ~+ _# Y9 @( ]. |. `
(halted running of go)
/ |! `+ e# n4 h, ^1 T* S. T5 X* f
& I/ x3 v" c* I# ~2 r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~~  l( W! S2 {8 i! {0 }& z9 d
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
. Z. q% }7 o- P2 _$ Yglobals[- g& t' J# _+ N' K
xmax5 l* {5 F" g5 P$ s' r& b
ymax
' @  P2 X" @3 H  J2 w' \global-reputation-list
! E7 i! G2 h: W2 Q: x4 s1 Q4 c7 C# d2 {+ y: ?& k' ]
;;
每一个turtle的全局声誉都存在此LIST
0 T1 g7 f( l0 B" X  s0 D) ]credibility-list
8 f4 P& U- N' y;;
每一个turtle的评价可信度
% t) [" J# ?" Lhonest-service+ `7 \4 N# d, I' Z* f! h
unhonest-service) K6 S& m" Z( Y5 [- B8 w
oscillation
& Q7 c/ r7 ]0 A4 U# c9 ~+ Nrand-dynamic
- ~' R, T/ s1 J% f! ~8 F7 ~]) X) k: s# c: S( Y' [

' O+ W1 o6 i# x$ \2 B5 B! aturtles-own[
% F9 z$ X! P9 i8 {trade-record-all
3 H8 F  e2 k* \: s5 ]( ]) Z( y;;a list of lists,
trade-record-one组成8 B+ b  a. C4 H+ i# b& w* ]
trade-record-one& s6 n2 M* B/ Z, t
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录! f, a2 d8 a+ b9 @$ U* w, Q

$ J. E# r9 D, n% w7 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]]
- ?  P! v! ~: e/ \1 n9 Rtrade-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]
& T3 Z0 i4 {& \# J6 O; C# \$ `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list4 `5 ^( y) a) S. N2 e4 U
neighbor-total
' u% G9 B: n  j7 i( R) H3 t2 H;;
记录该turtle的邻居节点的数目- ~! ]! D2 X7 d8 D
trade-time# t; N3 [- D% Z) L9 D2 ?
;;
当前发生交易的turtle的交易时间
1 G5 U' ?) P8 j+ q) E! }! Tappraise-give0 D2 ]) G7 j; Q" O. M; ~
;;
当前发生交易时给出的评价
5 h- ]5 z" g+ R) qappraise-receive
7 g4 f6 ~1 a5 J1 `;;
当前发生交易时收到的评价
0 q6 _& o/ T* aappraise-time
, V0 D5 Q4 x" @, ?( v3 n;;
当前发生交易时的评价时间& v5 @/ N4 Z% _8 X/ P
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 y' i+ n# j6 f  k$ A# |2 n% N) Ntrade-times-total3 u! D7 g, H0 s: F# A" J
;;
与当前turtle的交易总次数
  n3 f# N# r( r4 k6 n/ Jtrade-money-total8 v& Z0 `. ^+ d3 E/ f; v3 K
;;
与当前turtle的交易总金额5 |5 j8 f! d- N" h1 o
local-reputation
" K" `! o- r8 D$ Qglobal-reputation$ p" n4 Y" y5 H: ?! L' Q
credibility
: t" e+ H% n' M  ^;;
评价可信度,每次交易后都需要更新6 D! g, n, X$ k5 ^
credibility-all
! V& K! ]8 f8 |& O9 s' e;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据- h  M. C. I1 p* V1 C' }, P5 f
! ?4 @+ t8 M4 R
;;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( |4 ~5 F# |  y2 P
credibility-one
' t4 A! D/ b$ c3 K8 p* f;;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people3 u; W* a$ Q- D
global-proportion) ?1 T" n. \9 Q3 P
customer
0 {% w- v7 z; Z/ s7 dcustomer-no
" F- ]. p/ C9 a: H& ~; a1 O' Ctrust-ok
0 _8 m# T4 S, [8 gtrade-record-one-len;;trade-record-one的长度
6 Y4 e' d9 F' `; f" m) e]5 s2 q/ @5 n/ h: w

! U/ m$ T' P4 l2 Y2 Q9 D& j( ~0 u;;setup procedure
  R9 j' n$ P: X8 W, [7 v$ ^, _2 Q; R( h4 b& Y& f* n( r1 u+ X# I7 i
to setup# y0 P5 _  z) A- j! e

: s$ l0 c2 n3 w' F% M; a; Q+ Lca

# ?2 u" d, K5 B% r& V" w  w# g& h
initialize-settings

& ]! t# a, d; A" L5 h+ d9 |( K0 r# a( ], a$ ]# C( S. G, l$ N; e) [
crt people [setup-turtles]
/ i: G" D! ^- B3 O
9 c0 Z( i  c# l% r
reset-timer
9 g# R) B7 M8 }, j# y
/ T( w# h+ I" L7 F: P/ `
poll-class
2 z7 z  g$ B8 H6 l

& }& g  F; a) z, l% q5 v  e: {setup-plots
" A7 v7 }) o3 z8 }1 Z
9 L' r9 |* y6 e( l) w! u! N
do-plots

4 b' X' ]. q6 Z$ eend# ?3 \$ F* o' S- d! H" Q

" s: T2 A- q' \to initialize-settings+ A. P: c. d2 |. g9 ~
4 S# ^/ u: |1 L  U8 b% J1 f( D; M
set global-reputation-list []
0 M% P6 @" G- X( j$ w% q5 A
) L9 Y8 a# t: p+ N
set credibility-list n-values people [0.5]
. d- J+ U* u5 O+ H  V6 {# |8 o  V

3 W4 q- C) h* O7 C6 Iset honest-service 0
% {2 W. r+ ~5 v
4 v* O! |* q5 c4 i
set unhonest-service 0
- E7 [& J$ c. P% l8 \

" Q0 _7 l8 x* g+ R- d7 e. lset oscillation 0

4 C7 }9 V/ {: y9 s( `3 @
0 Q2 P5 T& A& I  K7 qset rand-dynamic 0

3 e, W1 O# a$ O5 s  H8 kend
& q. \0 L, m+ \" @+ V: x, u
2 \' r; j) i5 S* {to setup-turtles
0 k' m, h6 W; M$ a+ f$ n2 y8 \) |) _set shape "person"2 o: V' Q9 v" e- e
setxy random-xcor random-ycor
/ }$ Y7 A6 d$ c' `$ m+ A; R8 c: Zset trade-record-one []
% x1 L3 b7 ]  h) M" c$ k, g
1 N# w# M1 q) S7 v( s, J7 C! S
set trade-record-all n-values people [(list (? + 1) 0 0)]
/ Q+ O) m# v8 E9 s5 L6 w4 M8 T+ }3 J) C
: E, i. X, N8 x* Z7 e6 J
set trade-record-current []: K8 T, L* h2 ?& O$ c
set credibility-receive []* a8 s7 J) H. _9 a8 `8 ]4 B
set local-reputation 0.5: `' M1 W8 _6 {  w: X/ t/ N8 G
set neighbor-total 0
- f, A+ p- k# Hset trade-times-total 0
, y& |$ i! g. z7 Xset trade-money-total 05 k. T2 V+ P( C9 E# s5 K- Y4 y
set customer nobody8 R( a/ O% }2 D# m
set credibility-all n-values people [creat-credibility], A. t# r' a) a1 p
set credibility n-values people [-1]
7 W. r2 b* a  I5 k6 x- pget-color
) W4 j' Y9 P$ R* e

! t0 a# I& q/ \( N9 tend
% Y& D$ m, ]6 y. Y" f' U% D+ i* }/ h
to-report creat-credibility
0 _* v4 y8 @0 o. a# Lreport n-values people [0.5]
) _: S3 u* ~, v0 c' H; Qend5 F5 Z) C* g$ g' E/ M- Y4 w

8 C# [: @* \) Kto setup-plots+ X: n  H) t- B1 I
- p3 j7 p$ Q3 n
set xmax 30

  D& J* A1 a- m5 o" c8 d$ V5 \( P: H# p! e, x8 O
set ymax 1.0
3 j9 h0 B" h% |: u

) Y' s6 Y3 S0 Rclear-all-plots

0 j* o( E; ~/ W4 a( [! }9 ?$ {- B) D& k' k
setup-plot1

( H' d6 Q( ]: J! u1 y
- @: o9 D) Y$ _( Y/ L1 _setup-plot2

2 w- F$ D# d1 @1 ?& y8 |, d. f: ?; t5 c7 o% H8 v: w
setup-plot3
9 ]' ~4 n) l6 l! i4 O
end
: ]7 A) f) x' b) E
0 s" }0 N7 c  V2 T# o;;run time procedures
) W2 E- `5 U* e( c  h1 W, y8 V% h  b/ [3 i: Q7 V0 R& }
to go
* n; W  m- H# S$ m: D
9 N* m+ {* o- |1 Pask turtles [do-business]

8 |  V0 }9 E# [- P: {6 rend1 M3 R; o. h& u  b' _, `8 N
* K) |$ O( r. u: q7 H
to do-business
" X2 u! d" Q. T, T$ q" r8 k9 c) _

! p6 t& i1 G# g; R+ g, z
5 f! B+ Q- Q0 Y2 `rt random 360

6 h  b6 f# Y5 ?3 B# J+ L0 ^& i. {# M* R4 R; K4 I& j
fd 1

3 p4 m, H/ o1 ^( c! A  l4 M3 ~% f$ t6 [( S8 U
ifelse(other turtles-here != nobody)[
, D4 C2 e) g( x; I  V

; x  D: n& h+ }4 @set customer one-of other turtles-here
. u) z" q) {5 d; j( l* U5 p
3 A& q: K" ]- ~0 `$ p2 B8 B
;; set [customer] of customer myself

( G2 t) V! ?8 K( F8 y% F0 h" U* h, T' T4 x# X4 j1 i: ?: N
set [trade-record-one] of self item (([who] of customer) - 1)
! h  g7 z, U* i* x; ]5 j6 }7 ~2 }( [[trade-record-all]of self! V5 z, H8 ~6 B& t+ T! {' A
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 c) Q$ G4 F* i5 L* N$ Y5 U* T9 z( g& U, F: \( _
set [trade-record-one] of customer item (([who] of self) - 1)
0 g# N5 d: D' `1 {% J[trade-record-all]of customer

- ?. P5 ]. ?: \. c! R1 m9 P- C# U! Q+ t7 [0 J
set [trade-record-one-len] of self length [trade-record-one] of self
7 N1 n' a! i: Z
" {* z* t4 X4 V. K
set trade-record-current( list (timer) (random money-upper-limit))

, j7 {* u3 \8 w' Q# X6 h
8 M  g: l1 i% \4 Z6 _/ H) q, Kask self [do-trust]& L( O2 {- l' J7 V, u/ K* M
;;
先求ij的信任度7 E, Y0 a% ~5 J+ E
0 r. N) S8 u3 K$ H2 \
if ([trust-ok] of self)
2 g1 K  l; N2 q/ n;;
根据ij的信任度来决定是否与j进行交易[% T+ l7 c( E& z6 i! l% Z: M
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. j8 l& c8 L+ w4 J( Q) |- R, E6 p" H- d
[
3 H& W. p( }7 H4 ?( P
9 E% K+ U# r9 ]
do-trade

' P$ D. @  t5 }7 E/ C+ b
9 ~3 l- j4 L+ ^8 m% x( @  Vupdate-credibility-ijl

7 e( I# V* U5 ^0 N- u7 n; E8 D& Y1 q0 n4 m2 ~: u, h
update-credibility-list
# E- N! g6 D. u- @$ P+ l' W

' F! K/ o" O( w0 r7 ?* M0 P/ p$ k/ \* X5 s
update-global-reputation-list

4 C; ~7 v4 _8 W, x7 Q( _
& ^& z+ Q( x( [: I& L0 ]poll-class

, A! b6 a% \4 P7 z: i- `
# Y& z4 F5 B" ~5 N; c: Aget-color
+ {' i7 A1 X3 j8 g! v4 t3 B  Q3 I7 X
; |3 x, r  Y; Y' J& x2 D! o8 f
]]3 ~4 e: L  I- h( V" R+ V3 C

# ^0 g2 o8 F' c6 l2 y;;
如果所得的信任度满足条件,则进行交易" h6 v" Q7 _/ v2 F
$ u8 M, D- f% i' ]
[

! y. \7 y% }9 ^" o& N7 }
8 s. i. s( p( p! J2 @/ Brt random 360
7 @& |8 ?1 F# s% X4 g. q
& Z3 ]# p) Y  [$ W# N6 f
fd 1

# o% d. L, ^7 w8 K- m- i6 h' s$ I# w" y7 F4 T
]
! f. S4 Y! R  t( k8 |9 L
, L; F& q- |, F
end
2 c+ H0 L; }2 z' v
) V1 t5 P# T9 Z4 v6 D/ u* `
to do-trust % Q; O$ p" o1 U: I: e0 r2 p/ C9 m
set trust-ok False
6 R, B3 f" |9 z8 h. Z1 n
% B$ P8 a1 C, S0 H8 C4 L+ g
) C+ q6 K, [  T& a0 G
let max-trade-times 0- b/ m9 Z) {- X; x+ m& N
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
; A5 w( L# V2 k) Olet max-trade-money 0; `4 C" [1 N+ I  q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" F- ^3 G: a  L, E$ r2 p2 t9 \
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))8 h& w: y$ k; v+ z* `
5 v9 N& a' a- c4 v

- T! e5 ]5 l4 |$ c5 s. n0 d2 Mget-global-proportion
2 s  m9 j; ^: @6 K/ rlet trust-value
6 p, \; c1 M' y6 C# M5 V* G$ {' wlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
" n% }. W3 |2 \: E  s) C& I6 O7 n
if(trust-value > trade-trust-value)
. d5 C3 F; f9 ~[set trust-ok true]+ ~- p) S4 D. ^- U
end
& U5 c; |8 R3 s7 U# S: ?4 w' M
, R; i6 ~( D( Zto get-global-proportion. M+ a% J; e0 [' D
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( S) @! C& A: s8 C! l1 ^0 [
[set global-proportion 0]
' V& c7 S6 Y! L[let i 01 X4 l9 R8 B9 t3 F8 T
let sum-money 0
7 ~, ?5 R9 r) [$ D7 nwhile[ i < people]
7 E* E) Q) j5 P; G5 K; I' O0 T[. K- o6 {* f: a' L) T  ]
if( length (item i( z! S2 E' G& u7 C
[trade-record-all] of customer) > 3 )

* O8 j+ f5 l) D. c& _3 ^[, d3 M( F8 B  q6 ^, v1 u/ h- d5 s
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 P; s2 M* L& E. T3 X]+ w# t( q0 B7 C/ d" m
]
1 B* S5 q5 Q9 K" R& N! dlet j 0; X/ G0 s, n) `% F% h9 u
let note 0, x, s& n* X' t, D0 C: T
while[ j < people]/ ~5 J7 }" E" r6 `3 u2 c7 [& d
[$ P* }- K" n  C( H" U. q& o  Y
if( length (item i
* H7 l1 S4 I6 ^6 u2 X" R3 H6 P. a[trade-record-all] of customer) > 3 )
( q/ H( ~  N9 X& R
[
9 d$ S% Z5 D/ o+ n$ rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' y" c7 h" Q. i! @, s& d
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 P0 g# O+ v1 x. t8 |  i[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" A( ~3 z8 @$ d7 u5 u' q]5 N; l3 i: w8 m6 u
]
. ?3 F9 Q6 d! e) bset global-proportion note
" @7 _9 [9 H$ M, H]
9 z- q4 u; O, hend# A  N/ h: @  R2 N+ ~
9 N0 |  F% h/ t) D4 i5 E
to do-trade
1 A* s' V9 }& ^7 F# W" L- v3 j9 l;;
这个过程实际上是给双方作出评价的过程
# I" Y8 k: ?6 z! aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  @6 u* g0 c, F2 X# F
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价' E2 }) I! V. B- E  H4 L$ \" o! y
set trade-record-current lput(timer) trade-record-current
, K& C0 }! ~# Z$ j;;
评价时间7 {- I0 H. r+ f% L# A) p7 u1 l
ask myself [
% {9 z) _6 `4 U; p1 kupdate-local-reputation' f4 S' H+ Y- ]
set trade-record-current lput([local-reputation] of myself) trade-record-current+ w6 \* t0 Z& }9 c) f+ k
]
5 `. ?0 V: G8 x% \( yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ f& o3 x- h2 N" ?) V4 l+ H0 T, x
;;
将此次交易的记录加入到trade-record-one0 T7 J+ J: j( ^
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! I" d/ d/ {, [) O. j+ y" b7 C
let note (item 2 trade-record-current )
2 V/ s( L  k1 s7 Q& C& cset trade-record-current
9 n$ A. N$ w6 p" L# [(replace-item 2 trade-record-current (item 3 trade-record-current))
( u8 G  K- Y; F' V# m9 I7 J
set trade-record-current
& b0 M+ b+ f9 a' B5 w( B# U8 \(replace-item 3 trade-record-current note)0 _4 h7 \% V: Z! e5 I# q
3 y/ |9 _# I# e9 V

5 b4 p1 B3 W. U. nask customer [& X# P  Y5 H6 Y* B7 I" d
update-local-reputation
) ~; o& v3 ]: X0 b$ X% g1 Q/ X$ [set trade-record-current# ?/ J' a+ z  y, n3 \+ t
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ [7 {! N& m% `6 d]
- U4 C2 v5 W; o5 H$ A3 b4 E! Z# ]6 B6 I* O6 B/ l

6 m9 o0 s9 @/ Qset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: o& v  j8 N" S9 |6 N) V8 t5 d
- w8 F" O& Y: B9 ^, z7 {& }
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))9 j6 E, c4 b- B" Y- L/ ]- h( C/ Y+ Z8 t
;;
将此次交易的记录加入到customertrade-record-all2 X! _! P2 i8 u# o+ `
end
' f1 T8 v' D$ d% h1 s9 f. C- S3 ^7 I* L: L7 D9 X$ _, E2 Y
to update-local-reputation
5 M5 ~; V! {2 N+ Jset [trade-record-one-len] of myself length [trade-record-one] of myself
$ f4 D: P  y7 u# E+ D( t
2 Q. o( z! m4 d) V
* P; i! h/ ?1 P: ?3 n$ m;;if [trade-record-one-len] of myself > 3

3 K* P2 D% T  K1 W& b& }6 Lupdate-neighbor-total" `( `, o3 {$ N8 ^4 g6 u
;;
更新邻居节点的数目,在此进行
4 H" G5 S& L! B: nlet i 3' z( Q" N) S( F; Y1 J! J' H
let sum-time 0+ Q" o7 p% u5 f" O+ U0 ]: Y5 i6 \
while[i < [trade-record-one-len] of myself]% r4 f  `) V2 c+ L# u7 r
[3 X9 \8 ~" u, B
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) z: m/ a- O" s: }: h
set i6 z* s1 r7 B# L" c# m+ u7 A
( i + 1)

. D+ p1 i  {/ g4 T* k]" A9 S% m' d+ E* Q! V* Q+ p
let j 3! Q6 K/ F1 Q0 t. g* V) Q
let sum-money 0
+ I! n% Z$ r: b4 d2 b  Kwhile[j < [trade-record-one-len] of myself]
, p, e) n- w+ h" ]/ U- i[
0 W8 O" s4 `7 @! w/ Tset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
& I9 z* q; C5 e2 l  d- o6 }set j
4 [' p8 F# A, K# A( j + 1)

3 x( g7 j  m$ K' s]
, X+ `. S8 H- ^+ Dlet k 30 q$ c( G" n: E
let power 0/ Q& F+ l( o0 h& d7 G: ^
let local 0: C  k8 M# O: d7 @- X6 F. g, ~) h
while [k <[trade-record-one-len] of myself]
( [6 e7 F: A0 Q[9 [, }# U. S- L) y) z
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) 6 D: a7 Y; E9 Y+ \+ m
set k (k + 1)) K- t( m2 W% E! j9 T2 n. V
]
* P3 ]" t7 d& w' D2 Zset [local-reputation] of myself (local)
" B5 F4 h: V2 D8 k+ t2 D, Yend
3 \; {$ t) P. @* b" V3 A( |; T" S$ w* a- c
to update-neighbor-total
, `9 T0 h% \1 v7 L4 n
4 H6 S6 d) t8 @+ @: sif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 Y3 }" I4 b% x  Y3 R+ z8 u
2 t  ~% ~% @; [) l1 q: |6 D5 R

4 T' i8 Z: i6 E# H( F% n9 H- Eend
1 y# H, @6 \4 T# G" x
$ ]8 P2 o, T) o+ S  a4 D9 l( F3 |to update-credibility-ijl
8 a  v' v; n0 J8 m6 l, M
" W/ W1 w+ C$ `; B5 B;;
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。) R5 c) l1 f' w
let l 0
, F/ U3 c  K, O% D( C( Wwhile[ l < people ]% X% @$ p0 B& @! i- |
;;
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
0 }" D' x& y/ g: c[
: _9 a2 x2 R6 M. i" @$ x0 c0 P$ @% f3 Alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)7 A' z1 r4 q& v6 G& k/ D4 `+ a
if (trade-record-one-j-l-len > 3)4 T* C$ a8 Q! N5 D6 C/ l
[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+ B/ E* Q5 C5 v6 `! O
let i 38 ^6 Y2 d1 V# _2 R! C
let sum-time 0
/ I$ G6 B) i) {9 I# Hwhile[i < trade-record-one-len]* ^: K, ?  @$ J
[
1 D5 c2 r, {* [1 N) l  r/ z4 P) Dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
2 @$ b! l8 e3 P3 T  _/ \; l+ _$ Gset i% P  @0 ~% e* ^
( i + 1)

1 A1 K# A: h3 q7 O2 A& C. _]" Z3 S- N" e! ^6 |2 v5 d. S
let credibility-i-j-l 0
& u2 A: N4 r* v;;i
评价(jjl的评价)0 @2 F$ N# T  z; S
let j 3
/ C' ~6 L& g/ I2 z! Glet k 4
0 a" ^3 ^% ]! D6 M+ d5 i! `4 _while[j < trade-record-one-len]% j7 M! p6 k2 g5 ]; ^& z; F0 G$ v
[8 ^2 }  t" I" q. z# f( 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
' k1 c. e% J+ ]% ^. W0 cset 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)$ m9 r9 a  I$ ^; I& _
set j1 C9 U5 ^) z5 {2 e/ d1 m1 u
( j + 1)

  T6 d; J  ^- z]
2 g: f9 p1 p/ |  ]8 H( `3 K4 Y3 Qset [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 y& {& o; H3 F7 B
( f; W- A. K+ s( V$ q

$ N. }  V( G2 M$ O3 ^- Dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ B  `* Z3 p$ O* D( y
;;
及时更新il的评价质量的评价& P0 e, x/ w  t+ I1 T+ S" H
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 U: h9 _# G8 D( u: K8 e& qset l (l + 1): ]5 G. ^7 p2 E1 f% G! N
]
# F3 |! o/ U; ~* Cend
# V+ x' [! B% p
- B& [: n+ L& h3 R# V& Ato update-credibility-list6 [. v0 w4 T( @% ^
let i 0
" k3 Q7 D' a# I' ~while[i < people]
* m0 K* {$ u* e# f% F% @. r% B[! h5 z# ^+ h9 {( p' b3 K5 o2 _
let j 00 V4 z: f1 J0 w) y
let note 0
# ^) v6 l$ N  f$ B# k" i  Hlet k 0
8 {. Y8 O& d/ ^3 q;;
计作出过评价的邻居节点的数目
& S& L5 j8 E- u/ Q8 Qwhile[j < people]
2 C2 Y2 I6 q8 ~; ][# k+ b. D) ]* O# X1 s% p) ^. Y
if (item j( [credibility] of turtle (i + 1)) != -1)1 ?9 |7 j+ |- L4 f6 B* D
;;
判断是否给本turtle的评价质量做出过评价的节点* U- s) O$ |/ z5 I4 Y0 n0 K) Y* y
[set note (note + item j ([credibility]of turtle (i + 1)))
' J1 O4 e7 k5 L4 l;;*(exp (-(people - 2)))/(people - 2))]
: p. E" o/ i+ a5 l7 e1 A! U' o5 V! F7 k
set k (k + 1)
/ M! O. i: s4 y) y]" ~1 V' ~1 `6 E  U
set j (j + 1)) T+ X: V- H+ o' ], q% }; @
]
8 J& J' o# ]; y( z' L: Bset note (note *(exp (- (1 / k)))/ k)  M4 Z2 B, {+ V  D$ y$ Y" C- L
set credibility-list (replace-item i credibility-list note)/ D& M: |" J7 ]% l
set i (i + 1)
& I0 o9 I8 H) y% R) [, C+ d$ r]
) ?; D' v: o" [% a+ W$ S% W+ C* nend
' {9 x( d) i* n" O, R, Z9 x! \/ x+ v8 d1 p* c  I
to update-global-reputation-list
2 H% Y8 V: j4 x' [* S5 Hlet j 0
% i0 |: B0 Y) A$ r. U2 F; L8 s% a1 bwhile[j < people]2 r4 T$ T" l* n/ ^- @
[3 C) y: [* J8 i  [9 U. c1 O& M
let new 0+ u0 ]) Y& U: ]
;;
暂存新的一个全局声誉
- F) ?) T, W6 l+ c1 |let i 00 o: D; q+ x; }  ^1 t
let sum-money 0
& G/ t9 U& z8 O$ @4 T+ Glet credibility-money 0
$ U/ H% U# s4 w: o- Vwhile [i < people]
8 V. E% d7 b" F[2 e; }% \+ U& A) j2 |( K1 W
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( k6 `" ]& N' B
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' J5 W' `5 T* T# V" I* jset i (i + 1)
  S4 a4 u) |" a) \( V- @. U]8 M) Z1 v: @4 _- O
let k 0
% i6 r6 b) \0 k- u$ @0 hlet new1 0
9 e$ H/ t/ \. [' {) M) gwhile [k < people]
# Z2 H8 m# m( U4 N5 Z5 P[# ^  {( w7 p" e8 d+ B/ K9 U* Y# ~3 d
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)! H. F( _% k" V8 u; ~: k9 L
set k (k + 1)% U3 R) B( e  R
]/ B; Y' V$ D( D/ D
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
' r+ |! u: ?2 s8 q3 G! Q& V+ Oset global-reputation-list (replace-item j global-reputation-list new), z0 I0 F# N% F, u# L% z
set j (j + 1)
4 g; C7 l1 ?7 e9 I6 E]/ b; J, @+ A9 y6 L/ F  z
end( v# e4 E- j9 o$ c. [9 z

/ H! V, n, X) R2 u% J
( K( a* J  i/ S) |1 k; Z
0 ]. |" y( q7 ]; m2 @5 gto get-color$ ^# W( x7 y: s- G, H, e+ |/ l7 v
% k! ^8 z! A7 K' E
set color blue
! P$ v3 J4 {9 D) K* l# r' ]
end- ?  H8 ^  |* A4 ^. d6 D( C

. M) w1 I* t, I$ cto poll-class6 R- L0 U, I  z4 X: y  U
end
. P0 D1 N! h: s7 F/ m7 V0 [- a
/ r+ x+ R" O1 P( d% Q/ Kto setup-plot1. B- k! O" w4 ~& J
% b: F  _. _: c: D5 L$ v% L
set-current-plot "Trends-of-Local-reputation"

6 H' Z0 A- v5 i+ ^3 W5 f( Y# s9 F/ U9 t
set-plot-x-range 0 xmax
% o8 Y( }; k- [
6 M4 g4 M  D* q" s: k
set-plot-y-range 0.0 ymax
! s; y8 ~6 z$ a; [- o; U$ l
end
( C  F# y  d  t, x4 t! d, f' m5 a, _, Q3 ]1 {
to setup-plot2/ \6 Q" ^# {0 I9 ]5 n$ H7 z6 ]

7 ~1 u9 g. d% G- Q/ Fset-current-plot "Trends-of-global-reputation"

3 Y, e* i- J2 d% |8 N9 O% R
/ N" N; ^5 Q# I* N. n0 Pset-plot-x-range 0 xmax

- E2 z+ }, B/ V7 a3 S: ^. l  v0 \2 X0 u) }  k; Q
set-plot-y-range 0.0 ymax
4 c" x1 T9 R( S! v
end& X. q' z' P* t  u* u
6 l) d; ], z0 T! i. s& w4 Y
to setup-plot3
9 @! ?2 P) s' b/ Q1 v$ s
! Y$ f! G! |' jset-current-plot "Trends-of-credibility"
4 |3 _5 J8 \9 G* [
) S' P1 d! w( }% f" e8 K0 N3 L" F
set-plot-x-range 0 xmax

9 s! l3 g( [$ r1 d) S( m4 a" y- n7 N: m2 a2 h
set-plot-y-range 0.0 ymax

  h% ]# C" G2 i4 vend3 h' J% ^2 _) {6 s* ~" Y
- ?8 n+ p6 I* v& ]
to do-plots7 z* ^6 ?  h/ r' R/ c
set-current-plot "Trends-of-Local-reputation"- u1 U' j- _. b7 [5 k% a
set-current-plot-pen "Honest service": G" t7 N, F$ h5 c. J2 L
end' ~& h' \/ P  u

2 g2 i" t# c; T2 {[ 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.$ t( t8 l  ^6 h$ d# ^

7 _) @; ]& |: b+ o  k$ \这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

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

运行不了

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